Half a Century of Blazars and Beyond

10 Jun 2018, 08:00 → 15 Jun 2018, 18:30 Europe/Rome

Aula Darwin (Torino - Italy)

 

Blazars are exemplary systems in which to study relativistic jet processes and connections to accretion onto super-massive black holes. Over half a century ago, studies began recognizing blazars as being distinguished by their flat radio spectra, compactness, variability, and polarized radio and optical emission. Over the past decade, they have become ubiquitous in the high-energy gamma-ray and very-high energy gamma-ray skies. Importantly, blazars have an expanding role in understanding high-energy astrophysics processes and significance in multi-messenger observations, thus driving future mission endeavors.
 

The Fermi Large Area Telescope has changed the landscape, offering 1000’s of gamma-ray blazars for study, and will provide continual all-sky monitoring over the coming decade. The gamma-ray monitoring will soon be joined by sky-survey capabilities in X-rays, optical, radio, infrared, and TeV gamma-rays, bringing an unprecedentedly complete multi-wavelength picture of their population. The Event Horizon Telescope is already making its mark in directly probing the collimation region of the jet base. The coming decade will also realize the multi-messenger connection particularly with IceCube high-energy neutrinos, and the possible role of blazars in the production of ultra high energy cosmic rays is being explored. How blazars may contribute to our understanding binary supermassive black hole systems with Pulsar Timing Arrays and in the LISA-era is ripe for study.

This conference will aim to synthesize the current observational and theoretical understanding of blazars and will anticipate coming frontiers in blazar research including X-ray and gamma-ray polarimetry, MeV gamma-ray prospects with proposed missions, and prospective X-ray imaging studies. The observations anticipated will be driven by advances in understanding of particle acceleration mechanisms through simulations and theory.

The conference is motivated by the 10th anniversary of the launch of Fermi (June 11, 2008) as well as the 40th anniversary of the Pittsburgh Conference on BL Lac Objects (April, 1978), where the blazar name was famously coined by Ed Spiegel at the conference dinner. We will plan to celebrate both Fermi’s (the satellite and its namesake) and their contributions from the vantage point of blazars.

TOPICS:

• Gamma-ray linchpin: Fermi and Beyond (e-ASTROGAM and AMEGO, CTA)
• Role of X-ray and Gamma-ray polarimetry (XIPE, IXPE)
• Jet collimation on Event-Horizon Scales
• The (Enrico) Fermi connection: particle acceleration, jet launching, and simulations
• Connection to ultrahigh-energy cosmic rays and neutrinos
• Identification, population, and time-domain studies with panchromatic all-sky surveys
• Jet signatures of super-massive black hole binaries and relation to low-frequency gravitational waves

Download the Conference Poster (HD) here:
 https://agenda.infn.it/conferenceDisplay.py/getPic?picId=11&confId=14538

Sunday, 10 June

17:30 → 19:30 Welcome Cocktails

Monday, 11 June

08:45 → 08:50 Welcome - Francesco Massaro

08:50 → 09:25 Opening

08:50 Outstanding Problems in Blazar Astrophysics (Opening Lecture)

Speaker: Alan Marscher (Boston University)

Slides Marscher.pdf

09:25 → 10:15 Identification, population, and panchromatic all-sky surveys

09:25 The Devil is in the Details: Using High-Cadence, Multiwavelength Observations to Understand the Disk-Jet Connection in Blazars (Invited)

Speaker: Jedidah ISLER (Vanderbilt University)

Slides Isler.pdf

09:55 Twenty years of the Whole Earth Blazar Telescope (WEBT)

Speaker: Claudia Raiteri (INAF - OATo)

Slides Raiteri.pdf

10:15 → 10:45 Coffee Break

10:45 → 12:25 Identification, population, and panchromatic all-sky surveys

10:45 The Extraordinary Flare of CTA 102 in 2016 - 2017

Speaker: Markus BOETTCHER (North-West University)

Slides Boettcher.pdf

11:05 Quasi-simultaneous decade-long optical and gamma-ray monitoring of selected blazars: the confrontation of the two energy ranges and its outcome

