Conveners
Cosmic Rays
- Ivan De Mitri (GSSI & INFN)
Cosmic Rays
- Roberto Aloisio (INFN)
Cosmic Rays
- Miguel Mostafa (Penn State Univ.)
Cosmic Rays
- Stephane Coutu (Penn State University)
Cosmic Rays
- There are no conveners in this block
The Pierre Auger Observatory has been detecting ultra-high energy cosmic rays (UHECRs) for more than fifteen years. An essential feature of the Observatory is its hybrid design: cosmic rays above 1017eV are detected through the observation of the associated air showers with different and complementary techniques, from surface detector arrays and fluorescence telescopes to radio antennas. The...
Operating since 2004, the Pierre Auger Observatory has yielded several important results. The suppression of the flux around 5x1019 eV is now confirmed without any doubt, a large-scale dipole anisotropy has been found for energies above 8x1018 eV, as well as an indication for some intermediate-scale anisotropy at the highest energies. Furthermore, strong limits have been placed on...
The Telescope Array is a hybrid cosmic ray detector utilizing both batteries of fluorescence telescopes and a large array of scintillator surface detectors to measure the properties of extensive air showers initiated by ultra high energy cosmic rays when they enter the Earth's atmosphere. Located in central Utah, USA, the Telescope Array is the largest cosmic ray detector in the northern...
Despite intense observational efforts and a series of important results in the last two decades, the study of ultra-high-energy cosmic rays (UHECRs) remains one of the most challenging in astronomy both because their flux is extremely low (one particle per m2 per billion year at the highest known energies) and because their macroscopic energies (tens of Joules) still do not provide large...
Mini-EUSO is a telescope observing the Earth from the International Space Station since 2019. The instrument employs a Fresnel-lens optical system and a focal surface composed of 36 Multi-Anode Photomultiplier tubes, 64 channels each, for a total of 2304 channels with single photon counting sensitivity. Mini-EUSO also contains two ancillary cameras to complement measurements in the near...
NUSES is a new space mission aiming to test innovative observational and
technological approaches related to the study of cosmic rays, high energy astrophysical neutrinos, Sun-Earth environment, Space weather
and magnetosphere-ionosphere-lithosphere coupling (MILC). The satellite
will host two payloads, named TERZINA and ZIRE’. ZIRE’ will perform
measurements of electrons, protons and...
In recent times, there has been an increasing awareness of the importance of open science, i.e., of making scientific data public, to allow scientists other than those that took them to verify the results obtained, or carry out new analyses. As an example of such awareness, the European Commission nowadays requires beneficiaries of its funding not only to make publications available in open...
Interactions of ultra-high energy cosmic rays (UHECRs) accelerated in specific astrophysical environments have been shown to shape the energy production rate of nuclei differently from that of the secondary neutrons escaping from the confinement zone. Here, we aim at testing a generic scenario of in-source interactions through a phenomenological modeling of the flux and composition of UHECRs....
The recent Ultra High Energy Cosmic Ray (UHECR) dipole anisotropy found by AUGER at EeVs energies, requires an explanation.
In analogy to the dipole Cosmic Black Body Radiation or other expected cosmic anisotropy one would like to understand the large UHECR dipole at EeV energy by a cosmic (bending, cosmic local clustering, Doppler shift) mechanism.
However there is not such a tuned...
In the last decade several detectors have been placed in Near Earth Orbit to measure the cosmic rays fluxes. This large set of accurate measurement changed the landscape of the knowledge about charged radiation from space.
I will give a review of these measurements underling the new information and the challenges in these measurements.
The Alpha Magnetic Spectrometer, AMS-02, is a magnetic spectrometer detector operating on the International Space Station (ISS) since May the 19th, 2011. More than 200 billion events have been collected by the instrument in the first 11 years of data taking, providing detailed and novel insights on the composition and energy spectra of cosmic rays up to TeV energies. This contribution reviews...
Cosmic Rays (CR) inside the Heliosphere interact with the solar wind and with the interplanetary magnetic field, resulting in a temporal variation of the cosmic ray intensity near Earth for rigidities up to few tens of GV. This variation is known as Solar Modulation. Previous AMS results on proton and helium spectra showed how the two fluxes behave differently in time. To better understand...
When traveling inside the heliosphere, cosmic rays are influenced by magnetic turbulence and solar wind disturbances, which result in the so-called solar modulation effect. Understanding solar modulation is essential for studying the origin and the propagation processes of Galactic cosmic rays, as well as for establishing of predictive models of energetic radiation in space. In this talk, we...
The space-based DAMPE (DArk Matter Particle Explorer) particle detector has been taking data for more than 6 years since its successful launch in December 2015. Its main scientific goals include the indirect search of Dark Matter signatures in the cosmic lepton spectra, the study of Galactic Cosmic Rays up to energies of hundreds of TeV and high-energy gamma ray astronomy. This talk will focus...
CSES (China Seismo-Electromagnetic Satellite) is a sophisticated multi-channel space observatory. It was launched on the 2nd of February 2018, and it is now flying on a Sun-Synchronous orbit at an altitude of ~500 km.
The High Energy Particle Detector (HEPD-01) is one of the main contributions of the CSES-Limadou collaboration to the mission and it is optimized to detect charged particles:...
The High-Energy Particle Detector (HEPD) is one of the payloads on board of CSES01, the China Seismo-Electromagnetic Satellite dedicated to monitoring perturbations of electromagnetic fields, plasma and charged particle fluxes induced by natural sources and artificial emitters in the near-Earth space. It is a light and compact payload suitable for measuring electrons (3-100 MeV), protons...
The General Antiparticle Spectrometer (GAPS) is specifically designed to
identify low-energy (<0.25 GeV/n) cosmic antinuclei, in particular antideuterons,
as a signature of dark matter annihilation or decay. This low energy channel is very
promising since beyond-the-Standard Model physics predicts a signal from dark matter that is several orders of magnitude higher than the antideuteron...
Recent instruments deployed in space or on stratospheric balloons are targeted at the study of a variety of energetic cosmic particles, including protons and nuclei, electrons, antimatter particles, secondary nuclei (including isotopes), ultraheavy nuclei, all complementing gamma-ray studies. Thus a new wealth of data is providing fresh insights on high-energy phenomena in the Galaxy. The...
HERD (High Energy Radiation Detector) is a future experiment for space-based detection of cosmic rays and gamma ray astronomy onboard the Chinese Space Station. Its most innovative feature will be the events collection from 5 sides, hence having a one order of magnitude jump in acceptance with respect to current largest calorimetric experiments. This will make it possible to investigate cosmic...
Hybrid pixel detectors (HPD) of Timepix [1,2] technology have become increasingly interesting for space applications. While up to date, common space radiation monitors rely on silicon diodes, achieving particle (mainly electron and proton) separation by pulse-height analysis, detector stacking, shielding or electron removal by a magnetic field, the key advantage of HPDs is that, in addition to...
The knee feature in the cosmic ray energy spectrum has experienced investigations by many experiments, and widely considered as a transition region from galactic to extra-galactic sources. However, a clear dependence on the direction of cosmic ray and the hadronic interaction model is observed. Therefore, a solid understanding of the angular distribution at these energies is requested to have...
The creation of anti-nuclei in the Galaxy has been has been discussed as a possible signal of exotic production mechanisms such as primordial black hole evaporation or dark matter decay/annihilation in addition to the more conventional production from cosmic-ray (CR) interactions with the gas in the interstellar medium. Excitingly, other astrophysical excesses that have been correlated with...
