An X-ray burst from a magnetar enlightening the mechanism of fast radio bursts

Tavani, M.; Casentini, C.; Ursi, A.; Verrecchia, F.; Addis, A.; Antonelli, L. A.; Argan, A.; Barbiellini, G.; Baroncelli, Leonardo; Bernardi, G.; Bianchi, G.; Bulgarelli, A.; Caraveo, P. A.; Cardillo, M.; Cattaneo, P. W.; Chen, A. W.; Costa, E.; Monte, E. Del; Cocco, G. Di; Persio, G. Di; Donnarumma, I.; Evangelista, Y.; Feroci, M.; Ferrari, A.; Fioretti, V.; Fuschino, F.; Galli, M.; Gianotti, F.; Giuliani, A.; Labanti, C.; Lazzarotto, F.; Lipari, P.; Longo, F.; Lucarelli, F.; Magro, Alessio; Marisaldi, M.; Mereghetti, S.; Morelli, E.; Morselli, A.; Naldi, G.; Pacciani, L.; Parmiggiani, N.; Paoletti, F.; Pellizzoni, A.; Perri, M.; Perotti, F.; Piano, G.; Picozza, P.; Pilia, M.; Pittori, C.; Puccetti, S.; Pupillo, G.; Rapisarda, M.; Rappoldi, A.; Rubini, A.; Setti, G.; Soffitta, P.; Trifoglio, M.; Trois, A.; Vercellone, S.; Vittorini, V.; Giommi, P.; D’Amico, F.

doi:10.1038/s41550-020-01276-x

Cited by 155 publications

(109 citation statements)

References 50 publications

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“…The local nature makes measurements of the object and its environment much easier and with much greater detail. In fact, a linkage between the production of soft gamma bursts in this source and FRBs is naturally suggested: the same two events as the FRBs, with the appropriate delay due to dispersion by interstellar electrons, were detected by γray instruments [24][25][26][27][28] (though some authors suggest that different source types may be responsible for these vs extragalactic FRBs [29]).…”

Section: Application To Sgr1935 + 2154mentioning

confidence: 99%

Distinguishing time clustering of astrophysical bursts

2021

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Many astrophysical bursts can recur, and their time series structure or pattern could be closely tied to the emission and system physics. While analysis of periodic events is well established, some sources, e.g., some fast radio bursts and soft gamma-ray emitters, are suspected of more subtle and less explored periodic windowed behavior: the bursts themselves are not periodic, but the activity only occurs during periodic windows. We focus here on distinguishing periodic windowed behavior from merely clustered events through time clustering analysis, using techniques analogous to spatial clustering, demonstrating methods for identifying and characterizing the behavior. An important aspect is accounting for the "curious incident of the dog in the night time"-lack of bursts carries information. As a worked example, we analyze six years of data from the soft gamma repeater SGR1935 þ 2154, deriving a window period of 231 days and 55% duty cycle.

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Section: Application To Sgr1935 + 2154mentioning

confidence: 99%

Distinguishing time clustering of astrophysical bursts

2021

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“…The radio energy released under the assumption of an isotropic emission of the bursts at 6.6 kpc is about 10 34 − 10 35 erg, just below the low end of the extragalactic FRB distribution observed so far. After removing the radio dispersion delay, the timing of the first radio burst appears to line up very well with one of the bright X-ray bursts seen by AGILE [14], Konus-Wind [15], INTEGRAL [16] and Insight-HXMT [17,18]. This coincidence is the first evidence that magnetars are linked to FRBs, or at least a subset of (repeating) bursts.…”

Section: Introductionmentioning

confidence: 64%

“…Observation of SGR1935+2154 with H.E.S.S. Figure 1: SGR 1935+2154 observations with gamma-ray, X-ray optical and radio telescopes.This plot presents X-ray bursts from the source detected by Fermi-GBM [20,21], Swift-BAT [22], NICER/XTI, NuSTAR [23], INTEGRAL [16], HXMT [17,24], AGILE [14,25] and Konus-Wind [15]; radio burst from CHIME [12], STARE2 [26], FAST [13] and the Westerbork (RT1), Onsala (25m), Toruń (30m) dishes [27]. Plot also shows the H.E.S.S., FAST, BOOTES and LCOGT observations [28] with upper limits from all shown instruments.…”

Section: Pos(icrc2021)777mentioning

confidence: 99%

Observation of burst activity from SGR1935+2154 associated to first galactic FRB with H.E.S.S.

Kostunin¹,

Abdalla²,

Aharonian³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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Fast radio bursts (FRB) are enigmatic powerful single radio pulses with durations of several milliseconds and high brightness temperatures suggesting coherent emission mechanism. For the time being a number of extragalactic FRBs have been detected in the high-frequency radio band including repeating ones. The most plausible explanation for these phenomena is magnetar hyperflares. The first observational evidence of this scenario was obtained in April 2020 when an FRB was detected from the direction of the Galactic magnetar and soft gamma repeater SGR1935+2154. The FRB was preceded with a number of soft gamma-ray bursts observed by Swift-BAT satellite, which triggered the follow-up program of the H.E.S.S. imaging atmospheric Cherenkov telescopes (IACTs). H.E.S.S. has observed SGR1935+2154 over a 2 hour window few hours prior to the FRB detection by STARE2 and CHIME. The observations overlapped with other X-ray bursts from the magnetar detected by INTEGRAL and Swift-BAT, thus providing first observations of a magnetar in a flaring state in the very-high energy domain. We present the analysis of these observations, discuss the obtained results and prospects of the H.E.S.S. follow-up program for soft gamma repeaters and anomalous X-ray pulsars.

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“…The AGILE Team published several papers where part of the results are obtained using the RTA pipelines presented in this contribution, as a support system during the data analysis. The main papers are: [13], [14], [15], [16] and [17].…”

Section: Results Obtained With the Agile Rta Pipelinesmentioning

confidence: 99%

The AGILE real-time analysis pipelines in the multi-messenger era

Parmiggiani¹,

Bulgarelli²,

Ursi³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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In the multi-messenger era, space and ground-based observatories usually develop real-time analysis (RTA) pipelines to rapidly detect transient events and promptly share information with the scientific community to enable follow-up observations. These pipelines can also react to science alerts shared by other observatories through networks such as the Gamma-Ray Coordinates Network (GCN) and the Astronomer's Telegram (ATels). AGILE is a space mission launched in 2007 to study X-ray and gamma-ray phenomena. This contribution presents the technologies used to develop two types of AGILE pipelines using the RTApipe framework and an overview of the main scientific results. The first type performs automated analyses on new AGILE data to detect transient events and automatically sends AGILE Notices to the GCN network. Since May 2019, this pipeline sent more than 40 automated Notices with a few minutes delay since data arrival. The second type of pipeline reacts to multi-messenger external alerts (neutrinos, gravitational waves, GRBs, and other transients) received through the GCN network and performs hundreds of analyses searching for counterparts in all AGILE instruments' data. The AGILE Team uses these pipelines to perform fast follow-up of science alerts reported by other facilities which resulted in the publishing of several ATels and GCN Circulars.

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An X-ray burst from a magnetar enlightening the mechanism of fast radio bursts

Cited by 155 publications

References 50 publications

Distinguishing time clustering of astrophysical bursts

Distinguishing time clustering of astrophysical bursts

Observation of burst activity from SGR1935+2154 associated to first galactic FRB with H.E.S.S.

The AGILE real-time analysis pipelines in the multi-messenger era

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