Speaker: Valeri LARIONOV ((St. Petersburg State University))

Slides Larionov.pdf

11:25 Multiwavelength studies of blazars

Speaker: Aditi AGARWAL (Indian Institute of Astrophysics)

11:45 Multi-wavelength flaring activity in bright blazars

Speaker: Ioannis LIODAKIS (KIPAC - Stanford University)

Slides Liodakis.pdf

12:05 Radio core dominance of Fermi blazars

Speaker: Zhi-yuan PEI (University of Padova)

Slides Pei.pdf

12:25 → 12:30 LOC announcements

12:30 → 14:00 Lunch Time

14:00 → 15:10 Identification, population, and panchromatic all-sky surveys

14:00 Parsec-Scale Studies of Blazar Jet Kinematics (Invited)

Speaker: Matt LISTER (Purdue University)

Slides Lister.pdf

14:30 Dramatic Multi-Wavelength Outburst of the Quasar 4C+29.45 at the End of 2017

Speaker: Svetlana JORSTAD (Boston University)

Slides Jorstad.pdf

14:50 Relationship between Gamma-Rays and the pc-scale Radio Jet in 3C 279

Speaker: Victor Manuel PATIÑO ALVAREZ (Max Planck Institute for Radio Astronomy)

15:10 → 15:40 Coffee Break

15:40 → 17:55 Gamma-ray linchpin: VHE Connections

15:40 Signatures of the extragalactic background light in gamma-rays (Fermi@10 special talk)

Speaker: Alberto DOMINGUEZ (Universidad Computense de Madrid)

16:05 TeV blazars with H.E.S.S.

Speaker: Matteo CERRUTI (CNRS - LPNHE)

Slides Cerruti.pdf

16:25 Highlights from the VERITAS Blazar Observation Program

Speaker: Wystan BENBOW (Harvard-Smithsonian Center for Astrophysics)

Slides Benbow.pdf

16:45 MAGIC blazars in a multi-wavelength context

Speaker: Elisa PRANDINI (University of Padova - INFN Padova)

Slides Prandini.pdf

17:05 Two-component jet scenarios and blazar classification

Speaker: Helene SOL (CNRS - Observatoire de Paris)

Slides Sol.pdf

17:25 Connecting Blazar Kinematics to Supermassive Black Holes: Dynamical Imaging with the Event Horizon Telescope (Invited)

Speaker: Michael JOHNSON (Harvard University)

Slides Johnson.pdf

17:55 → 18:05 LOC announcements

20:00 → 23:30 Fermi@10 Special Dinner

Address: Via durandi 13, 10144 Torino.

Web page of the restaurant: http://www.ristorantelapiazza.com/en

Tuesday, 12 June

08:45 → 10:25 Gamma-ray linchpin: Fermi (and Beyond)

08:45 The Fourth catalogue of AGN detected by Fermi-LAT (Fermi@10 Special talk)

Speaker: Dario GASPARRINI (SSDC)

Slides Gasparrini.pdf

09:10 The blazar sequence is alive (Review)

Speaker: Gabriele GHISELLINI (INAF - Osservatorio Astronomico di Brera)

Slides Ghisellini.pdf

09:45 To BLR or not to BLR ? The Fermi-LAT view

Speaker: Luigi COSTAMANTE (Italian Space Agency)

Slides Costamante.pdf

10:25 → 10:55 Coffee Break

10:55 → 12:15 Gamma-ray linchpin: Fermi (and Beyond)

10:55 High Energy flares of FSRQs: the connection with the accretion disk luminosity

Speaker: Luigi PACCIANI (IAPS-INAF)

Slides Pacciani.pdf

11:15 Chasing hidden TeV beacons in the elusive population of extreme HBLs

Speaker: Giacomo BONNOLI (University  of Siena - INFN Pisa - INAF- Bologna Astronomical Observatory)

11:35 Extreme TeV blazars as probes of the intergalactic medium: beyond the absorption-only model

