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The collimation--corrected GRB energies correlate with the peak energy of their $\nu F_{\nu}$ spectrum

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arxiv astro-ph/0405602 v2 pith:GPADHA5H submitted 2004-05-29 astro-ph

G. Ghirlanda (1) , G. Ghisellini (1) , D. Lazzati (2) ((1) INAF - OAB , Merate , (2) IoA - Cambridge) This is my paper · ORCID
classification astro-ph
keywords peakgammacorrelationenergyburstscollimation--correctedlightwill
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abstract

We consider all bursts with known redshift and $\nu F_\nu$ peak energy, $E^{obs}_{peak}$. For a good fraction of them an estimate of the jet opening angle is available from the achromatic break of their afterglow light curve. This allows the derivation of the collimation--corrected energy of the bursts, $E_\gamma$. The distribution of the values of $E_\gamma$ is more spread with respect to previous findings, covering about two orders of magnitude. We find a surprisingly tight correlation between $E_\gamma$ and the source frame $E_{peak}$: $E^{obs}_{peak}(1+z) \propto E_\gamma^{0.7}$. This correlation can shed light on the still uncertain radiation processes for the prompt GRB emission. More importantly, if the small scatter of this newly found correlation will be confirmed by forthcoming data, it will be possible to use it for cosmological purposes.

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Cited by 4 Pith papers

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

  1. 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.

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    astro-ph.HE 2026-06 unverdicted novelty 5.0 of 10

    GRB 250706B/C exhibits temporal features consistent with fallback-regulated accretion operating on a high-luminosity branch in a collapsar.

  3. Investigating the cosmic distance duality relation with gamma-ray bursts

    astro-ph.CO 2025-09 reject novelty 5.0 of 10

    Combined gamma-ray burst and multi-probe data show no significant violation of the cosmic distance duality relation and prefer a Planck-like Hubble constant.

  4. A review of long lasting activities of the central engine of gamma-ray bursts

    astro-ph.HE 2025-01 unverdicted novelty 1.0 of 10

    A review of ultra-long gamma-ray bursts and X-ray plateau phases as evidence that the central engine keeps working long after the first flash.

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