A blast from the infant Universe: The very high-z GRB 210905A

Home

All issues

Volume 665 (September 2022)

A&A, 665 (2022) A125

Full HTML

Press Release

Open Access

Table 2.

Fits to the prompt emission spectra.

Spectrum ^(a)	Instruments	Model ^(f)	Time interval	α	E_peak or ν_m	E_break or ν_c	Flux (15−1500 keV)	χ² (d.o.f.)
			(relative to T₀, s)	(photon index)	(keV)	(keV)	(10⁻⁷ erg cm⁻² s⁻¹)

‘peak’ ^(b)	BAT+KW	CPL	[−0.465, 2.479]					40.2 (58)
Pulse 1	BAT+KW	CPL	[−29.905, 11.311]					36.5 (58)
Pulse 1	BAT+KW	DBPL	[−29.905, 11.311]		127			35.2 (56)
X-ray flare ^(c)	XRT+KW	DBPL	[80.0, 120.0]			Unconstrained		225.9 (281)
Pulse 2 ^(c)	XRT+BAT+KW	CPL	[343.983, 426.415]					48.6 (58)
Pulse 2 ^(c)	XRT+BAT+KW	DBPL	[343.983, 426.415]		50			714.2 (714)
Pulse 3 ^(d)	BAT	CPL	[747.311, 797.359]					55.2 (58)
Pulse 3 ^(e)	KW	CPL	[747.311, 862.127]					0 (0) ^(e)
Pulse 3 ^(d)^,^(g)	REM+BAT+KW	DBPL	[747.311, 797.359]		154	0.006 ^(g)		59.3 (56)

Notes.

^(a)

All spectra, except the first, are time-averaged.

^(b)

This spectrum was used to calculate the peak energy flux.

^(c)

The interval covered by XRT.

^(d)

The interval covered by BAT.

^(e)

KW-only fit; for the CPL model, the 3-channel fit has 0 degrees of freedom.

^(f)

CPL stands for cut-off power-law. DBPL stands for double-broken power-law, used for the synchrotron model. In this last case, the power-law indices were fixed as described in Sect. 3.2.

^(g)

This break was fixed to match the H-band data.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.