Results 161 to 170 of about 33,870 (293)
Neutrino oscillations and blazars [PDF]
Astroparticle Physics, 1999 14 pages, 3 postscript figures, using elsart.sty, invited talk to appear in the Proceedings of the VERITAS Workshop on TeV Astrophysics of Extragalactic Sources, eds. M. Catanese, J. Quinn, and T. Weekes (special issue of Astropart. Phys.) ** replaced by a significantly extended version **
openaire +4 more sources
, 2006 7 pages, 2 figures. To appear in the proceedings of the Workshop "Mining the Sky", Munich, August 2000, ESO Astrophysics Symposia, in press.
Paolo Giommi, Paolo Padovani
openaire +3 more sources
Galaxies, 2017 In this work, by making use of the large software and database resources made available through online facilities such as the ASI Science Data Center (ASDC), we present a novel approach to the modelling of blazar emission whereby the multi-epoch SED for ...
Ulisses Barres de Almeida +5 more
doaj +1 more source
Extreme blazars as counterparts of IceCube astrophysical neutrinos [PDF]
, 2016 We explore the correlation of $\gamma$-ray emitting blazars with IceCube neutrinos by using three very recently completed, and independently built, catalogues and the latest neutrino lists.
P. Padovani +6 more
semanticscholar +1 more source
An Optical View of Extragalactic γ-Ray Emitters
Frontiers in Astronomy and Space Sciences, 2017 The Fermi Gamma-ray Observatory discovered about a thousand extragalactic sources emitting energy from 100 MeV to 100 GeV. The majority of these sources belong to the class of blazars characterized by a quasi-featureless optical spectrum (BL Lac Objects).
Simona Paiano +6 more
doaj +1 more source
Jets, Blazars and the EBL in the GLAST-EXIST Era
, 2007 The synergy of GLAST and the proposed EXIST mission as the Black Hole Finder Probe in the Beyond Einstein Program is remarkable. With its full-sky per orbit hard X-ray imaging (3-600 keV) and "nuFnu" sensitivity comparable to GLAST, EXIST could measure ...
Grindlay, Jonathan E., Team, the EXIST
core +1 more source
The blazar's divide and the properties of Fermi blazars
, 2009 8 pages, 8 figures. Invited talk at the meeting: Accretion and ejection in AGN: a global view (Como, June 2009). To be published in Astron. Soc. of the Pacific Conf. Series (ASPCS)
openaire +2 more sources
The Astrophysical JournalModeling the multiwavelength spectral energy distributions (SEDs) of blazars provides key insights into the underlying physical processes responsible for the emission.
D. Bégué +7 more
doaj +1 more source
Spectral Properties of Fermi Blazars and their Unification Schemes
Open Astronomy, 2020 We use the distributions of spectral indices (αv ) of a large homogenous sample of Fermi-detected blazars to re-investigate the relationship between flat spectrum radio quasars (FSRQs) and subclasses of BL Lac objects (BL Lacs).
Iyida Evaristus U. +3 more
doaj +1 more source
Neutrino Detection Rates from Lepto-hadronic Model Simulations of Bright Blazar Flares
The Astrophysical JournalThere is mounting evidence that blazars are the sources of part of the very-high-energy astrophysical neutrino flux detected by IceCube. In particular, there have been several spatial and temporal coincidences of individual IceCube neutrino events with ...
Joshua Robinson, Markus Böttcher
doaj +1 more source