Results 21 to 30 of about 34,519 (239)
The Central Engines of Fermi Blazars [PDF]
, 2021 We present a catalog of central engine properties, i.e., black hole mass (M BH) and accretion luminosity (L disk), for a sample of 1077 blazars detected with the Fermi Large Area Telescope.
V. Paliya +4 more
semanticscholar +1 more source
Frequency and Time Dependence of Linear Polarization in Turbulent Jets of Blazars [PDF]
Galaxies, 2021 Time-variable polarization is an extremely valuable observational tool to probe the dynamical physical conditions of blazar jets. Since 2008, we have been monitoring the flux and linear polarization of a sample of gamma-ray bright blazars at optical ...
A. Marscher, S. Jorstad
semanticscholar +1 more source
Characterizing Long-term Optical Variability Properties of γ-Ray-bright Blazars [PDF]
Astrophysical Journal, 2021 Optical observations of a sample of 12 γ-ray-bright blazars from four optical data archives—American Association of Variable Star Observers, Small and Moderate Aperture Research Telescope System, Catalina, and Steward Observatory—are compiled to create ...
G. Bhatta
semanticscholar +1 more source
Characterizing the Emission Region Properties of Blazars
Astrophysical Journal Supplement Series, 2023 Studies and constraints on the emission region are crucial to the blazar radiation mechanism. Yet previous works have mainly focused on individual sources.
Junhui Fan +6 more
semanticscholar +1 more source
X-ray spectra, light curves and SEDs of blazars frequently observed by Swift [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Blazars research is one of the hot topics of contemporary extragalactic astrophysics. That is because these sources are the most abundant type of extragalactic γ-ray sources and are suspected to play a central role in multimessenger astrophysics.
P. Giommi +21 more
semanticscholar +1 more source
Astrophysical Neutrinos and Blazars [PDF]
Universe, 2021 We review and discuss recent results on the search for correlations between astrophysical neutrinos and γ-ray-detected sources, with many extragalactic studies reporting potential associations with different types of blazars.
P. Giommi, P. Padovani
semanticscholar +1 more source
The Spectral Energy Distributions for 4FGL Blazars
Astrophysical Journal Supplement Series, 2022 In this paper, the multiwavelength data from radio to X-ray bands for 2709 blazars in the 4FGL-DR3 catalog are compiled to calculate their spectral energy distributions using a parabolic equation log(νfν)=P1logν−P22+P3 .
J. H. Yang +21 more
semanticscholar +1 more source
An Optical Overview of Blazars with LAMOST. I. Hunting Changing-look Blazars and New Redshift Estimates [PDF]
, 2021 The extragalactic γ-rays sky observed by the Fermi Large Area Telescope (LAT) is dominated by blazars. In the fourth release of the Fermi LAT Point Source Catalog (4FGL) are sources showing a multifrequency behavior similar to that of blazars but lacking
H. Peña-Herazo +8 more
semanticscholar +1 more source
Cosmic Neutrinos from Temporarily Gamma-suppressed Blazars
Astrophysical Journal Letters, 2021 Despite the uncovered association of a high-energy neutrino with the apparent flaring state of blazar TXS 0506+056 in 2017, the mechanisms leading to astrophysical particle acceleration and neutrino production are still uncertain.
E. Kun +5 more
semanticscholar +1 more source
Immunohistopathology of oral mucosal chronic graft‐versus‐host disease severity and duration
Oral Diseases, Volume 29, Issue 8, Page 3346-3359, November 2023., 2023 Abstract Objective Chronic graft‐versus‐host disease (cGVHD) is the main cause of late non‐relapse mortality following hematopoietic cell transplantation. Oral mucosal (om‐) cGVHD is common, but diagnosis and assessment rely on clinical interpretation and patient‐reported symptoms.
Victor Tollemar +8 more
wiley +1 more source