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
The (Enrico) Fermi connection: particle acceleration, simulations, and theoryAula Darwin
Aula Darwin
Torino - Italy
Via Nizza 52
8:45 AM
Dissipation and Particle Acceleration in Blazar Jets (Review)35m
Speaker:
Mitch BEGELMAN(University of Colorado, Boulder)
Slides
9:20 AM
Extragalactic Jet Dynamics after Half a Century of MHD modelling. Where are we? (Invited)30m
Speaker:
Andrea MIGNONE(UniTO)
9:50 AM
Reconnection and Associated Flares in Global Relativistic Jets Containing Helical Magnetic Fields with PIC Simulations20m
Speaker:
Kenichi NISHIKAWA(Univeristy of Alabama in Huntsville)
Slides
10:10 AM
Total and linearly polarized synchrotron emission from overpressured magnetized relativistic jets20m
Speaker:
Antonio FUENTES(Instituto de Astrofisica de Andalucia (CSIC))
Slides
10:30 AM
→
11:00 AM
Coffee Break
30m
Aula Darwin
Aula Darwin
Torino - Italy
Via Nizza 52
11:00 AM
→
12:35 PM
The (Enrico) Fermi connection: particle acceleration, simulations, and theoryAula Darwin
Aula Darwin
Torino - Italy
Via Nizza 52
11:00 AM
Broadband Modeling of Blazar Spectra with a Turbulent Acceleration Model20m
Speaker:
Katsuaki ASANO(Institute for Cosmic Ray Research - The University of Tokyo)
Slides
11:20 AM
Signatures of stochastic acceleration in the spectral distributions of Synchro-Self-Compton sources: A self consistent modeling of TeV blazars' flare20m
Speaker:
Andrea TRAMACERE(ISDC)
Slides
11:40 AM
Modelling blazar flaring using a time-dependent fluid jet emission model - an explanation for orphan flares and radio lags20m
Speaker:
William POTTER(University of Oxford)
Slides
12:00 PM
An observationally driven approach to blazars (Review)30m
Speaker:
Paolo PADOVANI(ESO)
Slides
12:35 PM
→
1:40 PM
Lunch Time
1h 5m
Aula Darwin
Aula Darwin
Torino - Italy
Via Nizza 52
1:40 PM
→
3:10 PM
Jet signatures of super-massive black hole binaries and relation to low-frequency gravitational wavesAula Darwin
Aula Darwin
Torino - Italy
Via Nizza 52
1:40 PM
Supermassive Black Hole Binary Candidates identified as blazars or quasars with periodic variability -- prospects for multi-messenger astronomy (Invited)30m
Speaker:
Maria CHARISI(Caltech)
2:10 PM
OJ287: Deciphering the “Rosetta stone of blazars”20m
Speaker:
Silke BRITZEN(Max Planck Institute for Radio Astronomy)
Slides
2:30 PM
Evidence of a Supermassive Black Hole Binary system in PG 1553+11.320m
Speaker:
Zulema ABRAHAM(Sao Paulo University)
Slides
2:50 PM
Year-long quasi-periodicities of gamma-ray blazars: A cautious approach20m