Results 121 to 130 of about 4,973 (222)

A Morphological Identification and Study of Radio Galaxies from LoTSS DR2. I. The “Winged” Radio Galaxies

The Astrophysical Journal Supplement Series
We conducted an extensive identification and analysis of various morphological classes and subclasses of radio galaxies using the latest high-resolution data from the second data release of the LOFAR Two-metre Sky Survey.
Soumen Kumar Bera, Taotao Fang, Tapan K. Sasmal, M. Kunert-Bajraszewska, Xuelei Chen, Soumen Mondal   +5 more
doaj   +1 more source

Radio properties of the quasi-periodic eruption source RXJ1301.9+2747 at parsec scales

Astronomy & Astrophysics
Quasi-periodic eruptions (QPEs) are repeating soft X-ray flares associated with galactic nuclei. Several recent works have found evidence that the accretion flow in the galactic nuclei of QPEs is of recent origin, and that it is unlike canonical active ...
von Fellenberg S. D., Arcodia R., Benke P., Goodwin A., Kovalev Y. Y., Ros E., Janssen M., Giustini M., Miniutti G.   +8 more
doaj   +1 more source

The role of environment in the observed Fundamental Plane of radio active galactic nuclei [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
The optical Fundamental Plane of black hole activity relates radio continuum luminosity of Active Galactic Nuclei to [O III] luminosity and black hole mass. We examine the environments of low redshift ($z<0.2$) radio-selected AGN, quantified through galaxy clustering, and find that halo mass provides similar mass scalings to black hole mass in the ...
openaire   +2 more sources

AGN outflows and the cluster cooling flow conundrum

, 2011
Temperature distributions within cores of galaxy clusters indicate gas in the core should cool down rapidly and contract. The cooling flow problem involves the hypothesis that the rapidly cooling gas should eventually condensate into unobserved molecular
Klees, Ilja
core  

Recognizing Blazars Using Radio Morphology from the VLA Sky Survey

The Astrophysical Journal
Blazars are radio-loud active galactic nuclei whose jets have a very small angle to our line of sight. Observationally, the radio emissions are mostly compact or compact-core with a one-sided jet.
Zhang-Liang Xie, Eduardo Bañados, Silvia Belladitta, Chiara Mazzucchelli, Jan-Torge Schindler, Frederick Davies, Bram P. Venemans   +6 more
doaj   +1 more source

ON THE ORIGIN OF ULTRAVIOLET EMISSION AND THE ACCRETION MODEL OF LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI

, 2010
Low-luminosity active galactic nuclei (LLAGNs) are generally believed to be powered by an inner radiatively inefficient, advection-dominated accretion flow (ADAF), an outer truncated thin disk, and a jet.
Zhaolong Yu, Luis C. Ho, Yu, Zhaolong, Feng Yuan, Yuan, Feng, Ho, Luis C.   +5 more
core   +1 more source

HerMES: SPIRE emission from radio-selected active galactic nuclei [PDF]

