Results 221 to 230 of about 55,785 (258)

Strong perturbation of a super-virial Magellanic circum-galactic medium

, 2023
Locatelli N, Ponti G, Merloni A, Zheng X, Dennerl K, Haberl F, Maitra C, Sanders J, Sasaki M, Vazza F.   +9 more
europepmc   +1 more source

Spiers Memorial Lecture: Astrochemistry at high resolution.

Faraday Discuss, 2023
Ceccarelli C.
europepmc   +1 more source

A binary system in the S cluster close to the supermassive black hole Sagittarius A. [PDF]

Nat Commun
Peißker F, Zajaček M, Labadie L, Bordier E, Eckart A, Melamed M, Karas V.   +6 more
europepmc   +1 more source

Water Versus Land on Temperate Rocky Planets. [PDF]

Space Sci Rev
Guimond CM, Spohn T, Berdyugina S, Byrne PK, Coltice N, Glaser DM, Lingam M, Lineweaver CH, Cawood PA.   +8 more
europepmc   +1 more source

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The relative orientation of the accretion disk and host galaxy disk in Seyferts

New Astronomy Reviews, 2002
We present the results of the study of the orientation of the accretion disk relative to the host galaxy disk in Seyfert galaxies. We used a sample selected by a mostly isotropic property, the flux at 60 μm, with radio and optical data homogeneously observed and analyzed, to avoid selection effects.
H.R. Schmitt, A.L. Kinney
exaly   +2 more sources

Accretion Disks and the Link Between an AGN and its Host Galaxy

1989
We examine the possible role of accretion disks in bringing matter from the interstellar medium into the central regions of an active galactic nucleus (AGN). Thin axisymmetric accretion disks are not a viable means of transporting fuel to luminous AGNs on scales larger than a fraction of a parsec, because 1) the inflow time scale is too long; and 2 ...
Mitchell C Begelman, J Frank, Isaac Shlosman   +2 more
exaly   +2 more sources

Mass accretion by the nuclei of disk galaxies

Astrophysics and Space Science, 1984
In this work a model has been proposed to explain how the nucleus of a Galaxy can accumulate mass and becomes supermassive — ultimately giving way to gravitational instability leading to an explosion in the nucleus. The process may be repeated many times during the life-span of a Galaxy.
Anuradha Saha, Tara Bhattacharyya, B. Basu   +2 more
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Mass accretion by the nuclei of disk galaxies, II

Astrophysics and Space Science, 1985
Repeated explosions in the nuclei of galaxies are now accepted as observationally established phenomena. Each explosion leads to the ejection of gas from the central region of a galaxy with velocities depending on the strength of the explosive event. In the process the nucleus temporarily becomes gas-deficient.
Tara Bhattacharyya, Anuradha Saha, B. Basu   +2 more
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Counterrotating Galaxies and Accretion Disks

Annals of the New York Academy of Sciences, 1998
ABSTRACT:Theoretical interest in astrophysical disks with counterrotating components of stars and/or gas has been stimulated by recently discovered counterrotating spiral and S0 galaxies. A variety of physical processes can occur in counterrotating disks.
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A large nuclear accretion disk in the active galaxy NGC4261

Nature, 1993
THE powerful emissions from the nuclei of active galaxies and quasars are thought to arise from the accretion of matter onto a massive black hole. Angular momentum will prevent matter from falling directly onto the central mass; instead, an 'accretion disk' should form, within which the gravitationally bound material will lose angular momentum and ...
Walter Jaffe, Holland C. Ford, Laura Ferrarese, Frank van den Bosch, Robert W. O'Connell   +4 more
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