Search for very-high-energy emission with HAWC from GW170817 event

Galván, Antonio; Fraija, N.; González, M. M.

doi:10.22323/1.358.0681

Cited by 6 publications

(6 citation statements)

References 21 publications

(26 reference statements)

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“…An impressive multiwavelength follow-up by a number of ground-and space-based observatories tracked its peculiar afterglow emission. No ∼TeV γ-rays were detected [196,198,199] for this relatively nearby (∼40 Mpc) event as the relativistic jet was observed off-axis, and none have been detected from other short-hard GRBs. Short-hard GRBs are detected more numerously at redshifts z < 1 with a mean redshift of z ≈ 0.5 in comparison to z ≈ 2 for the long-soft GRBs.…”

Section: Constraints On Shock Microphysical Parametersmentioning

confidence: 99%

Gamma-Ray Bursts at TeV Energies: Theoretical Considerations

Gill¹,

Granot²

2022

Preprint

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Section: Constraints On Shock Microphysical Parametersmentioning

confidence: 99%

Gamma-Ray Bursts at TeV Energies: Theoretical Considerations

Gill¹,

Granot²

2022

Preprint

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“…H. Abdalla 1 , H. Abe 2 , S. Abe 2 , A. Abusleme 3 , F. Acero 4 , A. Acharyya 5 , V. Acín Portella 6 , K. Ackley 7 , R. Adam 8 , C. Adams 9 , S.S. Adhikari 10 , I. Aguado-Ruesga 11 , I. Agudo 12 , R. Aguilera 13 , A. Aguirre-Santaella 14 , F. Aharonian 15 , A. Alberdi 12 , R. Alfaro 16 , J. Alfaro 3 , C. Alispach 17 , R. Aloisio 18 , R. Alves Batista 19 , J.-P. Amans 20 , L. Amati 21 , E. Amato 22 , L. Ambrogi 18 , G. Ambrosi 23 , M. Ambrosio 24 , R. Ammendola 25…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…A VHE EM follow-up of GW170817 was performed by H.E.S.S., that started the observations 5.3 hr after the GW event, but no EM counterpart was found [12]. A search for a possible VHE EM counterparts has been performed also with HAWC, whose observations started ∼ 8 hr after GW170817, but no significant gamma-ray emission was found [13].…”

Section: Introductionmentioning

confidence: 99%

Searching for very-high-energy electromagnetic counterparts to gravitational-wave events with the Cherenkov Telescope Array

Patricelli¹,

Carosi²,

Nava³

et al. 2021

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

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The detection of electromagnetic (EM) emission following the gravitational wave (GW) event GW170817 opened the era of multi-messenger astronomy with GWs and provided the first direct evidence that at least a fraction of binary neutron star (BNS) mergers are progenitors of short Gamma-Ray Bursts (GRBs). GRBs are also expected to emit very-high energy (VHE, > 100 GeV) photons, as proven by the recent MAGIC and H.E.S.S. observations. One of the challenges for future multi-messenger observations will be the detection of such VHE emission from GRBs in association with GWs. In the next years, the Cherenkov Telescope Array (CTA) will be a key instrument for the EM follow-up of GW events in the VHE range, owing to its unprecedented sensitivity, rapid response, and capability to monitor a large sky area via scan-mode operation. We present the CTA GW follow-up program, with a focus on the searches for short GRBs possibly associated with BNS mergers. We investigate the possible observational strategies and we outline the prospects for the detection of VHE EM counterparts to transient GW events.

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“…Thus, the flux upper limit was set for the first transit of the burst location after the trigger time [47,48]. Taking into account that the atypical multi-wavelength fluxes peaked at ∼ 120 days after the trigger time, a search for a TeV counterpart for much longer time periods than T 90 was performed, for details see [49]. The most constraining flux upper limit found was 3.37 × 10 −12 erg cm −2 s −1 for an energy range of 7 -170 TeV and the time period of 10 -110 days after the merger time.…”

Section: Grb 170817amentioning

confidence: 99%

“…[50] identified 13 GRBs with similar features to GRB 170817A. Then, the search for TeV emission within days was extended to the 2 other bursts (out of the 13) in the HAWC's field of view, see [49].…”

Section: Grb 170817amentioning

confidence: 99%

Search for very-high-energy photons from Gamma-ray bursts with HAWC

Fraija¹,

González²

2019

Preprint

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Detections of very-high-energy (VHE; > 100 GeV) photons from Gamma-ray bursts (GRBs) can provide fundamental information on the involved radiative processes, physical composition of the ejecta and acceleration processes. The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is the best gamma-ray instrument to study transient phenomena over a long period of time from 100 GeV to 100 TeV. Its large field of view and duty cycle (> 95%) allow it to search blindly for sources of GRBs and to follow up on external alerts from satellite instruments, such as Fermi and Swift, searching for their VHE counterpart. We present results from the ongoing GRB monitoring program and VHE upper limits of the latest interesting low-redshift and/or powerful bursts in HAWC's field of view: GRB 170206A, GRB 170817A, GRB 180720B and GRB 190114C.

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Search for very-high-energy emission with HAWC from GW170817 event

Cited by 6 publications

References 21 publications

Gamma-Ray Bursts at TeV Energies: Theoretical Considerations

Gamma-Ray Bursts at TeV Energies: Theoretical Considerations

Searching for very-high-energy electromagnetic counterparts to gravitational-wave events with the Cherenkov Telescope Array

Search for very-high-energy photons from Gamma-ray bursts with HAWC

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