Results 41 to 50 of about 1,004,774 (284)
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 +16 more
doaj +1 more source
Radio Galaxy Zoo: discovery of a poor cluster through a giant wide-angle tail radio galaxy [PDF]
, 2016 We have discovered a previously unreported poor cluster of galaxies (RGZ-CL J0823.2+0333) through an unusual giant wide-angle tail radio galaxy found in the Radio Galaxy Zoo project.
J. K. Banfield +17 more
semanticscholar +1 more source
Extremely Red Radio Galaxies [PDF]
, 2001 At least half the radio galaxies at z>1 in the 7C Redshift Survey have extremely red colours (R-K>5), consistent with stellar populations which formed at high redshift (z>5). We discuss the implications of this for the evolution of massive galaxies in general and for the fraction of near-IR-selected EROs which host AGN, a result which is now ...
Willott, C, Rawlings, S, Blundell, K
openaire +3 more sources
A MATURE GALAXY CLUSTER AT z = 1.58 AROUND THE RADIO GALAXY 7C 1753+6311 [PDF]
, 2015 We report on the discovery of a z = 1.58 mature cluster around the high-redshift radio galaxy 7C 1753+6311, first identified in the Clusters Around Radio-loud active galactic nuclei survey.
E. Cooke +11 more
semanticscholar +1 more source
High-Redshift Radio Galaxies [PDF]
Highlights of Astronomy, 1995 Radio galaxies are unique cosmological probes. As with radio-loud quasars, the presence of luminous radio continuum and optical line emission enable radio galaxies to be observed and recognized at large distances, up to z = 4.2. However, unlike the situation for most quasars, their optical emission can be spatially resolved from the ground and studied ...
openaire +1 more source
Probing the evolution of galaxy clusters using SZ effect and non-thermal emission: First results from A1413 [PDF]
EPJ Web of ConferencesMass 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
Empirical Constraints on the Origin of Fast Radio Bursts: Volumetric Rates and Host Galaxy Demographics as a Test of Millisecond Magnetar Connection [PDF]
, 2017 The localization of the repeating fast radio burst (FRB) 121102 to a low-metallicity dwarf galaxy at z = 0.193, and its association with a luminous quiescent radio source, suggests the possibility that FRBs originate from magnetars, formed by the unusual
M. Nicholl +6 more
semanticscholar +1 more source
LOFAR discovery of a 700-kpc remnant radio galaxy at low redshift [PDF]
, 2015 Remnant radio galaxies represent the final "dying" phase of radio galaxy evolution, in which the jets are no longer active. Due to their rarity in flux limited samples and the difficulty of identification, this "dying" phase remains poorly understood and
M. Brienza +16 more
semanticscholar +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 +7 more
doaj +1 more source
Jet-driven outflows of ionized gas in the nearby radio galaxy 3C 293 [PDF]
, 2015 Fast outflows of gas, driven by the interaction between the radio jets and interstellar medium (ISM) of the host galaxy, are being observed in an increasing number of galaxies. One such example is the nearby radio galaxy 3C 293.
E. Mahony +7 more
semanticscholar +1 more source