Results 21 to 30 of about 26,793 (115)

The innermost region of the water megamaser radio galaxy 3C403

, 2007
The standard unified scheme of active galactic nuclei requires the presence of high column densities of gas and dust potentially obscuring the central engine.
Braatz, J., Brunthaler, A., Henkel, C., Menten, K. M., Tarchi, A., Weiss, A.   +5 more
core   +1 more source

Multiple Emission Regions in Jets of the Low-Luminosity Active Galactic Nucleus in NGC 4278

The Astrophysical Journal
The Large High Altitude Air Shower Observatory (LHAASO) has detected very-high-energy gamma rays from the low-ionization nuclear emission-line region galaxy NGC 4278, which has a low-luminosity active galactic nucleus (LLAGN) and symmetric, mildly ...
Samik Dutta, Nayantara Gupta
doaj   +1 more source

NGC 2207/IC 2163: A Grazing Encounter with Large Scale Shocks [PDF]

, 2011
Radio continuum, Spitzer infrared, optical and XMM-Newton X-ray and UVM2 observations are used to study large-scale shock fronts, young star complexes, and the galactic nuclei in the interacting galaxies NGC 2207/IC 2163.
Appleton, Arnaud, Beck, Bruce G. Elmegreen, Calzetti, Colbert, Condon, Curtis Struck, Dale, Dame, Debra M. Elmegreen, Dirk Grupe, Dopita, Draine, Elias Brinks, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Gehrels, Grupe, Grupe, Grupe, Hargrave, Hummel, Matheson, Michele Kaufman, Neff, Ogle, Pahre, Peeters, Peterson, Pérez-González, Rasmussen, Smith, Swartz, Thomasson, Velusamy, Vila, Voges, Wu   +40 more
core   +2 more sources

Discovery of Giant Bubbles in the Hot Gaseous Halo of the Massive Disk Galaxy NGC 6286

The Astrophysical Journal
Based on archival Chandra X-ray observation, optical integral-field spectroscopic data, and radio interferometric data, we report the discovery of a pair of giant bubbles (with a projected radius ∼5 kpc) of ionized gas emerging from a highly inclined ...
Lin He, Zhiyuan Li, Zongnan Li, Rubén García-Benito, Yuanqi Liu, Meicun Hou   +5 more
doaj   +1 more source

IGR J14488-4008: an X-ray peculiar giant radio galaxy discovered by INTEGRAL [PDF]

, 2015
In this paper we report the discovery and detailed radio/X-ray analysis of a peculiar giant radio galaxy (GRG) detected by INTEGRAL, IGR J14488-4008. The source has been recently classified as a Seyfert 1.2 galaxy at redshift 0.123; the radio data denote
Bassani, Loredana, Bird, Antony J., Dallacasa, Daniele, Lal, Dharam Vir, Malizia, Angela, Molina, Manuela, Ubertini, Pietro, Venturi, Tiziana   +7 more
core   +2 more sources

Jet Interaction with Galaxy Cluster Mergers

The Astrophysical Journal
Active galactic nucleus (AGN) bubbles in cool-core galaxy clusters are believed to facilitate the transport of cosmic-ray electrons (CRe) throughout the cluster.
P. Domínguez-Fernández, J. ZuHone, R. Weinberger, E. Bellomi, L. Hernquist, P. Nulsen, G. Brunetti   +6 more
doaj   +1 more source

On the origin of X-shaped radio galaxies

, 2011
After a brief, critical review of the leading explanations proposed for the small but important subset of radio galaxies showing an X-shaped morphology (XRGs) we propose a generalized model, based on the jet-shell interaction and spin-flip hypotheses ...
Balcells, Balcells, Barai, Battistini, Biermann, Black, Blandford, Bogdanovič, Cavaliere, Charmandaris, Cheung, Cheung, Choi, de Gouveia Dal Pino, Dupraz, Evans, Evans, Falceta-Gonçalves, Falle, Fanaroff, Ferrarese, Gergely, Giovannini, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Gopal-Krishna, Heinz, Hernquist, Higgins, Hodges-Kluck, Hodges-Kluck, Hodges-Kluck, Hogbom, Holt, Hooda, Hooda, Hota, Israel, Kaiser, Kaiser, Kaiser, Kawakatu, Klein, Komossa, Komossa, Kompaneets, Konar, Kraft, Kunert-Bajraszewska, Kunert-Bajraszewska, Lal, Landt, Lara, Leahy, Leahy, Lippai, Liu, Liu, Liu, Liu, László Á. Gergely, Magorrian, Malin, Malin, Merritt, Miller, Nagar, Nakamura, Natarajan, Noel-Storr, Oosterloo, Palimaka, Paul J. Wiita, Perez-Fournon, Peter L. Biermann, Pierfederici, Press, Prieur, Prieur, Quinn, Ramos Almeida, Rodriguez, Rottmann, Sadler, Sansom, Saripalli, Saripalli, Schiminovich, Schiminovich, Schoenmakers, Shields, Silk, Sillanpaa, Stocke, Sutherland, Tadhunter, Valtonen, Wang, Wang, Wiita, Wilson, Wirth, Worrall, Zeldovich, Zhang, ZieStocr   +112 more
core   +1 more source

Bipolar-Hyper-Shell Galactic Center Statrburst Model: Further Evidence from ROSAT Data and New Radio and X-ray Simulations [PDF]

, 1999
Using the all-sky ROSAT soft X-ray and 408-MHz radio continuum data, we show that the North Polar Spur and its western and southern counter-spurs draw a giant dumbbell-shape necked at the galactic plane.
Berkhuijsen E., Egger R. J., Genzel R., Haslam C. G. T., Laumbach D. D., Mollenhoff C., Nakai N., Nakai N., Oort J. H., Pietsch W., Sakashita S., Sofue Y., Sofue Y., Sofue Y., Sofue Y., van Albada G. D., Vogler A., Vogler A., Yoshiaki Sofue   +18 more
core   +3 more sources

Astronomaly Protege: Discovery through Human-machine Collaboration

The Astronomical Journal
Modern telescopes generate catalogs of millions of objects with the potential for new scientific discoveries, but this is beyond what can be examined visually.
Michelle Lochner, Lawrence Rudnick
doaj   +1 more source

A radio study of the superwind galaxy NGC1482

, 2004
We present multifrequency radio continuum as well as HI observations of the superwind galaxy NGC1482, with both the GMRT and the VLA. This galaxy has a remarkable hourglass-shaped optical emission line outflow as well as bi-polar soft X-ray bubbles on ...
Allen, Ananda Hota, Baars, Balsara, Baum, Chini, Colbert, Colbert, Collison, Condon, Condon, Condon, Condon, D. J. Saikia, Da Costa, Dahlem, de Vaucouleurs, Elfhag, Hameed, Heckman, Heckman, Heckman, Hota, Huang, Jarrett, Kewley, Krolik, Larson, Lira, Melioli, Mirabel, Noreau, Pettini, Roth, Saikia, Sanders, Spergel, Strickland, Strickland, Tully, Ulvestad, van Driel, Veilleux, Veilleux, Veilleux, Veilleux, Weaver, Webber, Young, Zezas, Zezas   +50 more
core   +2 more sources