Seminari 2025
from
Wednesday 1 January 2025 (09:00)
to
Wednesday 31 December 2025 (11:00)
Monday 30 December 2024
Tuesday 31 December 2024
Wednesday 1 January 2025
Thursday 2 January 2025
Friday 3 January 2025
Saturday 4 January 2025
Sunday 5 January 2025
Monday 6 January 2025
Tuesday 7 January 2025
Wednesday 8 January 2025
11:00
Spider-inspired sustainable materials and structure
-
Gabriele Greco
(
Marie-Sklodowska Curie post-doctoral researcher at the Swedish University of Agricultural Science
)
Spider-inspired sustainable materials and structure
Gabriele Greco
(
Marie-Sklodowska Curie post-doctoral researcher at the Swedish University of Agricultural Science
)
11:00 - 12:00
Room: 412 C
Spiders often evoke fear and disgust, yet their silks and webs inspire awe and fascination, capturing human curiosity throughout history. From sparking the interest of ancient philosophers to influencing practical innovations, spider silk has long been intertwined with our cultural and scientific evolution. Nature has perfected spider silk to be produced under environmentally friendly conditions, while also boasting exceptional mechanical and biological properties. For these reasons, spider silks have been extensively studied in recent decades, particularly for their potential applications in fields such as biomedical technology, the textile industry, and soft electronics. One of the most intriguing aspects of spider silk is its remarkable versatility: spiders are able to produce different types of silk to construct complex, synergistic structures. Each silk type has unique material properties that work together to enhance the overall performance of these structures. This diversity in silk types and structural functions opens up vast scientific possibilities, making the study of spider silk an area of endless potential. This seminar will explore our latest discoveries regarding spider silk, including its applications and the progress we've made in achieving scalable, eco-friendly artificial production methods that meet industrial demands.
Thursday 9 January 2025
Friday 10 January 2025
Saturday 11 January 2025
Sunday 12 January 2025
Monday 13 January 2025
Tuesday 14 January 2025
Wednesday 15 January 2025
Thursday 16 January 2025
Friday 17 January 2025
Saturday 18 January 2025
Sunday 19 January 2025
Monday 20 January 2025
Tuesday 21 January 2025
Wednesday 22 January 2025
Thursday 23 January 2025
Friday 24 January 2025
Saturday 25 January 2025
Sunday 26 January 2025
Monday 27 January 2025
Tuesday 28 January 2025
Wednesday 29 January 2025
Thursday 30 January 2025
Friday 31 January 2025
Saturday 1 February 2025
Sunday 2 February 2025
Monday 3 February 2025
Tuesday 4 February 2025
Wednesday 5 February 2025
15:00
Surfing the universe: dall'astronomia antica alle onde gravitazionali
-
Marco Drago
(
Istituto Nazionale di Fisica Nucleare
)
Surfing the universe: dall'astronomia antica alle onde gravitazionali
Marco Drago
(
Istituto Nazionale di Fisica Nucleare
)
15:00 - 16:00
Room: 412 C
Fin dall'antichità l'osservazione delle stelle e lo studio dell'universo ha affascinato l'umanità. Il progresso della scienza ci ha portato a conoscere meglio i componenti dell'universo, fino a scoprire altri messaggeri oltre alla luce, come i neutrini e le onde gravitazionali. Ripercorreremo la storia delle onde gravitazionali, dalla relatività di Einstein a inizio 1900 fino alla recente rivelazione un secolo dopo.
Thursday 6 February 2025
Friday 7 February 2025
Saturday 8 February 2025
Sunday 9 February 2025
Monday 10 February 2025
Tuesday 11 February 2025
Wednesday 12 February 2025
Thursday 13 February 2025
Friday 14 February 2025
Saturday 15 February 2025
Sunday 16 February 2025
Monday 17 February 2025
Tuesday 18 February 2025
11:00
Machine learning and AI: How can it benefit natural sciences?
-
Donatella Puglisi
(
Università di Linkoping (Svezia)
)
Machine learning and AI: How can it benefit natural sciences?
