Matches in SemOpenAlex for { <https://semopenalex.org/work/W4367056918> ?p ?o ?g. }
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- W4367056918 startingPage "85" @default.
- W4367056918 abstract "For gamma-ray bursts (GRBs) with durations greater than two seconds (so-called long GRBs), the intrinsic prompt gamma-ray emission appears, on average, to last longer for bursts at lower redshifts. We explore the nature of this duration-redshift anti-correlation, describing systems and conditions in which this cosmological evolution could arise. In particular, we explore its dependence on metallicity of a massive star progenitor, as we can securely count on the average stellar metallicity to increase with decreasing redshift. Although higher metallicity/lower redshift stars lose mass and angular momentum through line-driven winds, in some cases these stars are able to form more extended accretion disks when they collapse, potentially leading to longer duration GRBs. We also examine how this duration-redshift trend may show up in interacting binary models composed of a massive star and compact object companion, recently suggested to be the progenitors of radio bright GRBs. Under certain conditions, mass loss and equation of state effects from higher metallicity, lower redshift massive stars can decrease the binary separation. This can then lead to spin-up of the massive star and allow for a longer duration GRB upon the massive star's collapse. Finally, the duration-redshift trend may also be supported by a relatively larger population of small-separation binaries born in situ at low redshift." @default.
- W4367056918 created "2023-04-27" @default.
- W4367056918 creator A5014939403 @default.
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- W4367056918 creator A5075212050 @default.
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- W4367056918 creator A5086564685 @default.
- W4367056918 date "2023-04-01" @default.
- W4367056918 modified "2023-09-27" @default.
- W4367056918 title "On the Anticorrelation between Duration and Redshift in Gamma-Ray Bursts" @default.
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