Results 11 to 20 of about 134,801 (246)

Multiwavelength Observations of the Second Largest Known FR II Radio Galaxy, NVSS 2146+82 [PDF]

, 2000
We present multi-frequency VLA, multicolor CCD imaging, optical spectroscopy, and ROSAT HRI observations of the giant FR II radio galaxy NVSS 2146+82. This galaxy, which was discovered by the NRAO VLA Sky Survey (NVSS), has an angular extent of nearly 20'
Alan H. Bridle, Berkhuijsen E. M., Christopher Palma, Cotter G., Craig L. Sarazin, Fanaroff B. L., Franz E. Bauer, Green P. J., Lacy M., Longair M. S., Miller N. A., Mukai K., Parma P., Prestage R. M., Saripalli L., Steven R. Majewski, Strom R. G., Subrahmanyan R., Taylor D., William D. Cotton, Willis A. G.   +20 more
core   +2 more sources

Spectroscopic confirmation of a galaxy cluster associated with 7C1756+6520 at z=1.416 [PDF]

, 2010
We present spectroscopic follow-up of an overdensity of galaxies photometrically selected to be at 1 ...
A. Galametz, Best, C. De Breuck, D. Stern, Daddi, Doherty, Eckart, Eisenhardt, Eisenhardt, F. A. Harrison, Galametz, Galametz, Gawiser, Gladders, Hayashi, Hilton, J. Vernet, Kajisawa, Kodama, Kodama, Lacy, Lidman, Massey, Mullis, Oke, Overzier, Quadri, R. L. Griffith, Rosati, S. A. Stanford, Seymour, Stanford, Stanford, Stern, Stern, Stern, Venemans, Vikhlinin, Wilson   +38 more
core   +2 more sources

Probing gaseous halos of galaxies with radio jets [PDF]

, 2019
Reproduced with permission from Astronomy & Astrophysics. © 2019 ESOContext. Gaseous halos play a key role in understanding inflow, feedback, and the overall baryon budget in galaxies.
Hardcastle, Martin J., Krause, Martin G. H., Shabala, Stanislav S.   +2 more
core   +3 more sources

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

X-ray and Radio Observations of the Radio Relic Galaxy Clusters 1RXS J0603.3+4214 and RXC J1053.7+5453

Galaxies, 2018
We study two galaxy clusters with radio relics, 1RXS J0603.3+4214 and RXC J1053.7+5453, through X-ray and radio observations. Radio relics are diffuse non-thermal radio sources found in outskirts of galaxy clusters.
Motokazu Takizawa
doaj   +1 more source

A Nonrepeating Fast Radio Burst in a Dwarf Host Galaxy

The Astrophysical Journal, 2023
We present the discovery of an as yet nonrepeating fast radio burst (FRB), FRB 20210117A, with the Australian Square Kilometre Array Pathfinder (ASKAP), as a part of the Commensal Real-time ASKAP Fast Transients Survey.
Shivani Bhandari, Alexa C. Gordon, Danica R. Scott, Lachlan Marnoch, Navin Sridhar, Pravir Kumar, Clancy W. James, Hao Qiu, Keith W. Bannister, Adam T. Deller, Tarraneh Eftekhari, Wen-fai Fong, Marcin Glowacki, J. Xavier Prochaska, Stuart D. Ryder, Ryan M. Shannon, Sunil Simha   +16 more
doaj   +1 more source

Radio galaxy feedback in X-ray selected groups from COSMOS: the effect on the ICM [PDF]

, 2010
We quantify the importance of the mechanical energy released by radio-galaxies inside galaxy groups. We use scaling relations to estimate the mechanical energy released by 16 radio-AGN located inside X-ray detected galaxy groups in the COSMOS field.
A. Finoguenov, A. M. Koekemoer, A. Oklopčić, Bîrzan, Bîrzan, Condon, D. B. Sanders, D. Pierini, D. Thompson, De Young, Donahue, Drory, Dunkley, E. Schinnerer, Finoguenov, G. W. Pratt, G. Zamorani, Giodini, Gitti, H. Boehringer, Heinz, Ilbert, J. S. Kartaltepe, L. Bîrzan, Leauthaud, Lin, M. Salvato, Markevitch, Peterson, Pratt, Puchwein, R. Massey, Reiprich, S. Giodini, Salvato, Schinnerer, Scoville, Short, Skrutskie, Smolčić, Smolčić, Sun, V. Smolčić, Voit, Wright   +44 more
core   +4 more sources

A search for clusters at high redshift - III. Candidate H-alpha emitters and EROs in the PKS 1138-262 proto-cluster at z=2.16 [PDF]

, 2004
In this paper we present deep VLT multi wavelength imaging observations of the field around the radio galaxy PKS 1138-262 aimed at detecting and studying a (potential) proto-cluster centered at this radio source.
Abell, Bahcall, Bahcall, Beers, Bertin, Best, Bower, Bruzual, Buat, Bunker, Butcher, Carilli, Carilli, Cowie, Cowie, Daddi, Daddi, De Breuck, De Breuck, De Propris, Dey, Donahue, Dressler, Eggen, Eke, Elston, Elston, Feigelson, Fynbo, Fynbo, Fynbo, Gladders, Glazebrook, Hamuy, Hamuy, Hill, Hoeg, Hu, Iglesias-Páramo, Infante, Ivison, Jarvis, Kauffmann, Kauffmann, Kennicutt, Kennicutt, Kennicutt, Kron, Kurk, Kurk, Lacy, Lacy, Leitherer, Madau, McLure, Moorwood, Møller, Nakata, Oke, Ouchi, Pentericci, Pentericci, Pentericci, Pentericci, Pentericci, Pozzetti, Prentice, Refregier, Rhoads, Rhoads, Rosati, Rosati, Röttgering, Salpeter, Schlegel, Scodeggio, Small, Stanford, Stanford, Stanford, Steidel, Steidel, Stiavelli, Taylor, van Breugel, van der Werf, van Dokkum, van Dokkum, van Dokkum, Venemans, Yates   +90 more
core   +4 more sources

Probing the evolution of galaxy clusters using SZ effect and non-thermal emission: First results from A1413 [PDF]

EPJ Web of Conferences
Mass is the most fundamental property of galaxy clusters. However, measuring it is still a challenge. Calibrating mass from intracluster medium observables such as the Sunyaev-Zel’dovich (SZ) effect is subject to uncertainty and biases because of the ...
Pachchigar M., Perrott Y., Parashar T.
doaj   +1 more source

Subarcsecond-resolution Imaging of M51 with the International LOFAR Telescope

The Astrophysical Journal, 2023
We present an International LOFAR Telescope (ILT) subarcsecond-resolution image of the nearby galaxy M51 with a beam size of 0.″436 × 0.″366 and rms of 46 μ Jy. We compare this image with a European VLBI Network study of M51 and discuss the supernovae in
Deepika Venkattu, Peter Lundqvist, Miguel Pérez Torres, Leah Morabito, Javier Moldón, John Conway, Poonam Chandra, Cyril Tasse   +7 more
doaj   +1 more source