Results 151 to 160 of about 77,605 (280)

Profiles of emission lines in active galactic nuclei - III. Observations of Ha, [N II] and [S II] profiles [PDF]

, 1990
I. Busko, J. E. Steiner
openalex   +1 more source

On the two states of CYG X-1 and related sources [PDF]

A model for active galactic nuclei (AGN), employing quasi-spherical accretion onto a black hole, when scaled down to solar mass objects, provides a straightforward account of the bimodal spectral behavior of Cyg X-1 and the other galactic black hole ...
Kazanas, D.
core   +1 more source

Low-ionization active galactic nuclei - X-ray or shock heated?

, 1983
J. P. Halpern, J. E. Steiner
openalex   +1 more source

X-Ray Spectra and Time Variability of Active Galactic Nuclei [PDF]

, 1993
R. F Mushotzky
openalex   +1 more source

Evolution of self-gravitating accretion disks in active galactic nuclei

, 1989
Isaac Shlosman, Mitchell C. Begelman
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X-ray versus optically selected active galactic nuclei: a comparative study of the luminosity functions and evolution rates [PDF]

, 1994
A. Franceschini, F. La Franca, S. Cristiani, J. M. Martín-Mirones   +3 more
openalex   +1 more source

ABSTRACTS

Precision Radiation Oncology, EarlyView.
wiley   +1 more source

Late-time Radio Brightening and Emergence of a Radio Jet in the Changing-look AGN 1ES 1927+654

The Astrophysical Journal Letters
We present multifrequency (5–345 GHz) and multiresolution radio observations of 1ES 1927+654, widely considered one of the most unusual and extreme changing-look active galactic nuclei (CL-AGNs).
Eileen T. Meyer, Sibasish Laha, Onic I. Shuvo, Agniva Roychowdhury, David A. Green, Lauren Rhodes, Amelia M. Hankla, Alexander Philippov, Rostom Mbarek, Ari laor, Mitchell C. Begelman, Dev R. Sadaula, Ritesh Ghosh, Gabriele Bruni, Francesca Panessa, Matteo Guainazzi, Ehud Behar, Megan Masterson, Haocheng Zhang, Xiaolong Yang, Mark A. Gurwell, Garrett K. Keating, David Williams-Baldwin, Justin D. Bray, Emmanuel K. Bempong-Manful, Nicholas Wrigley, Stefano Bianchi, Federica Ricci, Fabio La Franca, Erin Kara, Markos Georganopoulos, Samantha Oates, Matt Nicholl, Main Pal, S. Bradley Cenko   +34 more
doaj   +1 more source

Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]

Astron Astrophys Rev, 2023
Ruszkowski M, Pfrommer C.
europepmc   +1 more source

Search for 10 TeV gamma-ray emission from active galactic nuclei with the Tibet air shower array [PDF]

, 1994
M. Amenomori, Z. Cao, B. Z. Dai, L. K. Ding, Y. X. Feng, Z. Y. Feng, K. Hibino, N. Hotta, Q. Huang, A. X. Huo, H. Y. Jia, G. Z. Jiang, S. Q. Jiao, F. Kajino, K. Kasahara, Labaciren Labaciren, S. M. Liu, D. M. Mei, L. Meng, X. R. Meng, Mimaciren, K. Mizutani, J. Mu, H. Nanjo, M. Nishizawa, A. Oguro, M. Ohnishi, I. Ohta, T. Ouchi, J. R. Ren, To. Saito, M. Sakata, Zhi‐Cheng Shi, M. Shibata, T. Shirai, H. Sugimoto, Xudong Sun, K. Taira, Y. H. Tan, N. Tateyama, S. Torii, H. Wang, C. Z. Wen, Y. Yamamoto, G. C. Yu, Peng Yuan, T. Yuda, C. S. Zhang, Honglin Zhang, Li Zhang, Zhasang, Zhaxiciren Zhaxiciren, W. D. Zhou, The Tibet As Gamma Collaboration   +53 more
openalex   +1 more source