Results 51 to 60 of about 11,061 (299)

Limits on Fast Radio Burst–like Counterparts to Gamma-Ray Bursts Using CHIME/FRB

The Astrophysical Journal, 2023
Fast radio bursts (FRBs) are a class of highly energetic, mostly extragalactic radio transients lasting for ∼milliseconds. While over 600 FRBs have been published so far, their origins are presently unclear, with some theories for extragalactic FRBs ...
Alice P. Curtin, Shriharsh P. Tendulkar, Alexander Josephy, Pragya Chawla, Bridget Andersen, Victoria M. Kaspi, Mohit Bhardwaj, Tomas Cassanelli, Amanda Cook, Fengqiu Adam Dong, Emmanuel Fonseca, B. M. Gaensler, Jane F. Kaczmarek, Adam E. Lanmnan, Calvin Leung, Aaron B. Pearlman, Emily Petroff, Ziggy Pleunis, Masoud Rafiei-Ravandi, Scott M. Ransom, Kaitlyn Shin, Paul Scholz, Kendrick Smith, Ingrid Stairs   +23 more
doaj   +1 more source

Radio Astronomical Tools for the Study of Solar Energetic Particles II.Time-Extended Acceleration at Subrelativistic and Relativistic Energies

Frontiers in Astronomy and Space Sciences, 2021
Solar energetic particle (SEP) events are commonly separated in two categories: numerous “impulsive” events of relatively short duration, and a few “gradual” events, where SEP-intensities may stay enhanced over several days at energies up to several tens
Karl-Ludwig Klein
doaj   +1 more source

"Slow" radio bursts from galactic magnetars?

, 2021
Recently, one fast radio burst (FRB), FRB 200428, was detected from the Galactic magnetar soft gamma-ray repeater (SGR) J1935+2154 during one X-ray burst. This suggests that magnetars can make FRBs.
Zhang, Bing
core   +1 more source

Galactic and cosmological fast radio bursts as scaled-up solar radio bursts [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Fast radio bursts (FRBs) are bright milliseconds radio transients with large dispersion measures. Recently, FRB 200428 was detected in temporal coincidence with a hard X-ray flare from the Galactic magnetar SGR 1935+2154, which supports that at least some FRBs are from magnetar activity.
F Y Wang, G Q Zhang, Z G Dai
openaire   +2 more sources

The Statistical Polarization Properties of Coherent Curvature Radiation by Bunches: Application to Fast Radio Burst Repeaters

The Astrophysical Journal, 2023
Fast radio bursts (FRBs) are extragalactic radio transients with a millisecond duration and an extremely high brightness temperature. Very recently, some highly circularly polarized bursts were found in a repeater, FRB 20201124A. The significant circular
Ze-Nan Liu, Wei-Yang Wang, Yuan-Pei Yang, Zi-Gao Dai   +3 more
doaj   +1 more source

The host galaxy of a fast radio burst [PDF]

Nature, 2016
In recent years, millisecond-duration radio signals originating in distant galaxies appear to have been discovered in the so-called fast radio bursts. These signals are dispersed according to a precise physical law and this dispersion is a key observable quantity, which, in tandem with a redshift measurement, can be used for fundamental physical ...
Keane, E., Johnston, S., Bhandari, S., Barr, E., Bhat, N., Burgay, M., Caleb, M., Flynn, C., Jameson, A., Kramer, M., Petroff, E., Possenti, A., Van Straten, W., Bailes, M., Burke-Spolaor, S., Eatough, R., Stappers, B., Totani, T., Honma, M., Furusawa, H., Hattori, T., Morokuma, T., Niino, Y., Sugai, H., Terai, T., Tominaga, N., Yamasaki, S., Yasuda, N., Allen, R., Cooke, J., Jencson, J., Kasliwal, M., Kaplan, D., Tingay, Steven, Williams, A., Wayth, Randall, Chandra, P., Perrodin, D., Berezina, M., Mickaliger, M., Bassa, C.   +40 more
openaire   +6 more sources

HIGH-FREQUENCY CUTOFF IN TYPE III BURSTS

Odessa Astronomical Publications, 2016
In this article we report about a group of solar bursts with high-frequency cutoff, observed on 19 August of 2012 near 8:23 UT, simultaneously by three different radio telescopes: the Ukrainian decameter radio telescope (8-33 MHz), the French Nançay ...
A. A. Stanislavsky, A. A. Konovalenko, Ya. S. Volvach, A. A. Koval   +3 more
doaj   +1 more source

ON ASSOCIATING FAST RADIO BURSTS WITH AFTERGLOWS [PDF]

The Astrophysical Journal Letters, 2016
ABSTRACT A radio source that faded over six days, with a redshift of z ≈ 0.5 host, has been identified by Keane et al. as the transient afterglow to a fast radio burst (FRB 150418). We report follow-up radio and optical observations of the afterglow candidate and find a source that is consistent with an active galactic nucleus.
H. K. Vedantham, V. Ravi, K. Mooley, D. Frail, G. Hallinan, S. R. Kulkarni   +5 more
openaire   +3 more sources

Are There Multiple Populations of Fast Radio Bursts? [PDF]

The Astrophysical Journal Letters, 2018
Abstract The repeating FRB 121102 (the “repeater”) shows repetitive bursting activities and was localized in a host galaxy at z = 0.193. On the other hand, despite dozens of hours of telescope time spent on follow-up observations, no other fast radio bursts (FRBs) have been observed to repeat.
Divya Palaniswamy, Ye Li, Bing Zhang
openaire   +2 more sources

The Multiwavelength Counterparts of Fast Radio Bursts [PDF]

The Astrophysical Journal, 2020
Abstract The engines that produce extragalactic fast radio bursts (FRBs), and the mechanism by which the emission is generated, remain unknown. Many FRB models predict prompt multiwavelength counterparts, which can be used to refine our knowledge of these fundamentals of the FRB phenomenon. However, several previous targeted searches for
Ge Chen, Vikram Ravi, Wenbin Lu
openaire   +3 more sources