Results 51 to 60 of about 18,989 (273)
Multiwavelength study of high-redshift blazars [PDF]
Monthly notices of the Royal Astronomical Society, 2020 High-redshift blazars are among the most powerful objects in the Universe. The spectral and temporal properties of 33 distant blazars (z > 2.5) detected in the high-energy γ-ray band are investigated by analysing the Fermi-LAT and Swift Ultraviolet and
N. Sahakyan +4 more
semanticscholar +1 more source
Review of Education, Volume 10, Issue 1, April 2022., 2022 Abstract Research‐practice partnerships (RPPs) have drawn a great deal of attention as promising structures for bringing educational research and practice closer together. However, promising as RPPs may be, challenges still exist and there have been calls for studies investigating how research can be used within RPPs, and how to include practitioners ...
Simon Sjölund +3 more
wiley +1 more source
AIP 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 +2 more sources
Identifying the 3FHL Catalog. VI. Results of the 2019 Gemini Optical Spectroscopy
The Astronomical Journal, 2023 Active galactic nuclei with their relativistic jets pointed toward the observer are a class of luminous gamma-ray sources commonly known as blazars. The study of this source class is essential to unveil the physical processes powering these extreme jets,
M. Rajagopal +4 more
doaj +1 more source
Source-count Distribution of Gamma-Ray Blazars [PDF]
Astrophysical 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
[Retracted] Current Status of Malignant Tumors after Organ Transplantation
BioMed Research International, Volume 2022, Issue 1, 2022., 2022 Objective. To analyze the diagnosis and treatment of patients with concomitant malignant tumors after organ transplantation by compiling data from organ transplantation patients. Methods. By searching CNKI and PubMed databases, we made a systematic analysis of the studies of postorgan transplantation complicating malignant tumors in the last decade ...
Bairu Shen +7 more
wiley +1 more source
FLARING PATTERNS IN BLAZARS [PDF]
The Astrophysical Journal, 2011 6 pages, 3 figures, accepted for publication in The Astrophysical ...
Marco Tavani +5 more
openaire +4 more sources
The Nature of γ-Ray Variability in Blazars [PDF]
Astrophysical Journal, 2019 We present an in-depth and systematic variability study of a sample of 20 powerful blazars, including 12 BL Lacs and 8 flat-spectrum radio quasars, applying various analysis tools such as flux distribution, symmetry analysis, and time-series analysis on ...
G. Bhatta, N. Dhital
semanticscholar +1 more source
Gaussian Process Modeling Fermi-LAT γ-Ray Blazar Variability: A Sample of Blazars with γ-Ray Quasi-periodicities [PDF]
, 2020 Blazar variability may be driven by stochastic processes. On the other hand, quasi-periodic oscillation (QPO) behaviors were recently reported to be detected in the Fermi-LAT data of blazars.
Shenbang Yang +4 more
semanticscholar +1 more source
The 3HSP catalogue of extreme and high-synchrotron peaked blazars [PDF]
Astronomy & Astrophysics, 2019 Aims. High-synchrotron peaked blazars (HSPs or HBLs) play a central role in very high-energy (VHE) γ-ray astronomy, and likely in neutrino astronomy. Currently, the largest compilation of HSP blazars, the 2WHSP sample, includes 1691 sources, but it is ...
Yu-Ling Chang +4 more
semanticscholar +1 more source