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

Fraija, N.; González, M. M.

doi:10.22323/1.358.0679

Cited by 1 publication

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References 39 publications

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“…Observations continued also at later times, extending to 120 days after the trigger. In the time period of 10-110 days after the merger time, the flux upper limit found was 3.37 × 10 −12 erg cm −2 s −1 in the energy range of 7-170 TeV [66].…”

Section: Follow-up Observations Of Grb 170817a By Hess Magic and Hawcmentioning

confidence: 82%

Gamma-ray Bursts at the Highest Energies

Nava

2021

Universe

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Emission from Gamma-ray bursts is thought to be powered mainly by synchrotron radiation from energetic electrons. The same electrons might scatter these synchrotron seed photons to higher (>10 GeV) energies, building a distinct spectral component (synchrotron self-Compton, SSC). This process is expected to take place, but its relevance (e.g., the ratio between the SSC and synchrotron emitted power) is difficult to predict on the basis of current knowledge of physical conditions at GRB emission sites. Very high-energy radiation in GRBs can be produced also by other mechanisms, such as synchrotron itself (if PeV electrons are produced at the source), inverse Compton on external seed photons, and hadronic processes. Recently, after years of efforts, very high-energy radiation has been finally detected from at least four confirmed long GRBs by the Cherenkov telescopes H.E.S.S. and MAGIC. In all four cases, the emission has been recorded during the afterglow phase, well after the end of the prompt emission. In this work, I give an overview, accessible also to non-experts of the field, of the recent detections, theoretical implications, and future challenges, with a special focus on why very high-energy observations are relevant for our understanding of Gamma-ray bursts and which long-standing questions can be finally answered with the help of these observations.

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Section: Follow-up Observations Of Grb 170817a By Hess Magic and Hawcmentioning

confidence: 82%

Gamma-ray Bursts at the Highest Energies

Nava

2021

Universe

View full text Add to dashboard Cite

show abstract

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

Cited by 1 publication

References 39 publications

Gamma-ray Bursts at the Highest Energies

Gamma-ray Bursts at the Highest Energies

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