Matches in SemOpenAlex for { <https://semopenalex.org/work/W4221138356> ?p ?o ?g. }
- W4221138356 endingPage "A125" @default.
- W4221138356 startingPage "A125" @default.
- W4221138356 abstract "We present a detailed follow-up of the very energetic GRB 210905A at a high redshift of z = 6.312 and its luminous X-ray and optical afterglow. Following the detection by Swift and Konus- Wind , we obtained a photometric and spectroscopic follow-up in the optical and near-infrared (NIR), covering both the prompt and afterglow emission from a few minutes up to 20 Ms after burst. With an isotropic gamma-ray energy release of E iso = 1.27 −0.19 +0.20 × 10 54 erg, GRB 210905A lies in the top ∼7% of gamma-ray bursts (GRBs) in the Konus- Wind catalogue in terms of energy released. Its afterglow is among the most luminous ever observed, and, in particular, it is one of the most luminous in the optical at t ≳ 0.5 d in the rest frame. The afterglow starts with a shallow evolution that can be explained by energy injection, and it is followed by a steeper decay, while the spectral energy distribution is in agreement with slow cooling in a constant-density environment within the standard fireball theory. A jet break at ∼46.2 ± 16.3 d (6.3 ± 2.2 d rest-frame) has been observed in the X-ray light curve; however, it is hidden in the H band due to a constant contribution from the host galaxy and potentially from a foreground intervening galaxy. In particular, the host galaxy is only the fourth GRB host at z > 6 known to date. By assuming a number density n = 1 cm −3 and an efficiency η = 0.2, we derived a half-opening angle of 8.4 ° ±1.0°, which is the highest ever measured for a z ≳ 6 burst, but within the range covered by closer events. The resulting collimation-corrected gamma-ray energy release of ≃1 × 10 52 erg is also among the highest ever measured. The moderately large half-opening angle argues against recent claims of an inverse dependence of the half-opening angle on the redshift. The total jet energy is likely too large to be sustained by a standard magnetar, and it suggests that the central engine of this burst was a newly formed black hole. Despite the outstanding energetics and luminosity of both GRB 210905A and its afterglow, we demonstrate that they are consistent within 2 σ with those of less distant bursts, indicating that the powering mechanisms and progenitors do not evolve significantly with redshift." @default.
- W4221138356 created "2022-04-03" @default.
- W4221138356 creator A5000947923 @default.
- W4221138356 creator A5003136954 @default.
- W4221138356 creator A5004498560 @default.
- W4221138356 creator A5004755891 @default.
- W4221138356 creator A5006347940 @default.
- W4221138356 creator A5009212329 @default.
- W4221138356 creator A5009960968 @default.
- W4221138356 creator A5012149335 @default.
- W4221138356 creator A5012688653 @default.
- W4221138356 creator A5012881566 @default.
- W4221138356 creator A5015955078 @default.
- W4221138356 creator A5018578712 @default.
- W4221138356 creator A5018985974 @default.
- W4221138356 creator A5019346398 @default.
- W4221138356 creator A5021008156 @default.
- W4221138356 creator A5021324146 @default.
- W4221138356 creator A5022947495 @default.
- W4221138356 creator A5023277552 @default.
- W4221138356 creator A5023589580 @default.
- W4221138356 creator A5025740124 @default.
- W4221138356 creator A5025776045 @default.
- W4221138356 creator A5028778207 @default.
- W4221138356 creator A5033562952 @default.
- W4221138356 creator A5033715606 @default.
- W4221138356 creator A5036418646 @default.
- W4221138356 creator A5038985873 @default.
- W4221138356 creator A5039189637 @default.
- W4221138356 creator A5040988103 @default.
- W4221138356 creator A5041391557 @default.
- W4221138356 creator A5043770926 @default.
- W4221138356 creator A5045827236 @default.
- W4221138356 creator A5047115923 @default.
- W4221138356 creator A5047138394 @default.
- W4221138356 creator A5048353300 @default.
- W4221138356 creator A5051900328 @default.
- W4221138356 creator A5054685979 @default.
- W4221138356 creator A5058042267 @default.
- W4221138356 creator A5058199394 @default.
- W4221138356 creator A5059332014 @default.
- W4221138356 creator A5059563265 @default.
- W4221138356 creator A5066455210 @default.
- W4221138356 creator A5066945189 @default.
- W4221138356 creator A5069889524 @default.
- W4221138356 creator A5070191867 @default.
- W4221138356 creator A5071068584 @default.
- W4221138356 creator A5071254630 @default.
- W4221138356 creator A5071700393 @default.
- W4221138356 creator A5072547252 @default.
- W4221138356 creator A5074198374 @default.
- W4221138356 creator A5078616858 @default.
- W4221138356 creator A5080744766 @default.
- W4221138356 creator A5081265238 @default.
- W4221138356 creator A5083874632 @default.
- W4221138356 creator A5085670376 @default.
- W4221138356 creator A5088713263 @default.
- W4221138356 date "2022-09-01" @default.
- W4221138356 modified "2023-10-17" @default.
- W4221138356 title "A blast from the infant Universe: The very high-<i>z</i>GRB 210905A" @default.
- W4221138356 cites W1508718518 @default.
- W4221138356 cites W1568254385 @default.
- W4221138356 cites W1590054290 @default.
- W4221138356 cites W1682293795 @default.
- W4221138356 cites W1767718506 @default.
- W4221138356 cites W1802488628 @default.
- W4221138356 cites W1835767990 @default.
- W4221138356 cites W1879447085 @default.
- W4221138356 cites W1935842616 @default.
- W4221138356 cites W1946077397 @default.
- W4221138356 cites W1951458270 @default.
- W4221138356 cites W1960905533 @default.
- W4221138356 cites W1969939835 @default.
- W4221138356 cites W1972334617 @default.
- W4221138356 cites W1975498920 @default.
- W4221138356 cites W1976731297 @default.
- W4221138356 cites W1978009383 @default.
- W4221138356 cites W1980277978 @default.
- W4221138356 cites W1980473728 @default.
- W4221138356 cites W1980806062 @default.
- W4221138356 cites W1981860635 @default.
- W4221138356 cites W1982164120 @default.
- W4221138356 cites W1986284940 @default.
- W4221138356 cites W1987204710 @default.
- W4221138356 cites W1990209373 @default.
- W4221138356 cites W1992546390 @default.
- W4221138356 cites W1997008272 @default.
- W4221138356 cites W1997480321 @default.
- W4221138356 cites W1998569433 @default.
- W4221138356 cites W1999369474 @default.
- W4221138356 cites W2003271886 @default.
- W4221138356 cites W2005814450 @default.
- W4221138356 cites W2006200231 @default.
- W4221138356 cites W2006394865 @default.
- W4221138356 cites W2009321810 @default.
- W4221138356 cites W2017646491 @default.
- W4221138356 cites W2018268744 @default.
- W4221138356 cites W2021983948 @default.