Pith. sign in

REVIEW 6 cited by

Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2106.02510 v1 pith:GBTEGEHM submitted 2021-06-04 astro-ph.HE

H.E.S.S. Collaboration This is my paper · ORCID
classification astro-ph.HE
keywords afterglowx-raygammagamma-raysimilarspectrumemissionenergy
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

Gamma-ray bursts (GRBs), which are bright flashes of gamma rays from extragalactic sources followed by fading afterglow emission, are associated with stellar core collapse events. We report the detection of very-high-energy (VHE) gamma rays from the afterglow of GRB 190829A, between 4 and 56 hours after the trigger, using the High Energy Stereoscopic System (H.E.S.S.). The low luminosity and redshift of GRB 190829A reduce both internal and external absorption, allowing determination of its intrinsic energy spectrum. Between energies of 0.18 and 3.3 tera-electron volts, this spectrum is described by a power law with photon index of 2.07 $\pm$ 0.09, similar to the x-ray spectrum. The x-ray and VHE gamma-ray light curves also show similar decay profiles. These similar characteristics in the x-ray and gamma-ray bands challenge GRB afterglow emission scenarios.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The ultra-fast afterglow of GRB 260226A

    astro-ph.HE 2026-07 conditional novelty 7.0 of 10

    The bolometric 10 keV-1 GeV afterglow of GRB 260226A decays as t^-1.5 then steepens to t^-2.8, requiring external inverse Compton emission from a pair-loaded wind rather than standard synchrotron.

  2. Ultra-long simulations of collisionless relativistic shocks in front-comoving frame: evidence for a steady state and its properties

    astro-ph.HE 2026-07 conditional novelty 7.0 of 10

    In ultra-long front-comoving PIC simulations of relativistic pair shocks, the downstream region reaches a steady state controlled only by the upstream temperature, and Fermi acceleration saturates with no power-law ta...

  3. Gamma-ray burst progenitors revisited

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    About 30–40% of long gamma-ray bursts at z<0.3 lack supernova emission and likely arise from compact object mergers, at rates comparable to short GRBs.

  4. Carpet-3 detection of a photon-like air shower with estimated primary energy above 100 TeV in a spatial and temporal coincidence with GRB 221009A

    astro-ph.HE 2025-02 conditional novelty 6.0 of 10

    Carpet-3 reports a photon-like air shower with estimated energy around 300 TeV arriving from the direction of GRB 221009A about 75 minutes after the trigger, with a coincidence probability of about 0.9 percent.

  5. H.E.S.S. programme searching for VHE gamma rays associated with FRBs

    astro-ph.HE 2025-07 conditional novelty 5.0 of 10

    H.E.S.S. found no very high energy gamma-ray counterpart to targeted fast radio bursts, setting 99% confidence upper limits on their luminosity of 10^44 to 10^48 erg/s.

  6. Rapid Response Triggering for Radio Transients with the SKA Observatory

    astro-ph.IM 2026-07 accept novelty 3.0 of 10

    SKA-Low and SKA-Mid should implement automated rapid-response triggering on external and internal alerts to enable early radio observations of diverse transients.

Pith tools