Speaker: Timur DZHATDOEV (Moscow State University)

Slides Dzhatdoev.pdf

11:55 The Cherenkov Telescope Array view of extra-galactic jetted sources

Speaker: Stefano VERCELLONE (INAF - Osservatorio Astronomico di Brera)

Slides Vercellone.pdf

12:15 → 13:45 Lunch Time

13:45 → 15:05 Gamma-ray linchpin: (Fermi) and Beyond

13:45 Joint NuSTAR and Fermi observations of blazars

Speaker: Grzegorz MADEJSKI (SLAC)

Slides Madejski.pdf

14:05 X-ray Intraday Flux and Spectral Variability of TeV Blazars with NuSTAR

Speaker: Ashwani PANDEY (Aryabhatta Research Institute of Observational Sciences (ARIES))

Slides Pandey.pdf

14:25 A multi-wavelength view of the most extreme X-ray flare from Mrk 501

Speaker: Josefa BECERRA GONZÁLEZ (Instituto de Astrofisica de Canarias)

14:45 FERMI transient J1544-0649: a flaring radio-weak BL Lac

Speaker: GABRIELE BRUNI (INAF - Institute for Space Astrophysics and Planetology)

Slides Bruni.pdf

15:05 → 15:30 POSTER HAIKUS

15:30 → 16:00 Coffee Break

16:00 → 18:00 Gamma-ray linchpin: (Fermi) and Beyond

16:00 Restarting activity in the nucleus of PBC J2333.9-2343 (HERNANDEZ-GARCIA et al.)

Speaker: Francesca PANESSA (IAPS-INAF)

Slides Panessa.pdf

16:20 Jet physics of blazar-like narrow-line Seyfert 1 galaxies in the Fermi era

Speaker: Filippo D'AMMANDO (INAF-IRA Bologna)

Slides DAmmando.pdf

16:40 Collimation, acceleration and recollimation shock in the jet of gamma-ray emitting radio-loud NLS1 galaxy 1H 0323+342

Speaker: Kazuhiro HADA (National Astronomical Observatory of Japan)

Slides Hada.pdf

17:00 Gamma loud NLS1s: a low scale version of FSRQs?

Speaker: Catherine BOISSON (LUTH - Observatoire de Paris)

17:20 Spectroscopy of extragalactic gamma-ray emitters: new identification, classification and redshift

Speaker: Simona PAIANO (INAF - Padova Astronomical Observatory)

Slides Paiano.pdf

17:40 Search for AGN counterparts of unidentified Fermi-LAT sources using optical polarimetry

Speaker: Dmitry BLINOV (University of Crete)

Slides Blinov.pdf

Wednesday, 13 June

08:45 → 10:25 Role of polarimetry, including X-ray and Gamma-ray polarimetry

08:45 Magnetic fields in blazar jets (Invited)

Speaker: Talvikki HOVATTA (Tuorla Observatory)

Slides Hovatta.pdf

09:15 Delving Deeper into Blazars Cores with 3mm GMVA Polarimetric Observation

Speaker: Carolina CASADIO (Max Planck Institute for Radio Astronomy)

Slides Casadio.pdf

09:35 Scrutiny of the recollimation shock in BL Lacertae on sub parsec scales

Speaker: Tigran ARSHAKIAN (Byurakan Astrophysical Observatory)

Slides Arshakian.pdf

09:55 X-Ray and Gamma-Ray Spectropolarimetric Observations of Active Galactic Nuclei (Invited)

Speaker: Henric KRAWCZYNSKI (Washington University in St. Louis)

10:25 → 10:55 Coffee Creak

10:55 → 12:25 Role of polarimetry, including X-ray and Gamma-ray polarimetry

10:55 Polarization Monitoring of AGN at Millimeter Wavelengths with the IRAM 30m Telescope. First results and impact on blazar science

Speaker: Ivan AGUDO (Instituto de Astrofisica de Andalucia (CSIC))

Slides Agudo.pdf

11:15 Blazar physics through multi-frequency circular and linear polarization monitoring

