Search and identification of transient and variable radio sources using MeerKAT observations: a case study on the MAXI J1820+070 field [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Many transient and variable sources detected at multiple wavelengths are also observed to vary at radio frequencies. However, these samples are typically biased towards sources that are initially detected in wide-field optical, X-ray, or gamma-ray surveys.
A. Rowlinson +13 more
+10 more sources
Diverse origins for non-repeating fast radio bursts: Rotational radio transient sources and cosmological compact binary merger remnants [PDF]
Astronomy & Astrophysics, 2023 A large number of fast radio bursts (FRBs) detected with the CHIME telescope have enabled investigations of their energy distributions in different redshift intervals, incorporating the consideration of the selection effects of CHIME. As a result, we obtained a non-evolving energy function (EF) for the high-energy FRBs (HEFRBs) of energies E ≳ 2 × 1038
Ziliang Zhang, Yun-Wei Yu, Xiaofeng Cao
+6 more sources
Nasu 1.4 GHz Interferometer Transient Radio Source Survey and Improvement in Detection of Radio Sources [PDF]
Journal of Physics: Conference Series, 2006 We have surveyed 1.4GHz transient radio sources in Nasu Pulsar Observatory. To investigate such sources, both immediacy and accuracy are severely maintained. We have developed Data Transfer System and improved antenna control system. Now we have received the fringe data from transient radio source candidates.
N. Matsumura +7 more
openalex +2 more sources
VARIABLE AND TRANSIENT RADIO SOURCES IN THE FIRST SURVEY [PDF]
The Astrophysical Journal, 2011 A comprehensive search for variable and transient radio sources has been conducted using ~55,000 snapshot images of the FIRST survey. We present an analysis leading to the discovery of 1,627 variable and transient objects down to mJy levels over a wide range of timescales (few minutes to years).
Nithyanandan Thyagarajan +3 more
openalex +4 more sources
Radio variable and transient sources on minute time-scales in the ASKAP pilot surveys [PDF]
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We present results from a radio survey for variable and transient sources on 15-min time-scales, using the Australian SKA Pathfinder (ASKAP) pilot surveys. The pilot surveys consist of 505 h of observations conducted at around 1 GHz observing frequency, with a total sky coverage of 1476 deg2.
Yuanming Wang +14 more
+6 more sources
A transient radio source consistent with a merger-triggered core collapse supernova [PDF]
Science, 2021 Radio evidence of a stellar merger Core collapse supernovae occur when a massive star exhausts its fuel and explodes. Theorists have predicted that a similar explosion could occur if an evolved massive star merges with a compact companion, such as a neutron star. Dong et al . have identified a radio source
Dillon Dong +12 more
+9 more sources
TEMPORAL SMEARING OF TRANSIENT RADIO SOURCES BY THE INTERGALACTIC MEDIUM [PDF]
The Astrophysical Journal, 2013 The temporal smearing of impulsive radio events at cosmological redshifts probes the properties of the ionized Inter-Galactic Medium (IGM). We relate the degree of temporal smearing and the profile of a scattered source to the evolution of turbulent structure in the IGM as a function of redshift.
Jean‐Pierre Macquart, Jun Yi Koay
openalex +5 more sources
Identifying transient and variable sources in radio images [PDF]
Astronomy and Computing, 2019 With the arrival of a number of wide-field snapshot image-plane radio transient surveys, there will be a huge influx of images in the coming years making it impossible to manually analyse the datasets. Automated pipelines to process the information stored in the images are being developed, such as the LOFAR Transients Pipeline, outputting light curves ...
A. Rowlinson +18 more
openalex +5 more sources
A New Radio Detection of the Transient Bursting Source GCRT J1745−3009 [PDF]
The Astrophysical Journal, 2006 GCRT J1745-3009 is a transient bursting radio source located in the direction of the Galactic center, discovered by Hyman et al. in 330 MHz VLA observations from 2002 September 30-October 1. We have searched for bursting activity from GCRT J1745-3009 in nearly all of the available 330 MHz VLA observations of the Galactic center since 1989, as well as ...
Scott D. Hyman +5 more
openalex +2 more sources
A Search for Gamma-Ray Emission from Variable or Transient Galactic Radio Sources [PDF]
, 2013 2012 Fermi Symposium proceedings - eConf ...
C. R. Shrader, D. J. Macomb
openalex +3 more sources