Results 171 to 180 of about 8,662 (194)

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

A follow-up strategy enabling discovery of electromagnetic counterparts to highly magnified gravitationally lensed gravitational waves. [PDF]

Philos Trans A Math Phys Eng Sci
Ryczanowski D, Cooke J, Freeburn J, Gompertz B, Haines CP, Nicholl M, Smith G, Van Bemmel N, Zhang J.   +8 more
europepmc   +1 more source

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Some implications of high luminosity and fast variability in active galactic nuclei

Advances in Space Research, 1984
An analysis of the variability timescale against bolometric luminosity for Active Galactic Nuclei shows that a number of sources violate the Eddington limit. The average ratio (L/LE) is found to change according to group classification. Whilst Seyfert Galaxies have luminosities well within the Eddington limit, Quasars and BL Lac object tend to approach
L. Bassani, A.J. Dean
openaire   +1 more source

Spectrophotometric monitoring of high luminosity active galactic nuclei - II. First results

Monthly Notices of the Royal Astronomical Society, 1989
Les premiers resultats d'un programme d'etude spectrophotometrique de noyaux actifs de galaxies a hautes luminosites sont presentes. On montre comment la variabilite des raies d'emission dans les noyaux actifs a hautes luminosites pourrait etre une caracteristique commune a ces objets et on decrit quelques variations observees dans les profils des ...
E. Perez, M. V. Penston, M. Moles
openaire   +1 more source

X-ray Luminosity function of Active Galactic Nuclei in Galaxy clusters

AIP Conference Proceedings, 2009
Eric Wilcots
exaly  

Testing black hole jet scaling relations in low-luminosity active galactic nuclei

Monthly Notices of the Royal Astronomical Society, 2011
Andrea Merloni, Paul Sell, Francesco De Gasperin   +2 more
exaly  

Radio sources in low-luminosity active galactic nuclei

Astronomy and Astrophysics, 2002
Heino Falcke, N M Nagar, A S Wilson
exaly  

Spectral-luminosity evolution of active galactic nuclei (AGN)

AIP Conference Proceedings, 1992
Boldt Elihu
exaly  

The Relationship between Luminosity and Broad‐Line Region Size in Active Galactic Nuclei

Astrophysical Journal, 2005
Bradley Peterson, M Vestergaard, Dan Maoz   +2 more
exaly  

The luminosity function of EGRET-detected gamma-ray loud active galactic nuclei

AIP Conference Proceedings, 1994
Von Montigny C, Michelson P F, Kniffen D A   +2 more
exaly