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Related papers: The AARTFAAC 60 MHz transients survey

200 papers

A search for pulse signals was carried out in a new sky area included in the monitoring program for the search for pulsars and transients. Processing of several months data recorded in six frequency channels with a total bandwidth of 2.5…

High Energy Astrophysical Phenomena · Physics 2022-07-20 V. A. Samodurov , S. A. Tyul'bashev , M. O. Toropov , S. V. Logvinenko

Transient astronomical sources are typically powered by compact objects and usually signify highly explosive or dynamic events. While radio astronomy has an impressive record of obtaining high time resolution observations, usually it is…

Astrophysics · Physics 2009-11-10 S. D. Hyman , T. J. W. Lazio , N. E. Kassim , P. S. Ray , C. B. Markwardt , F. Yusef-Zadeh

In the last 15 years, 6 dedicated observation programs were carried out to monitor ~20 deg around the galactic center for transient activity above a few keV. Transient activity from low-mass X-ray binaries shows a strong preference for this…

Astrophysics · Physics 2007-05-23 Jean in 't Zand

Rotating radio transients (RRATs) are neutron stars that emit detectable radio bursts sporadically. They are statistically distinct in the neutron star population, in many observable properties, but by their nature are practically difficult…

High Energy Astrophysical Phenomena · Physics 2023-09-21 D. J. McKenna , E. F. Keane , P. T. Gallagher , J. McCauley

There are several unexplored regions of the short-duration radio transient phase space. One such unexplored region is the luminosity gap between giant pulses (from pulsars) and cosmologically located fast radio bursts (FRBs). The Survey for…

High Energy Astrophysical Phenomena · Physics 2020-02-05 Christopher D. Bochenek , Daniel L. McKenna , Konstantin V. Belov , Jonathon Kocz , Shri R. Kulkarni , James Lamb , Vikram Ravi , David Woody

Discovered in 2011 with LOFAR, the $15$ Jy low-frequency radio transient ILT J225347+862146 heralds a potentially prolific population of radio transients at $<100$ MHz. However, subsequent transient searches in similar parameter space…

High Energy Astrophysical Phenomena · Physics 2022-02-04 Yuping Huang , Marin M. Anderson , Gregg Hallinan , T. Joseph W. Lazio , Danny C. Price , Yashvi Sharma

We present multi-frequency and high-resolution studies of a sample of 24 radio transients sources discovered by comparing the NRAO VLA Sky Survey (NVSS) and Very Large Array Sky Survey (VLASS) surveys. All of them are characterized by a…

Astrophysics of Galaxies · Physics 2024-12-11 M. Kunert-Bajraszewska , A. Krauze , A. E. Kimball , L. Stawarz , P. Kharb , D. Stern , K. Mooley , K. Nyland , D. Koziel-Wierzbowska

We report on a re-analysis of archival data from the Very Large Array for a sample of ten long duration radio transients reported by Bower and others. These transients have an implied all-sky rate that would make them the most common radio…

High Energy Astrophysical Phenomena · Physics 2015-06-03 D. A. Frail , S. R. Kulkarni , E. O. Ofek , G. C. Bower , E. Nakar

The Amsterdam-ASTRON Radio Transients Facility And Analysis Center (AARTFAAC) all sky monitor is a sensitive, real time transient detector based on the Low Frequency Array (LOFAR). It generates images of the low frequency radio sky with…

Recent works have discovered two fast ($\approx 10$ ks) extragalactic X-ray transients in the Chandra Deep Field-South (CDF-S XT1 and XT2). These findings suggest that a large population of similar extragalactic transients might exist in…

High Energy Astrophysical Phenomena · Physics 2019-06-19 Guang Yang , W. N. Brandt , S. F. Zhu , F. E. Bauer , B. Luo , Y. Q. Xue , X. C. Zheng

We are developing a purely commensal survey experiment for fast (<5s) transient radio sources. Short-timescale transients are associated with the most energetic and brightest single events in the Universe. Our objective is to cover the…

The Weizmann Fast Astronomical Survey Telescope (W-FAST) is a 55cm optical survey telescope with a high cadence (25Hz) monitoring of the sky over a wide field of view (~7deg^2). The high frame rate allows detection of sub-second transients…

Instrumentation and Methods for Astrophysics · Physics 2021-05-26 Guy Nir , Eran O. Ofek , Sagi Ben-Ami , Noam Segev , David Polishook , Ilan Manulis

We report the detection of a potential cosmic radio transient source using the two stations of the Long Wavelength Array. The transient was detected on 18 October 2017 08:47 UTC near the celestial equator while reducing 10,240 hours of…

High Energy Astrophysical Phenomena · Physics 2020-06-29 S. S. Varghese , K. S. Obenberger , J. Dowell , G. B. Taylor

As a pilot study for the first all-sky radio survey at short wavelengths, we have observed 1216 sq. deg. of the southern sky at 18GHz (16mm) using a novel wide-band (3.4GHz bandwidth) analogue correlator on one baseline of the Australia…

We report on the methodology and first results from the Deep Lens Survey transient search. We utilize image subtraction on survey data to yield all sources of optical variability down to 24th magnitude. Images are analyzed immediately after…

The radio sky is poorly sampled for rapidly varying transients because of the narrow field-of-view of most imaging radio telescopes at cm and shorter wavelengths. The emergence of sensitive long wavelength observations with intrinsically…

We search for optical transient sources with durations of $\sim 0.1$ to $\sim 1.3$ s using a dataset obtained in the Organized Autotelescopes for Serendipitous Event Survey (OASES) observation campaign. Since the OASES observations were…

Instrumentation and Methods for Astrophysics · Physics 2021-03-03 Ko Arimatsu , Kohji Tsumura , Fumihiko Usui , Takafumi Ootsubo , Jun-ichi Watanabe

We have used the 150 MHz radio continuum survey (TGSS ADR) from the Giant Metrewave Radio Telescope (GMRT) to search for phase-averaged emission toward all well-localized radio pulsars north of -53deg Declination. We detect emission toward…

High Energy Astrophysical Phenomena · Physics 2016-10-05 D. A. Frail , P. Jagannathan , K. P. Mooley , H. T. Intema

We have performed targeted searches of known extragalactic transient events at millimetre wavelengths using nine seasons (2013--2021) of 98, 150, and 229\,GHz Atacama Cosmology Telescope (ACT) observations that mapped ${\sim}40$ per cent of…