Results 11 to 20 of about 4,766,380 (340)

Limits on Fast Radio Bursts and other transient sources at 182 MHz using the Murchison Widefield Array [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
We present a survey for transient and variable sources, on time-scales from 28 s to ∼1 yr, using the Murchison Widefield Array (MWA) at 182 MHz. Down to a detection threshold of 0.285 Jy, no transient candidates were identified, making this the most ...
A. Rowlinson, M. Bell, T. Murphy, C. Trott, N. Hurley-Walker, S. Johnston, S. Tingay, D. Kaplan, D. Carbone, P. Hancock, L. Feng, A. Offringa, G. Bernardi, J. Bowman, F. Briggs, R. Cappallo, A. Deshpande, B. Gaensler, L. Greenhill, B. Hazelton, M. Johnston-Hollitt, C. Lonsdale, S. R. McWhirter, D. Mitchell, M. Morales, E. Morgan, D. Oberoi, S. Ord, T. Prabu, N. Shankar, K. Srivani, R. Subrahmanyan, R. Wayth, R. Webster, A. Williams, C. Williams   +35 more
semanticscholar   +8 more sources

Search and identification of transient and variable radio sources using MeerKAT observations: a case study on the MAXI J1820+070 field

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.
Antonia Rowlinson, Ralph A M J Wijers, Evangelia Tremou   +2 more
exaly   +4 more sources

A CNN and LSTM-based approach to classifying transient radio frequency interference [PDF]

Astronomy and Computing, 2018
Transient radio frequency interference (RFI) is detrimental to radio astronomy. It is particularly difficult to identify the sources of transient RFI, which is broadband and intermittent.
Daniel Czech, Michael Inggs
exaly   +2 more sources

Nasu 1.4 GHz Interferometer Transient Radio Source Survey and Improvement in Detection of Radio Sources

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.
Nobuo Matsumura, Masaya Kuniyoshi, Kazuhiro Takefuji, Kotaro Niinuma, Sumiko Kida, Akihiko Takeuchi, Kuniyuki Asuma, Tsuneaki Daishido   +7 more
exaly   +2 more sources

A search for variable and transient radio sources in the extended Chandra Deep Field South at 5.5 GHz [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We present a three epoch survey for transient and variables in the extended Chandra Deep Field South at 5.5 GHz with the Australia Telescope Compact Array.
Morag Bell, Morag Bell, M. Huynh, P. Hancock, P. Hancock, T. Murphy, B. Gaensler, D. Burlon, C. Trott, K. Bannister   +9 more
semanticscholar   +5 more sources

A radio survey of supersoft, persistent and transient X-ray sources in the Magellanic Clouds [PDF]

Monthly Notices of the Royal Astronomical Society, 1998
We present a radio survey of X-ray sources in the Large and Small Magellanic clouds with the Australia Telescope Compact Array at 6.3 and 3.5 cm. Specifically, we have observed the fields of five LMC and two SMC supersoft X-ray sources, the X-ray binaries LMC X-1, X-2, X-3 & X-4, the X-ray transient Nova SMC 1992, and the soft gamma-ray repeater ...
A K Tzioumis
exaly   +3 more sources

A new method for short-duration transient detection in radio images: searching for transient sources in MeerKAT data of NGC 5068

Monthly Notices of the Royal Astronomical Society
ABSTRACT Transient surveys are a vital tool in exploring the dynamic Universe, with radio transients acting as beacons for explosive and highly energetic astrophysical phenomena. However, performing commensal transient surveys using radio imaging can require a significant amount of computing power, data storage, and time.
Antonia Rowlinson, Ralph A M J Wijers, Patrick Woudt   +2 more
exaly   +7 more sources

Deep learning-based deconvolution for interferometric radio transient reconstruction [PDF]

Astronomy & Astrophysics, 2023
Radio astronomy is currently thriving with new large ground-based radio telescopes coming online in preparation for the upcoming Square Kilometre Array (SKA).
B. N. Chiche, J. Girard, J. Frontera-Pons, Arnaud Woiselle, J. Starck   +4 more
semanticscholar   +1 more source

Constraining the Nature of the 18 min Periodic Radio Transient GLEAM-X J162759.5-523504.3 via Multiwavelength Observations and Magneto-thermal Simulations [PDF]

Astrophysical Journal, 2022
We observed the periodic radio transient GLEAM-X J162759.5-523504.3 (GLEAM-X J1627) using the Chandra X-ray Observatory for about 30 ks on 2022 January 22–23, simultaneously with radio observations from the Murchison Widefield Array, MeerKAT, and the ...
N. Rea, F. Zelati, C. Dehman, N. Hurley-Walker, D. de Martino, A. Bahramian, D. Buckley, J. Brink, A. Kawka, J. Pons, D. Viganò, V. Graber, M. Ronchi, C. Araujo, A. Borghese, E. Parent, T. Galvin   +16 more
semanticscholar   +1 more source

Strongly Lensed Transient Sources: A Review [PDF]

Chinese Physics Letters, 2022
The past decades have witnessed a lot of progress in gravitational lensing with two main targets: stars and galaxies (with active galactic nuclei). The success is partially attributed to the continuous luminescence of these sources making the detection ...
K. Liao, M. Biesiada, Zong-Hong Zhu
semanticscholar   +1 more source