Donatella Puglisi
(
Università di Linkoping (Svezia)
)
11:00 - 12:00
Room: 412 C
This talk explores the transformative role of machine learning (ML) and artificial intelligence (AI) in advancing modern science and technology, as confirmed by the Nobel Prize in Physics 2024. During my presentation, I will give a brief introduction to AI and ML, highlighting how these technologies may benefit innovative, interdisciplinary, and application-oriented research, with focus on gas sensor technologies. I will provide numbers to show the economic profits around the massive market adoption of such technologies, although it is extremely fragmented due to lack of standardization, unsatisfactory data reliability, and the need to find innovative solutions to improve sensor performance and overcome existing limitations. To facilitate understanding and support my arguments, I will suggest practical examples and case studies on the promising use of ML-enhanced gas sensor technologies in different real-world applications, such as early cancer diagnostics, forensics, food quality, and cultural heritage preservation. I will share the challenges encountered, the solutions proposed, and the results achieved. I will conclude with reflections on future perspectives and next steps.
Wednesday 19 February 2025
Thursday 20 February 2025
Friday 21 February 2025
Saturday 22 February 2025
Sunday 23 February 2025
Monday 24 February 2025
Tuesday 25 February 2025
Wednesday 26 February 2025
Thursday 27 February 2025
Friday 28 February 2025
Saturday 1 March 2025
Sunday 2 March 2025
Monday 3 March 2025
Tuesday 4 March 2025
Wednesday 5 March 2025
Thursday 6 March 2025
Friday 7 March 2025
Saturday 8 March 2025
Sunday 9 March 2025
Monday 10 March 2025
Tuesday 11 March 2025
Wednesday 12 March 2025
Thursday 13 March 2025
Friday 14 March 2025
Saturday 15 March 2025
Sunday 16 March 2025
Monday 17 March 2025
Tuesday 18 March 2025
Wednesday 19 March 2025
Thursday 20 March 2025
Friday 21 March 2025
15:00
Observing the Universe by looking at matter at the scale of 10^-20 m
-
Marco Bazzan
(
Istituto Nazionale di Fisica Nucleare
)
Observing the Universe by looking at matter at the scale of 10^-20 m
Marco Bazzan
(
Istituto Nazionale di Fisica Nucleare
)
15:00 - 16:00
Room: 412 C
Nine years after the first gravitational wave detection, the scientific community is gearing up to develop the next generation of GW detectors that will be able to probe the visible Universe and beyond, down to the Dark Age, when stars had not yet been born. To achieve this goal requires a huge effort to improve the performance of all detector subsystems. The seminar will focus on reducing thermal noise that limits the detector in the frequency band where it is most sensitive. Reducing the dissipation processes within the materials used in the mirrors (and their suspensions) offers the possibility of acquiring unique information about black holes and neutron stars on the other side of the Universe. The status of materials research for the Virgo and LIGO detectors and the prospects for future detectors, such as the Einstein Telescope and the Cosmic Explorer, will be explained. Finally the novel CoMET (Coating Materials for Einstein Telescope) laboratory that is being built under the umbrella of the PNRR - ETIC project will be presented.
Saturday 22 March 2025
Sunday 23 March 2025
Monday 24 March 2025
Tuesday 25 March 2025
Wednesday 26 March 2025
Thursday 27 March 2025
Friday 28 March 2025
Saturday 29 March 2025
Sunday 30 March 2025
Monday 31 March 2025
Tuesday 1 April 2025
Wednesday 2 April 2025
Thursday 3 April 2025
14:15
Multi-modal x-ray imaging based on micro-radian scatter: development and applications
-
Alessandro Olivo
(
Dept. of Medical Physics & Biomedical Engineering, University College London
)
Multi-modal x-ray imaging based on micro-radian scatter: development and applications
Alessandro Olivo
(
Dept. of Medical Physics & Biomedical Engineering, University College London
)
14:15 - 15:15
Room: 412 C
X-Ray imaging is 130 years old. However, despite significant innovation in detector development and CT scanners, the underpinning physical principle has not changed since Röntgen’s discovery: features are detected based on their x-ray attenuation difference against the background they’re immersed in. This is the key limitation of x-ray imaging and e.g. the reason why it is considered to have “limited soft tissue sensitivity”, an area where MRI is used instead. The same limitation affects many other application areas, in a sense defining where x-rays can and cannot be used. However, all x-rays undergo very tiny (microradian) deviations upon traversing a sample, the only exception being those extremely rare samples that are completely homogeneous on the microscopic scale. Conventional x-ray imaging systems are insensitive to this phenomenon: x-rays that have deviated by a few microradians are simply considered “primaries”, i.e. x-rays that have not interacted with the sample. Instead, if properly analysed, these “micro-deviated” x-rays can reveal a lot of information on the sample they have traversed. This allows the detection of features classically considered “x-ray invisible”, redefining x-rays’ areas of applicability. In this seminar, I will discuss how lab systems can be built that are sensitive to these microscopic deviations and present a series of applications in medicine, security, biology and materials science.