, 2011
We examine the rest-frame far-infrared emission from powerful radio sources with 1.4-GHz luminosity densities of 25 ≤ log(L_1.4/W Hz^[−1]) ≤ 26.5 in the extragalactic Spitzer First Look Survey field.
A. Blain (7599962), Glenn J, Franceschini, A., M. Symeonidis (7601687), Boselli, A, Omont, A, Solares, EAG, Schulz B, I. G. Roseboom (7601831), Solares, E. A González, E. Ibar, E. Hatziminaoglou, Pearson, C., Maffei, B., Pearson, C. P., B. Schulz, A. Cooray, Wright G, B. Maffei (7601627), Ibar, E., Seymour N, Boselli, A., Page, M., Amblard, A, Conversi, L, K. E. Tugwell, Nguyen HT, Vaccari M, G. Lagache, Dwek, E., Blain, A., Levenson L, Pearson, CP, C. K. Xu (7601702), Rawlings, J. I., H. T. Nguyen (7601639), Ivison, R., S. J. Oliver, Dowell, C., S. Madden, Eales, S, D. Rizzo, Panuzzo P, Schulz, B, Smith, AJ, Rizzo D, Page, MJ, B. Maffei, B. O'Halloran (7601642), Hatziminaoglou, E., A. Papageorgiou (7601648), D. L. Clements, M. Zemcov (7601705), B. Schulz (7601675), N. Lu, Rawlings, J., S. Eales, Arumugam V, Smith AJ, Wang, L., Dowell, CD, Zemcov M, Wang, L, Cava, A., S. Madden (3807316), González Solares, E. A., A. Franceschini (7601597), Madden, S, C. D. Dowell (7601588), I. G. Roseboom, Bock, J., Cava A, M. Pohlen, M. J. Page (7590038), J. A. Stevens (7601684), Rawlings, JI, Lagache, Guilaine, M. Zemcov, Cooray, A, L. Vigroux, Solares, E. A. Gonzalez, Lagache, G., Stevens, J. A., Shupe DL, Rowan-Robinson, M, M. Rowan-Robinson, L. Conversi (7601582), Chanial, P, N. Castro-Rodriguez (7601564), Valtchanov, I, Clements, D., Isaak, Kate Gudrun, Conley, A, A. Papageorgiou, K. Isaak, K. E. Tugwell (7601693), Page, M. J., Valtchanov I, A. J. Smith (7596068), Pérez-Fournon I, Panuzzo, P, J. I. Rawlings, Blain A, Bock J, V. Arumugam (7601537), Lagache G, A. Franceschini, Boselli A, Griffin M, Scott, D., A. Boselli (7601552), G. Wright (7601699), O'Halloran, B, Wright, G, I. Valtchanov, E. Ibar (7601615), Oliver SJ, N. Seymour, Aussel, H, Chanial, P., Papageorgiou, A., Buat, V., Franceschini A, Shupe, DL, Glenn, J, Cooray, A., J. Bock (7599965), Dwek E, G. Wright, DL. Clements (7603355), M. Vaccari (7225847), Dowell, C. D., Roseboom, I., Scott D, Perez-Fournon, I, A. Omont (7601513), Symeonidis M, Franceschini, A, S. J. Oliver (7601528), A. Amblard, D. Rizzo (7601666), Oliver, SJ, Aussel, H., Levenson, L, E. Hatziminaoglou (7601612), L. Wang (2327974), E. Dwek (7601591), Clements, DL, G. Lagache (7601621), Mainetti G, Papageorgiou A, Aussel H, L. Wang, Marchetti, L, M. Griffin, Maffei B, Arumugam, V, I. Pérez-Fournon, Ibar E, Rawlings JI, Griffin, M., Papageorgiou, A, J. Glenn, M. Trichas (7601690), Trichas M, Oliver, S., Castro-Rodríguez, N., Elbaz D, Seymour, Nick, Pohlen, M., Schulz, B., Stevens JA, Roseboom, IG, P. Chanial (7601570), Nguyen, HT, Lu, N., Rizzo, D., Ivison RJ, Zemcov, M., A. Cava, Trichas, M., A. Cooray (7601585), M. Pohlen (7601654), Pearson CP, Vigroux L, Pohlen, M, Chanial P, Conversi L, L. Levenson, Castro-Rodriguez, N, S. Eales (7600850), C. K. Xu, Amblard, A., Oliver, S. J., Nguyen, H., Griffin, M, Conley, A., Symeonidis, M., Eales S, D. L. Shupe (7601681), Roseboom, I. G., Eales, S., Hatziminaoglou E, Clements, D. L., Rowan-Robinson M, Buat, V, A. Blain, Elbaz, D., P. Panuzzo (7601645), Tugwell KE, Scott, D, Wright, Gavin, A. J. Smith, C. P. Pearson (7601651), Arumugam, V., Douglas Scott, Seymour, N, Elbaz, D, I. Perez-Fournon (7590053), Omont A, Xu CK, Isaak, K, Maffei, B, Omont, A., A. Conley (7601579), Stevens, JA, Trichas, M, D. Elbaz (7601594), M. Trichas, J. Glenn (7601603), Conversi, L., Vaccari, M., C. D. Dowell, A. Omont, Shupe, D., L. Marchetti (7601633), D. L. Shupe, Symeonidis, M, Eales, Stephen Anthony, N. Lu (576620), J. I. Rawlings (7601657), Hatziminaoglou, E, M. Vaccari, Madden, S., E. A. G. Solares (7601606), R. J. Ivison (7601480), Rizzo, D, M. Symeonidis, Lu, N, Tugwell, KE, Shupe, D. L., C. P. Pearson, D. Elbaz, D. Scott (2582779), Clements DL, Cava, A, P. Panuzzo, G. Mainetti, K. Isaak (7601618), Stevens, J., A. Amblard (7601534), L. Marchetti, Conley A, Vigroux, L., N. Castro-Rodríguez, Ibar, E, Smith, A. J., Wang L, A. Boselli, Vaccari, M, H. T. Nguyen, Madden S, Tugwell, K., M. Griffin (3933326), Isaak, K., Blain, A, V. Buat (7601558), E. Dwek, L. Levenson (7601624), Buat V, Ivison, R. J., Papageorgiou, Andreas, Vigroux, L, E. A. González Solares, Castro-Rodríguez N, Roseboom IG, Valtchanov, I., O'Halloran, B., Scott, Douglas, H. Aussel (7601543), Pohlen M, Lu N, A. Conley, A. Cava (7601567), Seymour, N., Dowell CD, R. J. Ivison, Wright, G., Mainetti, G, Zemcov, M, Pérez-Fournon, I., Rowan-Robinson, M., B. O’Halloran, G. Mainetti (7601630), Bock, J, P. Chanial, Levenson, L., Lagache, G, V. Arumugam, Ivison, RJ, Marchetti L, Xu, CK, V. Buat, Griffin, Matthew Joseph, Smith, A., H. Aussel, Panuzzo, P., L. Conversi, Dwek, E, M. Rowan-Robinson (7601669), I. Valtchanov (7589783), Amblard A, Xu, C. K., Marchetti, L., Nguyen, H. T., Cooray A, Solares EAG, Mainetti, G., Pohlen, Michael, M. J. Page, Xu, C., Tugwell, K. E., L. Vigroux (7582133), J. A. Stevens, Solares, E., Page MJ, O'Halloran B, Glenn, J., J. Bock   +338 more
core   +1 more source

