Results 51 to 60 of about 16,751 (259)

The fundamental plane of blazars based on the black hole spin-mass energy [PDF]

open access: yesMonthly notices of the Royal Astronomical Society
We examine the fundamental plane of 91 Blazars which include FSRQs and BL Lacs with known X-ray luminosity (LR), radio luminosity (LX), and black hole mass measurements (M) to reflect the relationship between jet and accretion for blazars.
Xu Zhang   +6 more
semanticscholar   +1 more source

Blazars

open access: yesAIP Conference Proceedings, 2001
Invited talk at "International Symposium on High Energy Gamma-Ray Astronomy", Heidelberg, Eds. F. Aharonian and H.
Sikora, M., Madejski, G.
openaire   +3 more sources

Multi-Wavelength Intra-Day Variability and Quasi-Periodic Oscillation in Blazars

open access: yesGalaxies, 2017
We reviewed multi-wavelength blazars variability and detection of quasi-periodic oscillations on intra-day timescales. The variability timescale from a few minutes to up to less than a days is commonly known as intra-day variability.
Alok C. Gupta
doaj   +1 more source

X-ray Spectral Evolution of High Energy Peaked Blazars

open access: yesGalaxies, 2020
The synchrotron hump of the high energy peaked blazars generally lies in the 0.1–10 keV range and such sources show extreme flux and spectral variability in X-ray bands. Various spectral studies showed that the X-ray spectra of high energy peaked blazars
Haritma Gaur
doaj   +1 more source

Discovery of Hidden Blazars [PDF]

open access: yesScience, 2001
Every radio-loud quasar may have blazar activities, according to a unified scheme where the differences in both optical and radio observations of radio-loud quasars are the result of different viewing angles. We have predicted that blazars may be detected using emission line ratio variations caused by variable illumination of gas clouds in the broad ...
Ma, Feng, Wills, Beverley J.
openaire   +3 more sources

Immunohistopathology of oral mucosal chronic graft‐versus‐host disease severity and duration

open access: yesOral 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

Accretion discs in blazars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
Accepted for publication (17 August 2009) in ...
Jolley, E. J. D.   +3 more
openaire   +3 more sources

The Blazar Sequence and Its Physical Understanding

open access: yesGalaxies, 2022
Introduced in 1998 to attempt a first unified view of the broad-band emission properties of blazars, the blazar sequence has been extensively used in the past 25 years to guide observations as well as the physical interpretation of the overall emission ...
Elisa Prandini, Gabriele Ghisellini
doaj   +1 more source

FLARING PATTERNS IN BLAZARS [PDF]

open access: yesThe Astrophysical Journal, 2011
6 pages, 3 figures, accepted for publication in The Astrophysical ...
Paggi A   +4 more
openaire   +2 more sources

Source-count Distribution of Gamma-Ray Blazars [PDF]

open access: yesAstrophysical Journal, 2020
With 10 years of operation and an exceptional data set, the Fermi-Large Area Telescope allows us to unveil the detailed composition of the extragalactic γ-ray sky above 100 MeV. In this paper, we derive the intrinsic source-count distribution (logN–logS)
L. Marcotulli, M. D. Mauro, M. Ajello
semanticscholar   +1 more source

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