Results 181 to 190 of about 234,699 (281)

Exploring Changing-look Active Galactic Nuclei with the Sloan Digital Sky Survey V: First Year Results

The Astrophysical Journal
“Changing-look” active galactic nuclei (CL-AGNs) challenge our basic ideas about the physics of accretion flows and circumnuclear gas around supermassive black holes. Using first-year Sloan Digital Sky Survey V (SDSS-V) repeated spectroscopy of nearly 29,
Grisha Zeltyn, Benny Trakhtenbrot, Michael Eracleous, Qian Yang, Paul Green, Scott F. Anderson, Stephanie LaMassa, Jessie Runnoe, Roberto J. Assef, Franz E. Bauer, W. N. Brandt, Megan C. Davis, Sara E. Frederick, Logan B. Fries, Matthew J. Graham, Norman A. Grogin, Muryel Guolo, Lorena Hernández-García, Anton M. Koekemoer, Mirko Krumpe, Xin Liu, Mary Loli Martínez-Aldama, Claudio Ricci, Donald P. Schneider, Yue Shen, Marzena Śniegowska, Matthew J. Temple, Jonathan R. Trump, Yongquan Xue, Joel R. Brownstein, Tom Dwelly, Sean Morrison, Dmitry Bizyaev, Kaike Pan, Juna A. Kollmeier   +34 more
doaj   +1 more source

Disks around merging binary black holes: From GW150914 to supermassive black holes. [PDF]

Phys Rev D, 2018
Khan A, Paschalidis V, Ruiz M, Shapiro SL.   +3 more
europepmc   +1 more source

Galaxy Light Concentration. I. Index Stability and the Connection with Galaxy Structure, Dynamics, and Supermassive Black Holes [PDF]

, 2001
Alister W. Graham, Ignacio Trujillo, N. Caon   +2 more
openalex   +1 more source

Using of the Correction Schwarzschild radius Equation and Its Application of the Black Holes

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
  This study is a try to compare between the traditional Schwarzschild’s radius and the equation of Schwarzschild’s radius including the photon’s wavelength that is suggested by Kanarev for black holes to correct the error in the calculation of ...
Majida H. Al-kubaisy
doaj  

Time delay of light in the gravitational lensing of supermassive black holes in dark matter halos

European Physical Journal C: Particles and Fields
The dark matter halo has non-negligible effects on the gravitational lensing of supermassive black hole in the galaxy center. Our work presents a study on the time-delay of light in gravitational lensing of black holes enclosed by dark matter halos.
Chen-Kai Qiao, Ping Su
doaj   +1 more source

A Theoretical Model for the [ITAL]M[/ITAL][TINF][CLC]bh[/CLC][/TINF]-σ Relation for Supermassive Black Holes in Galaxies [PDF]

, 2001
Fred C. Adams, D. Graff, D. O. Richstone
openalex   +1 more source

The quest for dual and binary supermassive black holes: A multi-messenger view [PDF]

New astronomy reviews (Print), 2019
A. Rosa, C. Vignali, T. Bogdanovi'c, Pedro R. Capelo, M. Charisi, M. Dotti, B. Husemann, E. Lusso, E. Lusso, E. Lusso, L. Mayer, Z. Paragi, J. Runnoe, J. Runnoe, A. Sesana, A. Sesana, L. Steinborn, S. Bianchi, M. Colpi, L. D. Valle, S. Frey, K. Gabányi, M. Giustini, M. Guainazzi, Z. Haiman, N. H. Ruiz, R. Herrero-Illana, R. Herrero-Illana, K. Iwasawa, S. Komossa, D. Lena, D. Lena, N. Loiseau, M. Pérez-Torres, E. Piconcelli, M. Volonteri   +35 more
semanticscholar   +1 more source

Probing black holes in a dark matter spike of M87 using quasinormal modes

European Physical Journal C: Particles and Fields
Dark matter density can be significantly enhanced by the supermassive black hole at the galactic center, leading to a structure called dark matter spike. Dark matter spike may change the spacetime properties of black holes that constitute deviations from
Dong Liu, Yi Yang, Zheng-Wen Long
doaj   +1 more source

How to Swallow a Sun. [PDF]

Sci Am, 2017
Cenko SB, Gehrels N.
europepmc   +1 more source

Evidence for a Supermassive Black Hole in the S0 Galaxy NGC 3245 [PDF]

, 2001
Aaron J. Barth, M. Sarzi, Hans‐Walter Rix, Luis C. Ho, A. V. Filippenko, W. L. W. Sargent   +5 more
openalex   +1 more source