16:00
The LHCb RICH detectors upgrade: from prototyping to operations
-
Giovanni Cavallero
(
Istituto Nazionale di Fisica Nucleare
)
The LHCb RICH detectors upgrade: from prototyping to operations
Giovanni Cavallero
(
Istituto Nazionale di Fisica Nucleare
)
16:00 - 17:00
Room: 412 C
During the second LHC long shutdown, the LHCb experiment underwent a major upgrade in order to be able to operate at the instantaneous luminosity of 2 × 10^33 cm^−2 s^−1, reading data at the full LHC bunch crossing rate. The RICH system of LHCb has been completely refurbished installing new photon detectors (Multi-anode Photomultiplier Tubes) equipped with a custom developed readout chain. In order to reduce the unprecedented peak occupancy, the full optics and mechanics of the RICH1 detector has been re-designed to distribute the Cherenkov photons over a larger surface of the photon detectors planes. In this seminar, the overview of the RICH upgrade programme is described including the design, construction, commissioning and operations phase. The validation of the new detectors and the performance obtained in the first years of physics production is presented. A summary of the possible evolutions of the RICH system is also given.
Friday 4 April 2025
Saturday 5 April 2025
Sunday 6 April 2025
Monday 7 April 2025
Tuesday 8 April 2025
Wednesday 9 April 2025
Thursday 10 April 2025
16:00
In the quest of the nature of Light-by-light scattering
-
Pavel Jucha
(
Krakow and Ferrara Universities
)
In the quest of the nature of Light-by-light scattering
Pavel Jucha
(
Krakow and Ferrara Universities
)
16:00 - 17:00
Room: 412 C
With the development of quantum physics, scientists realized that light quanta should interact with each other. This realization led to calculating the theoretical cross section value for this process in the 1930s, which laid the groundwork for quantum field theory [1]. Almost 90 years later, we found the experimental evidence of light-by-light scattering [2]. The strong electromagnetic fields interacting in ultraperipheral heavy-ion collisions (UPC) allow us to observe such subtle processes. However, the story has not ended yet. The contemporary detectors measure cross section with the high di-photon mass and photon transverse momentum threshold. Beyond these limits, we expect more events of light-by-light scattering. In the low-pt region, we also await observation of different scattering mechanisms: light meson resonances and photon scattering described by VDM-Regge theory [3]. During my talk, I will explain the theoretical background of UPC and the mechanisms of light-by- light scattering. I will compare the theoretical results with data obtained by ATLAS [4] and CMS [5] experiments since the discovery report in 2017. I will also show the predictions for future measurement possible due to ALICE detector upgrades planned for the 2030s [6]. [1] K. Scharnhorst, arXiv:1711.05194 (2023). [2] ATLAS Collaboration (M. Aaboud et al.), Nature Phys., 13852 (2017). [3] P. Jucha, M. Kłusek-Gawenda, A. Szczurek, Phys. Rev. D, 109, 014004 (2024). [4] ATLAS Collaboration (G. Aad et al.), Phys. Rev. Lett., 123(5):052001 (2019). [5] CMS Collaboration (A. M. Sirunyan), Phys. Lett. B, 797:134826 (2019). [6] ALICE Collaboration, CERN-LHCC-2022-009, LHCC-I-038, arXiv:2211.02491 (2022).
