GRB 211107B: Swift observation summary

Mission:	Swift/BAT
GRB RA:	65.795°
GRB Dec:	-27.552°
GRB Err:	2.0 arcmin
T0:	2021-11-07 16:27:10 UT
Galactic:	226.29° -43.35°
Galactic N_H:	3.69× 10²⁰ cm^-2
Galactic E(B-V):	0.04363696

Sun distance:	130.75°
Sun angle:	10.48 [hr](West of Sun)
Moon distance:	124.18°
Visibility of this field.

Data analysed so far:

ObsID: 00021467001 with 3.9 ks exposure.

Source 1 has been manually confirmed as the GRB afterglow; data for this object are now available through the main GRB results area for this GRB.

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Sources found so far

So far 3 sources have been found in the XRT data. 2 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT pos	Exposure	Notes
1 [details]	04h 23m 13.95s65.80812°	-27° 33′ 39.0″-27.56084°	2.7′′	Good	0.9′	3.9 ks
Mean XRT rate: 1.80 (+0.27, -0.25) ×10^-2 ct s^-1 Peak XRT rate: 2.6 (±0.7) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.9 (±0.7) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.2 (±1.9) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~1.96×10^-3 [What is this?]
2 [details]	04h 23m 04.47s65.76864°	-27° 41′ 53.6″-27.69822°	5.2′′	Good	8.9′	3.9 ks	Matches known X-ray source: 4XMM J042304.3-274159 (from XMM-NEWTON/XMMSSC), 6.1267854785042″ away.
Mean XRT rate: 3.2 (+1.4, -1.1) ×10^-3 ct s^-1 Peak XRT rate: 3.2 (+1.4, -1.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~0.5 [What is this?]
3 [details]	04h 23m 20.26s65.83442°	-27° 45′ 29.1″-27.75809°	6.5′′	Reasonable	12.5′	3.3 ks	Matches known X-ray source: 4XMM J042320.4-274528 (from XMM-NEWTON/XMMSSC), 3.0432807884416″ away.
Mean XRT rate: 2.3 (+1.5, -1.0) ×10^-3 ct s^-1 Peak XRT rate: 2.3 (+1.5, -1.0) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~1.7 [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 1SXPS documentation.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

Image

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FITS image.

Exposure map

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FITS exposure map.