Results 41 to 50 of about 1,814 (225)
Multiwavelength Long-term Studies of Radio Galaxy NGC 1275
The Astrophysical JournalIt is widely considered that the processes of an interaction between the energy and radiation, which are generated in the active galactic nuclei (AGN) by accretion onto their central massive black hole with the gas in the host galaxy, take a great part ...
Vera G. Sinitsyna, Vera Y. Sinitsyna
doaj +1 more source
Ultrafast Variability in AGN Jets: Intermittency and Lighthouse Effect
The Astrophysical Journal Letters, 2023 Gamma-ray flares from active galactic nuclei (AGNs) show substantial variability on ultrafast timescales (i.e., shorter than the light-crossing time of the AGN’s supermassive black hole).
Emanuele Sobacchi +2 more
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Jet speeds in wide-angle tailed radio galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 10 pages, 18 figures, accepted for publication in ...
Jetha, Nazirah N. +2 more
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Influence of Jets on [O iii] Extensions in Green Pea/Bean Galaxies
The Astrophysical JournalWe present a study investigating the influence of jets on galaxies exhibiting strong [O iii ] λ 5007 emission, known as Green Peas and Green Beans . Our sample comprised 12 nearby sources ( z ∼ 0.04–0.1, six with jets and six without jets) with high [O ...
Harshitha K. Bhat +5 more
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Jet Interaction with Galaxy Cluster Mergers
The Astrophysical JournalAbstract Active galactic nucleus (AGN) bubbles in cool-core galaxy clusters are believed to facilitate the transport of cosmic-ray electrons (CRe) throughout the cluster. Recent radio observations reveal the complex morphologies of cluster diffuse emission, potentially linked to interactions between AGN bursts and the cluster environment.
P. Domínguez-Fernández +6 more
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Rising jet-inflated bubbles in clusters of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2008 Abstract We conduct two-dimensional axisymmetric (referred to as 2.5D) hydrodynamical numerical simulations of bubble evolution in clusters of galaxies. We inflate bubbles using slow, massive jets with a wide opening angle, and follow their evolution as they rise through the intracluster medium.
Sternberg, Assaf, Soker, Noam
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Transactions of the Institute of British Geographers, EarlyView.ABSTRACT AI assistants on spacecrafts. Netflix streamed through inter‐planetary communication networks. Colonies on Mars by 2050. While the glamorous public–private ventures into outer space curate discussions on the technical specificities of these proposed projects, this paper reorients discussions on such developments through critical frameworks of ...
Yung Au
wiley +1 more source
Archives of impact: The politics of craters on Earth
Geographical Research, Volume 64, Issue 2, May 2026.This paper examines Earth’s 195 confirmed impact craters as archives, exploring their cataloguing and presentation as heritage sites. It argues Western scientific framings using military language and emphasising catastrophe overlook settler colonialism’s violent histories and marginalise indigenous earth‐sky cosmologies.
Gareth Hoskins
wiley +1 more source
Can the Symmetric Fermi and eROSITA Bubbles Be Produced by Tilted Jets?
The Astrophysical JournalThe Fermi Gamma-Ray Space Telescope reveals two large bubbles in the Galaxy, extending nearly symmetrically ∼50° above and below the Galactic center (GC).
Po-Hsun Tseng +4 more
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JET-POWERED MOLECULAR HYDROGEN EMISSION FROM RADIO GALAXIES [PDF]
The Astrophysical Journal, 2010 H2 pure-rotational emission lines are detected from warm (100-1500 K) molecular gas in 17/55 (31% of) radio galaxies at redshift z<0.22 observed with the Spitzer IR Spectrograph. The summed H2 0-0 S(0)-S(3) line luminosities are L(H2)=7E38-2E42 erg/s, yielding warm H2 masses up to 2E10 Msun. These radio galaxies, of both FR radio morphological types,
Ogle, Patrick M. +7 more
openaire +3 more sources