Friday 11 April 2025
Saturday 12 April 2025
Sunday 13 April 2025
Monday 14 April 2025
Tuesday 15 April 2025
11:30
Inflation in metric-affine gravity
-
Antonio Racioppi
Inflation in metric-affine gravity
Antonio Racioppi
11:30 - 12:30
Room: 412 C
Metric-affine gravity provides an interesting alternative to Einstein's General Relativity and a powerful tool for building successful inflationary models. In such a framework, the metric tensor and the affine connection are independent dynamical quantities. We consider here the metric-affine theories containing only the minimal degrees of freedom in the inflationary sector, i.e. the massless graviton and the inflaton. This theory contains the Ricci-like and parity-odd Holst invariants together with non-minimal couplings between the inflaton and the above-mentioned invariants. We show how the aforementioned setup can be used to generate a new class of inflationary attractors or to rescue previously ruled models like natural inflation and symmetry breaking inflation.
14:30
The Enrichment of Naturally Occurring Radioactive Materials (NORM) and Heavy Metals in the Terrestrial Environment
-
Banu Yoho
(
Ege University, Institute of Nuclear Sciences (Izmir, Turkey)
)
The Enrichment of Naturally Occurring Radioactive Materials (NORM) and Heavy Metals in the Terrestrial Environment
Banu Yoho
(
Ege University, Institute of Nuclear Sciences (Izmir, Turkey)
)
14:30 - 15:30
Room: 412 C
The measurement of natural radioactivity in the environment from naturally occurring radioactive material (NORM) is significant for evaluating the radiological impact of non-nuclear industrial activities. Industries dealing with raw materials containing various concentrations of naturally occurring radionuclides often produce large amounts of waste. Coal-fired power plants are widely used worldwide to generate electricity. Coal, residues, and waste produced by combustion contain naturally occurring radionuclides such as 238U, 226Ra, 232Th, and 40K and heavy metals such as Cd, Cr, Pb, Ni, and Zn. These radionuclides and heavy metals become enriched in ash fractions during combustion. During high-temperature processes in the furnace, volatile and semi-volatile elements and radionuclides are partially emitted to the environment, resulting in the redistribution of these elements, especially in the surface soil around coal-fired power plants. Metal pollution, which is one of the most important environmental problems for many parts of the world, can enter the food chain, affect the entire ecosystem and pose a risk for human health. Another major industrial waste product is bauxite residue (red mud), a residue from the Bayer process used in alumina (Al2O3) production from bauxite. The residues contain naturally occurring radionuclides such as 238U, 232Th and 40K and toxic elements such as Al, Cr, Co, Mn and Ni. Due to its high alkalinity and the significant amount of radioactive elements and rare-earth elements (REEs) contents, red mud should be evaluated as an environmental problem. On the other hand, these waste materials may potentially be used as an industrial by-product. When re-using these residues, it is of importance to evaluate the radioactive and toxic elements, chemical composition, and the leaching features of these materials. This study explores the enrichment and redistribution of NORM and heavy metals in industrial waste materials, highlighting their environmental impact and potential pathways for sustainable management
Wednesday 16 April 2025
14:30
Understanding micro- and nanoplastic dynamics in aquatic ecosystems through nuclear medicine: radiolabelling and imaging (PET)
-
Micheal Duncan Yoho
(
Ege University, Institute of Nuclear Sciences (Izmir, Turkey)
)
Understanding micro- and nanoplastic dynamics in aquatic ecosystems through nuclear medicine: radiolabelling and imaging (PET)
Micheal Duncan Yoho
(
Ege University, Institute of Nuclear Sciences (Izmir, Turkey)
)
14:30 - 15:30
Room: 412 C
Currently, ten million tons of plastic waste has entered the Earth’s oceans and seas. Plastic waste generation is expected to triple by 2050. These plastics break down in the ocean into smaller micro-sized particles. Increasing amounts of microplastics pose a significant threat to the global food supply. For example, microplastics impair reproduction in oysters and fish, disrupt weight gain, and cause liver disease. Organisms that feed by filtering large volumes of water, such as sardines, anchovies, and mussels, acquire microplastics at higher rates. This is especially relevant to Mediterranean countries, where a significant amount of the seafood diet consists of sardines and anchovies. To predict the future impact on the world seafood supply, realistic and rigorous microplastic uptake and biotoxicity studies are needed. However, the state-of-the-art method of fluorescent dye labeling is criticized due to potential leakage, contamination, low sensitivity, and requiring the use of unrealistic amounts of microplastics. We will report on efforts to use highly sensitive radiolabeling, common in nuclear medicine, to reduce the amount of microplastics needed in uptake and biotoxicity studies. This is achieved by the low noise present in radiation measurements, large penetration depth of the high-energy signals, and high efficiency. Strong covalent bonding mitigates leakage concerns. Results will be presented from in-vivo studies involving sardines, anchovies, tillapia, and plankton. Quantitative analysis and imaging are conducted non- destructively by pre-clinical positron-emission-tomography (PET). Additionally, destructive analysis is conducted by biodistribution. The associated detection limits will assess method performance.
