English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We test the spectral-energy correlation including the new bursts detected(mostly) by Swift with firm measurements of their redshifts and peak energy.The problem of identifying the jet breaks is discussed in the complex andmultibreak/flaring X-ray light curves observed by Swift. We use the opticaldata as the most reliable source for the identification of the jet break, sincethe X-ray flux may be produced by a mechanism different from the externalshocks between the fireball and the circumburst medium, which are responsiblefor the optical afterglow. We show that the presence of an underlying SN eventin XRF 050416A requires a break to occur in the afterglow optical light curveat around the expected jet break time. The possible presence of a jet break inthe optical light curve of GRB 050401 is also discussed. We point out that, formeasuring the jet break, it is mandatory that the optical light curve extendsafter the epoch where the jet break is expected. The interpretation of theearly optical breaks in GRB 050922C and GRB 060206 as jet breaks iscontroversial because they might instead correspond to the flat-to-steep decaytransition common in the early X-ray light curves. All the 16 bursts comingfrom Swift are consistent with the E_p-E_gamma and E_p-E_iso-t_jet correlation.No outlier is found to date. Moreover, the small dispersion of thesecorrelations, confirmed also by the Swift bursts, strengthens the case of usingGRBs as standard candles.Comment: 12 pages, 1 table, 8 figures. Accepted for publication in A&

Confirming the γ-ray burst spectral-energy correlations in the era of multiple time breaks