Results 151 to 160 of about 553 (183)

Feedback mechanisms stopping the star formation in a pair of massive galaxies in the early Universe

Pérez-González P, D'Eugenio F, Pino BRD, Perna M, Uebler H, Maiolino R, Arribas S, Lamperti I, Bunker A, Carniani S, Charlot S, Willott C, Böker T, Parlanti E, Scholtz J, Venturi G, Barro G, Costantin L, Navarro IM, Dunlop J, Magee D, Cresci G.   +21 more
europepmc   +1 more source

Quasi-periodic X-ray eruptions years after a nearby tidal disruption event. [PDF]

Nature
Nicholl M, Pasham DR, Mummery A, Guolo M, Gendreau K, Dewangan GC, Ferrara EC, Remillard R, Bonnerot C, Chakraborty J, Hajela A, Dhillon VS, Gillan AF, Greenwood J, Huber ME, Janiuk A, Salvesen G, van Velzen S, Aamer A, Alexander KD, Angus CR, Arzoumanian Z, Auchettl K, Berger E, de Boer T, Cendes Y, Chambers KC, Chen TW, Chornock R, Fulton MD, Gao H, Gillanders JH, Gomez S, Gompertz BP, Fabian AC, Herman J, Ingram A, Kara E, Laskar T, Lawrence A, Lin CC, Lowe TB, Magnier EA, Margutti R, McGee SL, Minguez P, Moore T, Nathan E, Oates SR, Patra KC, Ramsden P, Ravi V, Ridley EJ, Sheng X, Smartt SJ, Smith KW, Srivastav S, Stein R, Stevance HF, Turner SGD, Wainscoat RJ, Weston J, Wevers T, Young DR.   +63 more
europepmc   +1 more source

The Spectral Energy Distributions of Low-Luminosity Active Galactic Nuclei [PDF]

Astrophysical Journal, 1999
To appear in The Astrophysical Journal.
Luis C. Ho
exaly   +3 more sources

THE LOW-LUMINOSITY END OF THE RADIUS–LUMINOSITY RELATIONSHIP FOR ACTIVE GALACTIC NUCLEI

Astrophysical Journal, 2013
We present an updated and revised analysis of the relationship between the Hbeta broad-line region (BLR) radius and the luminosity of the active galactic nucleus (AGN). Specifically, we have carried out two-dimensional surface brightness decompositions of the host galaxies of 9 new AGNs imaged with the Hubble Space Telescope Wide Field Camera 3.
Bradley Peterson, Matthew Malkan, Marianne Vestergaard   +2 more
exaly   +6 more sources

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Accretion properties of low‐luminosity active galactic nuclei

Astronomische Nachrichten, 2021
AbstractWe aim to leverage the transformational science enabled by the Event Horizon Telescope (EHT) to study the physics of, and near, the black holes in a sample of galaxies covering a large parameter space in supermassive black hole mass, accretion rate, and jet power. To this end, we work on a sample of nearby galaxies whose directly measured black
Venkatessh Ramakrishnan, Chi‐Kwan Chan, Neil Nagar   +2 more
openaire   +1 more source

The Size of the Radio-Emitting Region in Low-Luminosity Active Galactic Nuclei

Astrophysical Journal, 2005
61 pages, 17 figures, 10 tables.
James M. Anderson
exaly   +3 more sources

Radio sources in low-luminosity active galactic nuclei [PDF]

Astronomy and Astrophysics, 2002
to appear in A& ...
Heino Falcke, N M Nagar, A S Wilson
exaly   +3 more sources

Starbursts in Low Luminosity Active Galactic Nuclei

2005
Low Luminosity Active Galactic Nuclei (LLAGN), which comprise low-ionization nuclear emission-line regions (LINERs) and transition-type objects (TOs), represent the most common type of nuclear activity. Here, we search for spectroscopic signatures of starbursts and post-starbursts in LLAGN, and investigate their relationship to the ionization mechanism
Rosa M. González Delgado, Roberto Cid Fernandes   +1 more
openaire   +1 more source

ON THE DISAPPEARANCE OF THE BROAD-LINE REGION IN LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI

Astrophysical Journal, 2009
The disk-wind scenario for the broad-line region (BLR) and toroidal obscuration in active galactic nuclei (AGNs) predicts the disappearance of the BLR at low luminosities. In accordance with the model predictions, data from a nearly complete sample of nearby AGNs show that the BLR disappears at luminosities lower than 5 × 1039(M/107 M☉)2/3 ergs-1 ...
Luis C. Ho, Moshe Elitzur
exaly   +3 more sources

Revealing Low Luminosity Active Galactic Nuclei (ReveaLLAGN)

2021
JWST will be the most sensitive tool ever built for studying the accretion onto supermassive black holes (SMBHs) at the centers of galaxies. While quasars and bright active galactic nuclei (AGN) provide spectacular examples of this accretion, a vast majority of galaxies have black holes accreting at much lower rates.
Seth, Anil C., Boeker, Torsten, Burtscher, Leonard, Davis, Timothy Andrew, Dumont, Antoine Andre, Feldmeier-Krause, Anja, Fernandez Ontiveros, Juan Antonio, Gallo, Elena, Greene, Jenny Emma, Gultekin, Kayhan, Ho, Luis C., Hoenig, Sebastian F., Kamann, Sebastian, Kirkpatrick, Allison, Luetzgendorf, Nora, Markoff, Sera, Neumayer, Nadine, Pellegrini, Eric William, Plotkin, Richard M., Prieto, Almudena, Reines, Amy E., Runnoe, Jessie Caye, Satyapal, Shobita, Strader, Jay, Trump, Jonathan R., Voggel, Karina, Walsh, Jonelle L., Yuan, Feng, van de Ven, Glenn   +28 more
openaire   +1 more source