Thursday 17 April 2025
Friday 18 April 2025
Saturday 19 April 2025
Sunday 20 April 2025
Monday 21 April 2025
Tuesday 22 April 2025
Wednesday 23 April 2025
Thursday 24 April 2025
Friday 25 April 2025
Saturday 26 April 2025
Sunday 27 April 2025
Monday 28 April 2025
Tuesday 29 April 2025
Wednesday 30 April 2025
Thursday 1 May 2025
Friday 2 May 2025
Saturday 3 May 2025
Sunday 4 May 2025
Monday 5 May 2025
Tuesday 6 May 2025
Wednesday 7 May 2025
15:00
Searching for Light Dark Matter with the NA64/POKER experiment at CERN
-
Andrea Celentano
(
Istituto Nazionale di Fisica Nucleare
)
Searching for Light Dark Matter with the NA64/POKER experiment at CERN
Andrea Celentano
(
Istituto Nazionale di Fisica Nucleare
)
15:00 - 16:00
Room: 412 C
One of the most compelling arguments motivating the search for physics beyond the Standard Model (SM) is the need to explain the nature of Dark Matter (DM). Despite an extensive experimental program that combined direct, indirect, and detection at colliders, to date, no conclusive results about DM particle nature have been determined. Among the DM theories, DM particles in the mass range 1 MeV - 1000 MeV (also called Light Dark Matter or LDM) represent a theoretically wellgrounded option if a new DM-SM interaction mechanism is introduced. A simple model introduces a new vector boson, the dark photon (A'), kinetically mixed with the SM photon and coupled to DM. The A' can be produced in interactions of charged particles with matter and decay into LDM pairs. The NA64 experiment at CERN uses a 100 GeV electron beam hitting an active target (ECAL) to search for missing-energy events. With 10×10¹² electrons on target, no events with missing energy above 50 GeV were observed, allowing NA64 to set leading limits on LDM scenarios. A positron-based missing-energy search has also been proposed in the POKER (Positron Resonant Annihilation into Dark Matter) project. Using a positron beam enhances LDM production through electron-positron annihilation and provides a clean signal dependent only on the A' mass. Successful tests at 100 GeV and 70 GeV have validated this technique, paving the way for a high-statistics positron program after LS3
Thursday 8 May 2025
Friday 9 May 2025
Saturday 10 May 2025
Sunday 11 May 2025
Monday 12 May 2025
Tuesday 13 May 2025
11:00
Half-wave plates in CMB experiments: some pros and cons
-
Marta Monelli
(
Kavli IPMU, Kashiwa, Japan
)
Half-wave plates in CMB experiments: some pros and cons
Marta Monelli
(
Kavli IPMU, Kashiwa, Japan
)
11:00 - 12:00
Room: 412 C
Rapidly rotating half-wave plates (HWPs) are becoming a popular choice of polarization modulators in cosmic microwave background (CMB) experiments. They play a crucial role in mitigating 1/f noise and reducing intensity-to-polarization leakage, both of which are beneficial for high-precision polarization measurements. However, HWPs inevitably exhibit non-idealities that can introduce additional systematic effects, potentially impacting the extraction of cosmological parameters. In this talk, I will provide an overview of the key components of a CMB experiment, from data acquisition to analysis, and discuss the advantages of ideal HWPs. I will then explore the impact of HWP non-idealities on critical measurements, such as the tensor-to-scalar ratio and cosmic birefringence angle, highlighting challenges and potential mitigation strategies.
