Results 21 to 30 of about 3,302,674 (254)

The black hole fundamental plane from a uniform sample of radio and X-ray emitting broad line AGNs

, 2006
We derived the black hole fundamental plane relationship among the 1.4GHz radio luminosity (L_r), 0.1-2.4keV X-ray luminosity (L_X), and black hole mass (M) from a uniform broad line SDSS AGN sample including both radio loud and radio quiet X-ray ...
Akritas M. G., Brunner H., Min‐Zhi Kong, Ran Wang, Shakura N. I., Xue‐Bing Wu, Yuan W.   +6 more
core   +1 more source

The clustering of radio galaxies at z~0.55 from the 2SLAQ LRG survey [PDF]

, 2008
We examine the clustering properties of low-power radio galaxies at redshift 0 ...
Croom, Scott M., Johnston, Helen M., Sadler, Elaine M., Wake, David A.   +3 more
core   +2 more sources

Radio properties of Compact Steep Spectrum and GHz-Peaked Spectrum radio sources [PDF]

, 2015
Compact steep spectrum (CSS) and GHz-peaked spectrum (GPS) radio sources represent a large fraction of the extragalactic objects in flux density-limited samples.
Alexander, Araya, Bicknell, Brocksopp, Burns, Cassaro, Conway, Cotton, Cotton, Dallacasa, Dallacasa, Dallacasa, Dasyra, Fanaroff, Fanti, Fanti, Fanti, Fanti, Fanti, Fanti, Garcia-Burillo, Giroletti, Gugliucci, Gupta, Hancock, Kellermann, Kunert, Kunert-Bajraszewska, Kunert-Bajraszewska, Kunert-Bajraszewska, Labiano, Luo, Mack, Mantovani, Mantovani, Mantovani, Marr, Marr, Mingaliev, Morganti, Morganti, Morganti, Morganti, Morganti, Murgia, Murgia, Murgia, Nagai, O'Dea, Ocaña-Flaquer, Orienti, Orienti, Orienti, Orienti, Orienti, Orienti, Orienti, Orienti, Parma, Peck, Peck, Pihlström, Polatidis, Polatidis, Readhead, Rossetti, Rossetti, Rossetti, Saikia, Saikia, Scott, Shulevski, Siemiginowska, Snellen, Snellen, Snellen, Spencer, Stanghellini, Stanghellini, Sutherland, Tingay, Tingay, Tinti, Torniainen, Torniainen, Tremblay, Vermeulen, Wilkinson   +87 more
core   +2 more sources

Radio Continuum Emission at 1.4 GHz from KISS Emission-Line Galaxies

, 2004
We have searched the Faint Images of the Radio Sky at Twenty centimeters (FIRST) and the NRAO VLA Sky Survey (NVSS) 1.4 GHz radio surveys for sources that are coincident with emission-line galaxy (ELG) candidates from the KPNO International Spectroscopic
Benn C. R., Brinkmann W., Caryl Gronwall, Eli Beckerman, J. J. Condon, Jeffrey Van Duyne, John J. Salzer, Kron R. G., Lisa M. Frattare, Lynden-Bell D., Markarian B. E., Prandoni I., Trinh X. Thuan   +12 more
core   +1 more source

Extragalactic radio source evolution under the dual-population unification scheme [PDF]

, 1998
We show that a dual-population unification scheme provides a successful paradigm with which to describe the evolution and beaming of all bright extragalactic radio sources. The paradigm consists of two intrinsic radio-source populations, based on the two
Jackson, C A, Wall, J V
core   +2 more sources

Radio and spectroscopic properties of miniature radio galaxies: revealing the bulk of the radio-loud AGN population

, 2009
We explore radio and spectroscopic properties of a sample of 14 miniature radio galaxies, i.e. early-type core galaxies hosting radio-loud AGN of extremely low radio power, 10^(27-29) erg s^(-1) Hz^(-1) at 1.4 GHz.
A. Capetti, Abraham, Alexander, Allen, Anderson, Anderson, Anderson, Auriemma, Baldwin, Balmaverde, Balmaverde, Balmaverde, Baum, Becker, Becker, Best, Best, Buttiglione, Capetti, Capetti, Capetti, Capetti, Chiaberge, Cohen, Condon, Condon, de Ruiter, de Zotti, Falcke, Fanti, Fanti, Feretti, Filho, Giovannini, Giovannini, Hardcastle, Hardcastle, Heckman, Hine, Ho, Ho, Hummel, Jackson, Jansen, Jones, Kellermann, Kewley, Kunert-Bajraszewska, Lynds, Marcha, Marchã, Martin, Miller, Morganti, Morganti, Nagar, Nagar, Nagar, Nagar, Osterbrock, R. D. Baldi, Rawlings, Rawlings, Reynolds, Sadler, Snellen, Spinrad, Stanger, Torniainen, Ulvestad, Urry, White, Wrobel, Wrobel   +73 more
core   +1 more source

An X-ray selected sample of radio-loud quasars [PDF]

, 2001
We construct the first X-ray selected sample of broad line radio-loud AGN from the EMSS survey. In order to test unifying schemes for radio-loud objects, their spectral and statistical properties (both flat and steep spectrum objects) are examined and ...
A. Celotti, A. Wolter, Avni, Becker, Boyle, Brinkmann, Caccianiga, Cavaliere, Celotti, Chiaberge, Condon, Della Ceca, Della Ceca, Dunlop, Fossati, Ghisellini, Ghisellini, Gioia, Gregory, Laurent-Muehleisen, Maccacaro, Maccacaro, Maraschi, Morris, Padovani, Padovani, Padovani, Perlman, Schmidt, Stark, Stocke, Stocke, Wall, Wolter   +33 more
core   +2 more sources

La radio: vacuna sonora contra la Covid-19 en Cuba

Question, 2020
El presente trabajo pretende reconocer el papel de la radio ante la actual crisis sanitaria que enfrenta el mundo, provocada por la Covid-19. Se centra especialmente en Cuba, cuyo sistema nacional de radio se ha reorganizado para extender sus ondas ...
Zenaida Costales Pérez, Lys Máriam Alfonso Bergantiño   +1 more
doaj   +1 more source

The Evolution of Diffuse Radio Sources in Galaxy Clusters

, 2003
We investigate the evolution and number distribution of radio halos in galaxy clusters. Without re-acceleration or regeneration, the relativistic electrons responsible for the diffuse radio emission will lose their energy via inverse-Compton and ...
Bower R. J., Chorng‐Yuan Hwang, Ebeling H., Kitayama T., Lacey C., Ping‐Hung Kuo, Schlickeiser R., Tribble P. C., Volk H. J., Wing‐Huen Ip   +9 more
core   +3 more sources

The role of black hole mass in quasar radio activity [PDF]

, 2005
We use a homogeneous sample of about 300, 0.3
Bachev, Becker, Blandford, Blandford, Brotherton, Brotherton, Cavaliere, Cirasuolo, Cirasuolo, Cirasuolo, Corbett, Croom, Croom, Di Matteo, Dunlop, Franceschini, Granato, Hewett, Ho, Ivezic, Jarvis, Kellermann, Lacy, Lahav, Laor, M. Magliocchetti, Magliocchetti, Magliocchetti, Magliocchetti, Marchesini, Marziani, Marziani, McLure, McLure, McLure, McLure, McLure, McLure, McLure, Miller, Oshlack, Porciani, R. B. Metcalf, Richards, Schade, Schneider, Silk, Snellen, Sulentic, White, Wold, Woo, Woo   +52 more
core   +3 more sources