Results 31 to 40 of about 93,758 (219)

Periodic Bursts of Coherent Radio Emission from an Ultracool Dwarf [PDF]

, 2007
We report the detection of periodic (p = 1.96 hours) bursts of extremely bright, 100% circularly polarized, coherent radio emission from the M9 dwarf TVLM 513-46546. Simultaneous photometric monitoring observations have established this periodicity to be
A. Antonova, A. Golden, Benz A. O., C. Lane, F. J. Vrba, G. Hallinan, J. G. Doyle, Pritchett P. L., Pritchett P. L., R. P. Boyle, R. T. Zavala, S. Bourke, W. F. Brisken, Winglee R. W.   +13 more
core   +2 more sources

Observations of Solar Type III radio bursts by Cassini/RPWS experiment [PDF]

Advances in Radio Science, 2020
In this study, we report on the occurrence of solar Type III radio bursts recorded by radio and plasma wave experiment (RPWS) experiment onboard Cassini spacecraft.
M. Y. Boudjada, A. Abou el-Fadl, P. H. M. Galopeau, E. Al-Haddad, H. Lammer   +4 more
doaj   +1 more source

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

On the Origin of the Dark Gamma-Ray Bursts [PDF]

, 2005
The origin of dark bursts - i.e. that have no observed afterglows in X-ray, optical/NIR and radio ranges - is unclear yet. Different possibilities - instrumental biases, very high redshifts, extinction in the host galaxies - are discussed and shown to be
Bagoly, Z., Balazs, L. G., Borgonovo, L., Horvath, I., Klose, S., Larsson, S., Meszaros, A., Ryde, F.   +7 more
core   +4 more sources

The physics of fast radio bursts [PDF]

Science China Physics, Mechanics & Astronomy, 2021
In 2007, a very bright radio pulse was identified in the archival data of the Parkes Telescope in Australia, marking the beginning of a new research branch in astrophysics. In 2013, this kind of millisecond bursts with extremely high brightness temperature takes a unified name, fast radio burst (FRB).
Xiao, Di, Wang, Fayin, Dai, Zigao
openaire   +2 more sources

Afterglow upper limits for four short duration, hard spectrum gamma-ray bursts [PDF]

, 2001
We present interplanetary network localization, spectral, and time history information for four short-duration, hard spectrum gamma-ray bursts, GRB000607, 001025B, 001204, and 010119.
A., A., A., BERGER, C., CASTRO CERN, CASTRO-TIRADO, CLINE, D., D. A., D. H., E., E., E., F., FEROCI, FRAIL, FREDERIKS, FRONTERA F., G., G., GOLENETSKII, GUIDORZI, H.-S., HARTMANN, HENDEN, HURLEY, J., J., J. M., K., LEVINE, M., M., MASETTI, MAZETS, MOILANEN, MONTANARI, MORRISON, N., OKSANEN, P. A., PARK, PRICE, PROCHASKA, S., S. E., T., TROMBKA, WILLIAMS   +49 more
core   +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

A sample of low energy bursts from FRB 121102 [PDF]

, 2019
We present 41 bursts from the first repeating fast radio burst discovered (FRB 121102). A deep search has allowed us to probe unprecedentedly low burst energies during two consecutive observations (separated by one day) using the Arecibo telescope at 1.4
Chatterjee, S., Cordes, J. M., Gourdji, K., Hessels, J. W. T., Michilli, D., Seymour, A., Spitler, L. G.   +6 more
core   +2 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