Wednesday 14 May 2025
Thursday 15 May 2025
Friday 16 May 2025
Saturday 17 May 2025
Sunday 18 May 2025
Monday 19 May 2025
Tuesday 20 May 2025
Wednesday 21 May 2025
Thursday 22 May 2025
15:00
BULLKID-DM: searching for light WIMPs with monolithic detector arrays
-
Marco Vignati
(
Istituto Nazionale di Fisica Nucleare
)
BULLKID-DM: searching for light WIMPs with monolithic detector arrays
Marco Vignati
(
Istituto Nazionale di Fisica Nucleare
)
15:00 - 16:00
Room: 412 C
BULLKID-DM is a novel experimental effort in the field of dark matter detection, aimed at searching for hypothetical WIMP-like particles with a mass around 1 GeV/c² and a nucleon cross-section below 10⁻⁴¹ cm². The detector will feature an 800 g target composed of 2,500 silicon dice, instrumented with phonon-mediated kinetic inductance detectors. Compared to other solid-state experiments in the field, BULLKID-DM seeks to achieve superior background rejection by constructing a fully active detector volume and employing fiducialization techniques. The experiment is planned to be installed in Italy at the Gran Sasso National Laboratory (LNGS). In this seminar we present results from a 60 g demonstrator array comprising 180 silicon dice, provide an update on the construction status of the full experiment, and discuss the projected dark matter sensitivity.
Friday 23 May 2025
Saturday 24 May 2025
Sunday 25 May 2025
Monday 26 May 2025
15:00
Mapping inflationary loop corrections to boundary terms
-
Laura Iacconi
(
Queen Mary University of London
)
Mapping inflationary loop corrections to boundary terms
Laura Iacconi
(
Queen Mary University of London
)
15:00 - 16:00
Room: 412 C
Both single- and multi-field models of inflation might lead to enhanced scalar fluctuations on scales much smaller than those seeding the large-scale structure formation. In these scenarios, it is possible that the spike of power at high wavenumber might induce large corrections to the scalar power spectrum, e.g. in the form of loop corrections, potentially endangering the perturbativity of the underlying models. In this talk we discuss recent developments in the calculation of the 1-loop correction to a large-scale adiabatic mode. We demonstrate that non-volume-suppressed corrections only contribute at the boundaries of the momentum integral. To achieve this we employ expansion methods, such as the δN formalism, as well as more general expansions that do not rely on assumption of validity of the separate universe picture.
Tuesday 27 May 2025
Wednesday 28 May 2025
Thursday 29 May 2025
Friday 30 May 2025
Saturday 31 May 2025
Sunday 1 June 2025
Monday 2 June 2025
Tuesday 3 June 2025
Wednesday 4 June 2025
Thursday 5 June 2025
Friday 6 June 2025
11:30
CMB Constraints on Non-Minimally Coupled Ultralight Dark Matter
-
Kimberly Boody
(
University of Texas at Austin
)
CMB Constraints on Non-Minimally Coupled Ultralight Dark Matter
Kimberly Boody
(
University of Texas at Austin
)
11:30 - 12:30
Room: 412 C
The presence of ultralight dark matter in the early Universe suppresses small-scale structure formation. Moreover, if it couples to the Standard Model, it can induce a variation of fundamental constants. In this talk, I will discuss the cosmological impact of an ultralight dark matter field with an effective quadratic coupling to the Standard Model, such that the fine structure constant and the mass of the electron have time-dependent, oscillatory variations. I will present CMB constraints on this scenario for a wide range of dark matter masses, associated with the oscillations occurring around BBN and the formation of the CMB. C400 and zoom: https://infn-it.zoom.us/j/7834744241?pwd=sZWiNugyHbn26MP0fpe7SRdnGAgdMD.1
Saturday 7 June 2025
Sunday 8 June 2025
Monday 9 June 2025
Tuesday 10 June 2025
Wednesday 11 June 2025
11:00
Advances in Modeling Binary Neutron Star Mergers
-
Carlo Musolino
(
Frankfurt University
)
Advances in Modeling Binary Neutron Star Mergers
Carlo Musolino
(
Frankfurt University
)
11:00 - 12:00
Room: 412 C
