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Peculiar Galaxies and Radio Sources

open access: yesScience, 1966
Pairs of radio sources which are separated by from 2° to 6° on the sky have been investigated. In a number of cases peculiar galaxies have been found approximately midway along a line joining the two radio sources. The central peculiar galaxies belong mainly to a certain class in the recently compiled Atlas of Peculiar Galaxies
openaire   +3 more sources

Superluminal Radio Sources [PDF]

open access: yesSymposium - International Astronomical Union, 1982
Several compact radio sources studied with VLBI show apparent transverse velocities much greater than the speed of light. This review is a summary of VLBI observations of these “superluminal” sources as of August 1981. The physical models proposed to explain this phenomenon are also discussed.
Cohen, M. H., Unwin, S. C.
openaire   +2 more sources

Updating the First CHIME/FRB Catalog of Fast Radio Bursts with Baseband Data

open access: yesThe Astrophysical Journal
In 2021, a catalog of 536 fast radio bursts (FRBs) detected with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) radio telescope was released by the CHIME/FRB Collaboration.
The CHIME/FRB Collaboration   +59 more
doaj   +1 more source

Radio Afterglows from Tidal Disruption Events: An Unbiased Sample from ASKAP RACS

open access: yesThe Astrophysical Journal
Late-time (∼a year) radio follow-up of optically discovered tidal disruption events (TDEs) is increasingly resulting in detections at radio wavelengths, and there is growing evidence for this late-time radio activity to be common to the broad class of ...
Akash Anumarlapudi   +25 more
doaj   +1 more source

Sources of the Radio Background Considered

open access: yes, 2009
We investigate different scenarios for the origin of the extragalactic radio background. The surface brightness of the background, as reported by the ARCADE 2 collaboration, is several times higher than that which would result from currently observed radio sources.
Singal, J.   +3 more
openaire   +4 more sources

Low-frequency, Wideband Study of an Active Repeater, FRB 20240114A, with the GMRT

open access: yesThe Astrophysical Journal
We report the detection of 167 bursts from an active repeater, FRB 20240114A, using the upgraded Giant Metrewave Radio Telescope. The observations were carried out over a frequency range of 300–750 MHz, and on four different dates over a period of 6 ...
U. Panda   +4 more
doaj   +1 more source

Radio Sources and Their Environment [PDF]

open access: yesHighlights of Astronomy, 2002
AbstractThe properties of radio sources in and outside of Abell clusters are reviewed. The properties of sources in and out of Abell clusters are shown to be surprisingly similar. However, sources in dense cluster cores do not fit this pattern and, as in Virgo A (M87), have a significant, sometimes dominant input of energy into the “cooling core ...
Frazer Owen, Mike Ledlow, Jean Eilek
openaire   +1 more source

Multiwavelength Observations of the Apparently Nonrepeating FRB 20250316A

open access: yesThe Astrophysical Journal
The physical origin of fast radio bursts (FRBs) remains uncertain. Although multiwavelength observations have been widely conducted, only Galactic FRB 20200428D is associated with an X-ray burst from the magnetar SGR J1935+2154.
Ye Li   +74 more
doaj   +1 more source

FAST Observations of FRB 20220912A: Burst Properties and Polarization Characteristics

open access: yesThe Astrophysical Journal, 2023
We report the observations of FRB 20220912A using the Five-hundred-meter Aperture Spherical radio Telescope. We conducted 17 observations totaling 8.67 hr and detected a total of 1076 bursts with an event rate up to 390 hr ^−1 .
Yong-Kun Zhang   +23 more
doaj   +1 more source

A Sample of Short-lived Galactic Radio Transients from ASKAP VAST

open access: yesThe Astrophysical Journal
Galactic radio transients (GRTs) are mysterious short-lived (∼days to months) radio transients that are quiet at all other wavelengths. Until now, roughly half a dozen such sources have been reported, predominantly towards the Galactic center.
Akash Anumarlapudi   +8 more
doaj   +1 more source

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