Here Be SDRAGNs—Spiral Galaxies Hosting Large Double Radio Sources

The Astronomical Journal
We present a sample of large double radio sources hosted by spiral galaxies (spiral double radio active galactic nuclei, SDRAGNs). Candidates were initially selected through the Radio Galaxy Zoo project and subsequently refined using Sloan Digital Sky ...
Jean Tate, William C. Keel, Michael O’Keeffe, O. Ivy Wong, Heinz Andernach, Julie K. Banfield, Alexei Moiseev, Aleksandrina Smirnova, Arina Arshinova, Eugene Malygin, Elena Shablovinskaya, Roman Uklein, Stanislav Shabala, Ray Norris, Brooke D. Simmons, Rebecca Smethurst, Ivan Terentev, Chris Molloy, Victor Linares   +18 more
doaj   +1 more source

Radio Dim/Gamma-Ray Bright Active Galactic Nuclei

, 2018
Inside virtually every large galaxy lies a supermassive black hole, known as active galactic nuclei. An especially interesting subclass of active galactic nuclei are those that emit high energy radiation.
Bohney, Amanda
core  

VaDAR: Varstrometry for Dual AGN Using Radio Interferometry

The Astrophysical Journal
Binary and dual active galactic nuclei (AGNs) are an important observational tool for studying the formation and dynamical evolution of galaxies and supermassive black holes.
Emma Schwartzman, Tracy E. Clarke, Kristina Nyland, Nathan J. Secrest, Ryan W. Pfeifle, Henrique Schmitt, Shobita Satyapal, Barry Rothberg   +7 more
doaj   +1 more source