Binary neutron star (BNS) mergers are among the most energetic events in the universe, and have emerged as key targets in multimessenger astrophysics. They are associated with short gamma-ray bursts and kilonovae, and are believed to be primary sites for the synthesis of heavy elements via the r-process. Modeling these events accurately requires capturing the interplay of gravitational, electromagnetic, strong, and weak interactions, making BNS mergers an exceptional laboratory for extreme physics. In this talk, I will present recent progress in the modeling of neutrino transport in BNS mergers, and explore how weak interactions may leave observable imprints on electromagnetic counterparts. I will also highlight new numerical techniques that promise to improve the accuracy and predictive power of future simulations. **ROOM B200**
Thursday 12 June 2025
Friday 13 June 2025
Saturday 14 June 2025
Sunday 15 June 2025
Monday 16 June 2025
Tuesday 17 June 2025
Wednesday 18 June 2025
Thursday 19 June 2025
Friday 20 June 2025
Saturday 21 June 2025
Sunday 22 June 2025
Monday 23 June 2025
Tuesday 24 June 2025
Wednesday 25 June 2025
Thursday 26 June 2025
Friday 27 June 2025
Saturday 28 June 2025
Sunday 29 June 2025
Monday 30 June 2025
Tuesday 1 July 2025
Wednesday 2 July 2025
Thursday 3 July 2025
Friday 4 July 2025
Saturday 5 July 2025
Sunday 6 July 2025
Monday 7 July 2025
Tuesday 8 July 2025
Wednesday 9 July 2025
Thursday 10 July 2025
Friday 11 July 2025
Saturday 12 July 2025
Sunday 13 July 2025
Monday 14 July 2025
14:00
Probing the Universe’s expansion with multi-messenger astronomy
-
Antonella Palmese
(
University of California, Berkeley
)
Probing the Universe’s expansion with multi-messenger astronomy
Antonella Palmese
(
University of California, Berkeley
)
14:00 - 15:00
Room: 412 C
Thanks to the synergies between gravitational wave (GW) experiments, such as LIGO/Virgo/KAGRA, and electromagnetic observations of transients and galaxies, a variety of novel cosmological measurements has recently become possible. Several of these measurements rely on the use of GW events as "standard sirens”. Following the detection of the first electromagnetic counterpart to a GW event, GW170817, the first “bright” standard siren measurement has been performed. We continue searching for optical counterparts to enable more bright siren analyses with the Gravitational Wave Multi-Messenger Astronomy DECam Survey (GW-MMADS), for which I will describe our recent results. Standard siren measurements for “dark" events, i.e. without a confirmed electromagnetic counterpart, can also be performed, using cross-correlations with galaxy or Active Galactic Nuclei catalogs. In this talk I will show our latest standard siren measurements and forecasts, and present expectations for multi-messenger detections in the upcoming years. Zoom: https://infn-it.zoom.us/j/7834744241?pwd=sZWiNugyHbn26MP0fpe7SRdnGAgdMD.1
Tuesday 15 July 2025
Wednesday 16 July 2025
Thursday 17 July 2025
Friday 18 July 2025
Saturday 19 July 2025
Sunday 20 July 2025
Monday 21 July 2025
Tuesday 22 July 2025
Wednesday 23 July 2025
Thursday 24 July 2025
Friday 25 July 2025
Saturday 26 July 2025
Sunday 27 July 2025
Monday 28 July 2025
Tuesday 29 July 2025
Wednesday 30 July 2025
Thursday 31 July 2025
Friday 1 August 2025
Saturday 2 August 2025
Sunday 3 August 2025
Monday 4 August 2025
Tuesday 5 August 2025
Wednesday 6 August 2025
Thursday 7 August 2025
Friday 8 August 2025
Saturday 9 August 2025
Sunday 10 August 2025
Monday 11 August 2025
Tuesday 12 August 2025
Wednesday 13 August 2025
Thursday 14 August 2025
Friday 15 August 2025
Saturday 16 August 2025
Sunday 17 August 2025
Monday 18 August 2025
Tuesday 19 August 2025
Wednesday 20 August 2025
Thursday 21 August 2025
Friday 22 August 2025
Saturday 23 August 2025
Sunday 24 August 2025
Monday 25 August 2025
Tuesday 26 August 2025
Wednesday 27 August 2025
Thursday 28 August 2025
Friday 29 August 2025
Saturday 30 August 2025
Sunday 31 August 2025
Monday 1 September 2025
Tuesday 2 September 2025
Wednesday 3 September 2025
Thursday 4 September 2025
Friday 5 September 2025
Saturday 6 September 2025
Sunday 7 September 2025
Monday 8 September 2025
Tuesday 9 September 2025
Wednesday 10 September 2025
Thursday 11 September 2025
Friday 12 September 2025
Saturday 13 September 2025
Sunday 14 September 2025
Monday 15 September 2025
Tuesday 16 September 2025
Wednesday 17 September 2025
Thursday 18 September 2025
Friday 19 September 2025
Saturday 20 September 2025
Sunday 21 September 2025
Monday 22 September 2025
