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Related papers: Detecting Magnetar Giant Flares with MoonBEAM

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Magnetic flares and induced oscillations of magnetars (super-magnetized neutron stars) are promising sources of gravitational waves (GWs). We suggest that the GW emission, if any, would last longer than the observed X-ray quasi-periodic…

High Energy Astrophysical Phenomena · Physics 2015-04-23 Kazumi Kashiyama , Kunihito Ioka

We present the semi-analytical light curve modelling of 13 supernovae associated with gamma-ray bursts (GRB-SNe) along with two relativistic broad-lined (Ic-BL) SNe without GRBs association (SNe 2009bb and 2012ap), considering millisecond…

Flares in the X-ray afterglow of gamma-ray bursts (GRBs) share more characteristics with the prompt emission than the afterglow, such as pulse profile and contained fluence. As a result, they are believed to originate from late-time…

High Energy Astrophysical Phenomena · Physics 2018-06-06 Sarah L. Gibson , Graham A. Wynn , Benjamin P. Gompertz , Paul T. O'Brien

In order to discern the physical nature of many gamma-ray sources in the sky, we must look not only in spectral and spatial dimensions, but also understand their temporal variability. However, timing analysis of sources with a highly…

We advance a "Solar flare" model of magnetar activity, whereas a slow evolution of the magnetic field in the upper crust, driven by electron MHD (EMHD) flows, twists the external magnetic flux tubes, producing persistent emission, bursts…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Maxim Lyutikov

The merger of a double neutron star (NS-NS) binary may result in a rapidly rotating massive NS with an extremely strong magnetic field (i.e., a millisecond magnetar). In this case, the magnetic spin-down of the NS remnant provides an…

High Energy Astrophysical Phenomena · Physics 2017-07-06 He Gao , Bing Zhang , Hou-Jun Lü , Ye Li

Gamma-ray bursts (GRBs) are bright extragalactic flashes of gamma-ray radiation and briefly the most energetic explosions in the Universe. Their catastrophic origin (the merger of compact objects or the collapse of massive stars) drives the…

In this paper, we revisit the scenario that an internal gradual magnetic dissipation takes place within the wind from a newborn millisecond magnetar can be responsible for gamma-ray burst production. We show that a combination of two…

High Energy Astrophysical Phenomena · Physics 2018-11-07 Di Xiao , Zong-Kai Peng , Bin-Bin Zhang , Zi-Gao Dai

I summarize the recent advances in our understanding of the Soft Gamma Repeaters: in particular their spin behavior, persistent emission and hyper-Eddington outbursts. The giant flares on 5 March 1979 and 27 August 1998 provide compelling…

Astrophysics · Physics 2007-05-23 Christopher Thompson

A fast radio burst (FRB) localized to a globular cluster (GC) challenges FRB models involving ordinary young magnetars. In this paper, we examine the rapid spindown millisecond neutron star (NS) scenario, which favours the dynamic…

High Energy Astrophysical Phenomena · Physics 2023-09-13 Dongzi Li , Ue-Li Pen

It is generally recognized that the electromagnetic multipolar emission from magnetars can be used to explain radiation from Soft Gamma Repeaters (SGRs) or Anomalous X-ray Pulsars (AXPs), but they have little impact on the spindown of…

High Energy Astrophysical Phenomena · Physics 2024-10-21 Yu Wang , Rahim Moradi , Liang Li

Fast radio bursts (FRBs) are short pulses observed in radio frequencies usually originating from cosmological distances. The discovery of FRB 200428 and its X-ray counterpart from the Galactic magnetar SGR J1935+2154 suggests that at least…

High Energy Astrophysical Phenomena · Physics 2022-11-08 Mingyu Ge , Yuan-Pei Yang , Fangjun Lu , Shiqi Zhou , Long Ji , Shuangnan Zhang , Bing Zhang , Liang Zhang , Pei Wang , Kejia Lee , Weiwei Zhu , Jian Li , Xian Hou , Qiao-Chu Li

In theory, burst activity of the magnetar can lead to the formation of fireballs trapped by the magnetic field and corotating with the star. However, the smoking-gun observational evidence of the fireball is elusive. We envisage that the…

SGR J1550-5418 (previously known as AXP 1E 1547.0-5408 or PSR J1550-5418) went into three active bursting episodes in 2008 October and in 2009 January and March, emitting hundreds of typical Soft Gamma Repeater (SGR) bursts in soft…

Recent rapid localizations of short, hard gamma-ray bursts (GRBs) by the Swift and HETE satellites have led to the observation of the first afterglows and the measurement of the first redshifts from this type of burst. Detection of >100 GeV…

SGR 0526-66 was the first soft gamma-ray repeater (SGR) from which a giant flare was detected in March 1979, suggesting the existence of magnetars, i.e. neutron stars powered by the decay of their extremely strong magnetic field. Since…

High Energy Astrophysical Phenomena · Physics 2009-11-10 A. Tiengo , P. Esposito , S. Mereghetti , G. L. Israel , L. Stella , R. Turolla , S. Zane. N. Rea , D. Götz , M. Feroci

We report the results on the short gamma-ray burst GRB 241107A, obtained with the IBIS instrument on board the INTEGRAL satellite. The burst had a duration of about 0.2 s, a fluence of $8 \times 10^{-7}$ erg cm-2 in the 20 keV-10 MeV range…

The X-ray flares have usually been ascribed to long-lasting activities of the central engine of gamma-ray bursts (GRBs), e.g., fallback accretion. The GRB X-ray plateaus, however, favor a millisecond magnetar central engine. The fallback…

High Energy Astrophysical Phenomena · Physics 2022-01-19 Tian-Ci Zheng , Long Li , Le Zou , Xiang-Gao Wang

A significant fraction of the Long Gamma-ray Bursts (LGRBs) in the Swift sample have a plateau phase showing evidence of ongoing energy injection. We suggest that many Short Gamma-ray Bursts (SGRBs) detected by the Swift satellite also show…

High Energy Astrophysical Phenomena · Physics 2015-06-12 A. Rowlinson , P. T. O'Brien , B. D. Metzger , N. R. Tanvir , A. J. Levan

Short gamma-ray bursts (GRBs) are the aftermath of compact binary mergers involving neutron stars. If the merger remnant is a millisecond magnetar instead of a black hole, a significant proportion of the rotational energy deposited to the…

High Energy Astrophysical Phenomena · Physics 2024-01-23 Ankur Ghosh , C. S. Vaishnava , L. Resmi , Kuntal Misra , K. G. Arun , Amitesh Omar , N. K. Chakradhari