Speaker: Ioannis MYSERLIS (Max Planck Institute for Radio Astronomy)

Slides Myserlis.pdf

11:35 Optical polarisation variability of radio loud narrow line Seyfert 1 galaxies

Speaker: Emmanouil ANGELAKIS (Max Planck Institute for Radio Astronomy)

Slides Angelakis.pdf

11:55 Fermi, Astrophysics and ISM (Invited)

Speaker: Steven Shore (University of Pisa)

Slides Shore_Fermi-2011-Rome.pdf

Thursday, 14 June

08:45 → 10:30 The (Enrico) Fermi connection: particle acceleration, simulations, and theory

08:45 Dissipation and Particle Acceleration in Blazar Jets (Review)

Speaker: Mitch BEGELMAN (University of Colorado, Boulder)

Slides Begelman.pdf

09:20 Extragalactic Jet Dynamics after Half a Century of MHD modelling. Where are we? (Invited)

Speaker: Andrea MIGNONE (UniTO)

09:50 Reconnection and Associated Flares in Global Relativistic Jets Containing Helical Magnetic Fields with PIC Simulations

Speaker: Kenichi NISHIKAWA (Univeristy of Alabama in Huntsville)

Slides Nishikawa.pdf

10:10 Total and linearly polarized synchrotron emission from overpressured magnetized relativistic jets

Speaker: Antonio FUENTES (Instituto de Astrofisica de Andalucia (CSIC))

Slides Fuentes.pdf

10:30 → 11:00 Coffee Break

11:00 → 12:35 The (Enrico) Fermi connection: particle acceleration, simulations, and theory

11:00 Broadband Modeling of Blazar Spectra with a Turbulent Acceleration Model

Speaker: Katsuaki ASANO (Institute for Cosmic Ray Research - The University of Tokyo)

Slides Asano.pdf

11:20 Signatures of stochastic acceleration in the spectral distributions of Synchro-Self-Compton sources: A self consistent modeling of TeV blazars' flare

Speaker: Andrea TRAMACERE (ISDC)

Slides Tramacere.pdf

11:40 Modelling blazar flaring using a time-dependent fluid jet emission model - an explanation for orphan flares and radio lags

Speaker: William POTTER (University of Oxford)

Slides Potter.pdf

12:00 An observationally driven approach to blazars (Review)

Speaker: Paolo PADOVANI (ESO)

Slides Padovani.pdf

12:35 → 13:40 Lunch Time

13:40 → 15:10 Jet signatures of super-massive black hole binaries and relation to low-frequency gravitational waves

13:40 Supermassive Black Hole Binary Candidates identified as blazars or quasars with periodic variability -- prospects for multi-messenger astronomy (Invited)

Speaker: Maria CHARISI (Caltech)

14:10 OJ287: Deciphering the “Rosetta stone of blazars”

Speaker: Silke BRITZEN (Max Planck Institute for Radio Astronomy)

Slides Britzen.pdf

14:30 Evidence of a Supermassive Black Hole Binary system in PG 1553+11.3

Speaker: Zulema ABRAHAM (Sao Paulo University)

Slides Abraham.pdf

14:50 Year-long quasi-periodicities of gamma-ray blazars: A cautious approach

Speaker: Stefano COVINO (INAF - Brera Astronomical Observatory)

Slides Covino.pdf

15:10 → 15:40 Coffee Break

15:40 → 17:30 Particle content and connection to ultrahigh-energy cosmic rays and neutrinos

15:40 Blazars as sources of high-energy neutrinos (Invited)

Speaker: Maria PETROPOULOU (Princeton University)

Slides Petropoulou.pdf

16:10 Very High Energy gamma-ray detection by MAGIC from a direction coincident with the IceCube neutrino event

Speaker: Wrijupan BHATTACHARYYA (DESY Zeuthen)

16:30 On the Detection Potential of Short Blazar Flares for Current Neutrino Telescopes

Speaker: Michael KRETER (University of Wuerzburg)

Slides Kreter.pdf

16:50 Blazars as neutrinos factories

Speaker: Chiara RIGHI (University of Insubria)

Slides Righi.pdf

17:10 Modeling the electromagnetic and neutrino flux for the IceCube candidate source TXS 0506+056

Speaker: Andrea ZECH (LUTH - Observatoire de Paris)

Slides Zech.pdf

19:30 → 00:20 Social Dinner

Address: Corso Vittorio Emanuele II 181, 10139 Torino.