Tuesday 23 September 2025
Wednesday 24 September 2025
11:00
The quest for primordial B modes and the Galactic foreground challenge
-
Arianna Rizzieri
(
University of Oxford (UK)
)
The quest for primordial B modes and the Galactic foreground challenge
Arianna Rizzieri
(
University of Oxford (UK)
)
11:00 - 12:00
Room: 412 C
Cosmology has made remarkable progress in recent decades, mainly thanks to high-precision measurements of cosmic microwave background (CMB) temperature anisotropies and polarization, which have led to the Standard Model of cosmology. Still, some key questions remain, including the origin of the seeds of the structures we see in the Universe today. Inflation provides an elegant explanation for this and other puzzles within the Standard Model of cosmology. However, we do not yet have direct evidence for inflation, and current and upcoming CMB experiments aim to detect primordial B modes in the CMB polarization to provide such proof. This is an exciting and challenging time, with the Simons Observatory now collecting data and the LiteBIRD satellite mission under proposal. The large amount of data from these experiments, combined with their unprecedented sensitivity, offers great potential for discoveries. At the same time, it brings data analysis challenges, among which addressing the contamination from Galactic polarized foregrounds. How well we can handle this problem will determine our ability to constrain, or possibly detect, primordial B modes. In this talk, I will introduce CMB cosmology and data analysis, with a focus on the main challenges posed by diffuse Galactic foregrounds. I will discuss both established and new techniques for subtracting these signals in the context of upcoming CMB experiments, where the task is further complicated by instrumental systematics.
Thursday 25 September 2025
Friday 26 September 2025
Saturday 27 September 2025
Sunday 28 September 2025
Monday 29 September 2025
Tuesday 30 September 2025
Wednesday 1 October 2025
Thursday 2 October 2025
Friday 3 October 2025
Saturday 4 October 2025
Sunday 5 October 2025
Monday 6 October 2025
Tuesday 7 October 2025
Wednesday 8 October 2025
16:00
Binary compact objects and stripped stars: linking electromagnetic observations and gravitational waves
-
Erika Korb
(
Università di Padova e Istituto Nazionale di Fisica Nucleare
)
Binary compact objects and stripped stars: linking electromagnetic observations and gravitational waves
Erika Korb
(
Università di Padova e Istituto Nazionale di Fisica Nucleare
)
16:00 - 17:00
Room: 412 C
Over the last ten years, gravitational wave detectors have proven for the first time the existence of binary compact object mergers. Their formation history remains unclear, as many physical processes (e.g., mass transfer and supernovae) must be considered in their evolution; however, they still suffer from significant model uncertainties. In this talk, I will present the results of population-synthesis simulations where we characterized the impact of different assumptions (e.g., stellar physics, metallicity, mass transfer stability and efficiency, possible chemically homogeneous evolution, core-collapse supernova, and natal kick models) on the evolution of a binary population representative of the one observed in the Milky Way. We found that binaries hosting a compact object (a neutron star or black hole) and a stripped star, possibly a Wolf-Rayet star, are crucial progenitors of gravitational wave mergers. We also found that assuming efficient angular momentum losses during mass transfer events can significantly change the space of orbital configurations and type of binary compact object progenitors, allowing for the formation of merging black hole binaries close to the putative pair-instability mass gap, with stellar progenitors that could retain a large hydrogen envelope or even experience core-collapse supernova during a mass transfer event. Our findings have profound implications for our understanding of the formation channels of gravitational wave sources. They can be linked to a variety of possible electromagnetic observables, ranging from Cyg X-3, the only Wolf-Rayet-compact object candidate in the Milky Way, to supernovae and gamma-ray bursts.
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