Results 131 to 140 of about 6,255 (211)

Fermi-LAT Stacking Analysis Technique: An Application to Extreme Blazars and Prospects for their CTA Detection

, 2019
We present a likelihood profile stacking technique based on the Fermi-Large Area Telescope (LAT) data to explore the γ-ray characteristics of Fermi-LAT undetected astrophysical populations.
Paliya, Vaidehi, Ajello, Marco, Hartmann, D., Domínguez, A., Ajello, M., Paliya, Vaidehi Sharan, Domínguez Díaz, Alberto, Franckowiak, Anna, Hartmann, Dieter   +8 more
core   +1 more source

Gaia Sees Blazars Move: Locating Optical Flares Using Astrometry

The Astrophysical Journal Letters
When blazars flare, their optical position moves. We show this by combining Gaia DR3 proper motions with epoch photometry for blazars with strong optical jet emission.
A. V. Plavin
doaj   +1 more source

VLBI Analysis of a Potential High-Energy Neutrino Emitter Blazar

Universe
Recent studies suggest that high-energy neutrinos can be produced in the jets of blazars, radio-loud active galactic nuclei (AGN) with jets pointing close to the line of sight.
Janka Kőmíves, Krisztina Éva Gabányi, Sándor Frey, Emma Kun   +3 more
doaj   +1 more source

Multiwavelength analysis of the variability of the blazar 3C 273. [PDF]

Mon Not R Astron Soc, 2020
Fernandes S, Patiño-Álvarez VM, Chavushyan V, Schlegel EM, Valdés JR.   +4 more
europepmc   +1 more source

Extreme Electron Acceleration with Fixed Radiation Energy. [PDF]

Entropy (Basel), 2022
Good MRR, Singha C, Zarikas V.
europepmc   +1 more source

A wind environment and Lorentz factors of tens explain gamma-ray bursts X-ray plateau. [PDF]

Nat Commun, 2022
Dereli-Bégué H, Pe'er A, Ryde F, Oates SR, Zhang B, Dainotti MG.   +5 more
europepmc   +1 more source

Characterizing the Solar Activity Using the Visibility Graph Method. [PDF]

Entropy (Basel), 2023
Zurita-Valencia T, Muñoz V.
europepmc   +1 more source

Gamma-ray flares from relativistic magnetic reconnection in the jet of the quasar 3C 279. [PDF]

Nat Commun, 2020
Shukla A, Mannheim K.
europepmc   +1 more source

A ring-like accretion structure in M87 connecting its black hole and jet. [PDF]

Nature, 2023
Lu RS, Asada K, Krichbaum TP, Park J, Tazaki F, Pu HY, Nakamura M, Lobanov A, Hada K, Akiyama K, Kim JY, Marti-Vidal I, Gómez JL, Kawashima T, Yuan F, Ros E, Alef W, Britzen S, Bremer M, Broderick AE, Doi A, Giovannini G, Giroletti M, Ho PTP, Honma M, Hughes DH, Inoue M, Jiang W, Kino M, Koyama S, Lindqvist M, Liu J, Marscher AP, Matsushita S, Nagai H, Rottmann H, Savolainen T, Schuster KF, Shen ZQ, de Vicente P, Walker RC, Yang H, Zensus JA, Algaba JC, Allardi A, Bach U, Berthold R, Bintley D, Byun DY, Casadio C, Chang SH, Chang CC, Chang SC, Chen CC, Chen MT, Chilson R, Chuter TC, Conway J, Crew GB, Dempsey JT, Dornbusch S, Faber A, Friberg P, García JG, Garrido MG, Han CC, Han KC, Hasegawa Y, Herrero-Illana R, Huang YD, Huang CL, Impellizzeri V, Jiang H, Jinchi H, Jung T, Kallunki J, Kirves P, Kimura K, Koay JY, Koch PM, Kramer C, Kraus A, Kubo D, Kuo CY, Li CT, Lin LC, Liu CT, Liu KY, Lo WP, Lu LM, MacDonald N, Martin-Cocher P, Messias H, Meyer-Zhao Z, Minter A, Nair DG, Nishioka H, Norton TJ, Nystrom G, Ogawa H, Oshiro P, Patel NA, Pen UL, Pidopryhora Y, Pradel N, Raffin PA, Rao R, Ruiz I, Sanchez S, Shaw P, Snow W, Sridharan TK, Srinivasan R, Tercero B, Torne P, Traianou E, Wagner J, Walther C, Wei TS, Yang J, Yu CY.   +120 more
europepmc   +1 more source

Demographics of Blazars

, 2000
invited talk at the Workshop "Blazar Demographics and Physics" Baltimore, July 2000, ASP Conf. Series, P. Padovani and C. M. Urry eds., in press. (6 pages, LaTex, 10 PostScript figures, uses newpasp.sty).
openaire   +2 more sources