Web page of the restaurant: https://www.pizzeriaisolitiignoti.com/eng/

Friday, 15 June

09:00 → 10:30 Jet collimation on Event-Horizon scales and jet launching

09:00 Cores of blazars studied at unprecedented angular resolution (Invited)

Speaker: Yuri KOVALEV (Astro Space Center of Lebedev Physical Institute)

Slides Kovalev.pdf

09:30 Relationship between interstellar scintillation and intrinsic variability of blazars

Speaker: Jun Yi KOAY (Institute of Astronomy and Astrophysics, Academia Sinica)

09:50 Exploring the the radio and GeV-TeV gamma-ray emission connection in Fermi blazars

Speaker: Rocco LICO (UniBo - INAF - Istituto di Radioastronomia)

Slides Lico.pdf

10:10 Spectral Energy Distributions of Blazar substructure

Speaker: Stefan WAGNER (LSW - University of Heidelberg)

Slides Wagner.pdf

10:30 → 11:00 Coffee Break

11:00 → 12:30 Jet collimation on Event-Horizon scales and jet launching

11:00 Space-VLBI imaging of nearby radio galaxies with RadioAstron (Invited)

Speaker: Toumas SAVOLAINEN (Aalto University)

Slides Savolainen.pdf

11:30 First Principles Understanding of Black Hole Accretion

Speaker: Monika MOSCIBRODZKA (Radboud University)

11:50 From the Micro to the Macro - Bridging the Gap Between The Theory and Observation of Blazar Jets

Speaker: Nicholas MACDONALD (Max Planck Institute for Radio Astronomy)

Slides MacDonald.pdf

12:10 Zooming into the jet launching region of the radio galaxy Cygnus A

Speaker: UWE BACH (Max-Planck-Institut for Radioastronomy)

Slides Bach.pdf

12:30 → 12:40 Remembering the 1978 Pittsburg BL Lac meeting (J. Wardle)

12:40 → 14:00 Lunch Time

14:00 → 15:20 Jet collimation on Event-Horizon scales and jet launching

14:00 Probing the innermost regions of blazar jets at tens of microarcseconds through space and millimeter VLBI observations

Speaker: Jose L. GOMEZ (Instituto de Astrofisica de Andalucia (CSIC))

14:20 Imaging the Innermost Jet Region of Radio Quasars 3C454.3 and OJ287

Speaker: Thalia TRAIANOU (Max Planck Institute for Radio Astronomy)

14:40 The extreme blazar 0235+164 as seen by extensive ground and space radio observations

Speaker: Alexander KUTKIN (Astro Space Center - LPI)

15:00 Time Variability of the Core-Shift Effect in the Blazar 3C454.3

Speaker: Wara CHAMANI (Aalto University - Metsahovi Radio Observatory)

15:20 → 15:50 Coffee Break

15:50 → 16:50 Jet collimation on Event-Horizon scales and jet launching

15:50 AGN physics from multiepoch core-shift measurements in a large sample of radio sources

Speaker: Alexander PLAVIN (Moscow Institute of Physics and Technology)

Slides Plavin.pdf

16:10 Correlation between jet magnetic flux and jet power

Speaker: Elena NOKHRINA (Moscow Institute of Physics and Technology)

Slides Nokhrina1.pdf

16:30 The Properties of Parsec-Scale Blazar Jets

Speaker: Justin FINKE (NRL)

Slides Finke.pdf

16:50 → 17:25 Closing

16:50 Closing Lecture

Speaker: Meg URRY (Yale University)

17:25 → 17:30 Final Remarks