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We present multi-satellite observations indicating a strong correlation between large amplitude radiation belt whistler-mode waves and relativistic electron precipitation. On separate occasions during the Wind petal orbits and STEREO…

Pulsar surveys offer one of the few opportunities to monitor even a small fraction (~0.00001) of the radio sky for impulsive burst-like events with millisecond durations. In analysis of archival survey data, we have discovered a 30-Jy…

Astrophysics · Physics 2009-11-13 D. R. Lorimer , M. Bailes , M. A. McLaughlin , D. J. Narkevic , F. Crawford

Our high-time-resolution observations reveal that individual main pulses from the Crab pulsar contain one or more short-lived microbursts. Both the energy and duration of bursts measured above 1 GHz can vary dramatically in less than a…

High Energy Astrophysical Phenomena · Physics 2015-05-19 Jared H. Crossley , Jean A. Eilek , Timothy H. Hankins , Jeff S. Kern

Microturbulence, i.e. enhanced fluctuations of plasma density, electric and magnetic fields, is of great interest in astrophysical plasmas, but occurs on spatial scales far too small to resolve by remote sensing, e.g., at ~ 1-100 cm in the…

Astrophysics · Physics 2009-11-13 Gelu M. Nita , Dale E. Gary , Gregory D. Fleishman

Earth's magnetotail, a night-side region characterized by stretched magnetic field lines and strong plasma currents, is the primary site for the release of magnetic field energy and its transformation into plasma heating and kinetic energy…

X-ray bursts from compact stars is believed to be due to type I thermonuclear processes which are short lived, typically ~ 10 to 100 s. There are some low mass X-ray binaries (LMXB) like 4U 1820-30, 4U 1636-53, KS 1731-260 and Serpens X-1,…

Astrophysics · Physics 2014-10-13 Monika Sinha , Mira Dey , Subharthi Ray , Jishnu Dey

The minimum variation timescale (MVT) of soft gamma-ray repeaters can be an important probe to estimate the emission region in pulsar-like models, as well as the Lorentz factor and radius of the possible relativistic jet in gamma-ray burst…

We have performed searches for isolated flares and for steady flickering in Gamma Ray Burst light curves on the microsecond to millisecond time scales. Two bursts out of our sample of 20 revealed four isolated flares with time scales from…

Astrophysics · Physics 2009-09-25 Katharine C. Walker , Bradley E. Schaefer , E. E. Fenimore

We report on magnetic field emergences covering significant areas of exploding granules. The balloon-borne mission SUNRISE provided high spatial and temporal resolution images of the solar photosphere. Continuum images, longitudinal and…

Fast Radio Bursts are millisecond bursts of radio radiation at frequencies of about 1 GHz, recently discovered in pulsar surveys. They have not yet been definitively identified with any other astronomical object or phenomenon. The bursts…

High Energy Astrophysical Phenomena · Physics 2016-05-10 J. I. Katz

Fast radio bursts (FRBs) are recently discovered mysterious single pulses of radio emission, mostly coming from cosmological distances ($\sim 1$ Gpc). Their short duration, $\sim 1$ ms, and large luminosity evidence coherent emission. I…

High Energy Astrophysical Phenomena · Physics 2021-03-02 Yuri Lyubarsky

We briefly review main observational properties of fast radio bursts (FRBs) and discuss two most popular hypothesis for the explanation of these enigmatic intense millisecond radio flashes. FRBs most probably originate on extragalactic…

High Energy Astrophysical Phenomena · Physics 2018-08-08 S. B. Popov , K. A. Postnov , M. S. Pshirkov

Fast radio bursts are mysterious millisecond-duration transients prevalent in the radio sky. Rapid accumulation of data in recent years has facilitated an understanding of the underlying physical mechanisms of these events. Knowledge gained…

High Energy Astrophysical Phenomena · Physics 2020-11-11 Bing Zhang

Solar small scale microwave bursts (SMBs), including microwave dot, spike, and narrow band type III bursts, are characterized with very short timescales, narrow frequency bandwidth, and very high brightness temperatures. Based on…

Solar and Stellar Astrophysics · Physics 2015-06-16 Baolin Tan

We discuss possible association of fast radio bursts (FRBs) with supergiant pulses emitted by young pulsars (ages $\sim$ tens to hundreds of years) born with regular magnetic field but very short -- few milliseconds -- spin periods. FRBs…

High Energy Astrophysical Phenomena · Physics 2016-08-17 Maxim Lyutikov , Lukasz Burzawa , Sergei B. Popov

Searches for transient astrophysical sources often reveal unexpected classes of objects that are useful physical laboratories. In a recent survey for pulsars and fast transients we have uncovered four millisecond-duration radio transients…

Since the discovery of the accreting millisecond pulsar XTE J1814-338 a total of 27 thermonuclear bursts have been observed from the source with the Proportional Counter Array (PCA) onboard the Rossi X-ray Timing Explorer (RXTE).…

Astrophysics · Physics 2009-11-10 Tod E. Strohmayer , Craig B. Markwardt , Jean H. Swank , Jean in 't Zand

The field of fast radio bursts (FRBs) has entered the age of fine characterization as observational results from different radio telescopes become more and more abundant. The large FRB sample is suitable for a statistical study. There is an…

High Energy Astrophysical Phenomena · Physics 2023-12-25 Di Xiao , Zi-Gao Dai , Xue-Feng Wu

Fast Radio Bursts (FRBs) are highly energetic transient events with duration of order of microseconds to milliseconds and of unknown origin. They are known to lie at cosmological distances, through localisation to host galaxies. Recently,…

High Energy Astrophysical Phenomena · Physics 2021-12-22 Nayab Gohar , Chris Flynn

Gamma-ray bursts (GRBs) are exceptionally bright electromagnetic events occurring daily on the sky. The prompt emission is dominated by X-/$\gamma$-rays. Since their discovery over 50 years ago, GRBs are primarily studied through spectral…

Instrumentation and Methods for Astrophysics · Physics 2018-09-12 M. Pearce , L. Eliasson , N. Kumar Iyer , M. Kiss , R. Kushwah , J. Larsson , C. Lundman , V. Mikhalev , F. Ryde , T. -A. Stana , H. Takahashi , F. Xie
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