GRB 211229A: Swift observation summary

Mission:	Swift/BAT-GUANO
GRB RA:	295.075°
GRB Dec:	+23.152°
GRB Err:	4.0 arcmin
T0:	2021-12-29 03:29:15 UT
Galactic:	58.95° +0.35°
Galactic N_H:	1.07× 10²² cm^-2
Galactic E(B-V):	6.009107

Sun distance:	49.15°
Sun angle:	1.12 [hr] (East of Sun)
Moon distance:	87.62°
Visibility of this field.

Data analysed so far:

ObsID: 00021475001 with 5.0 ks exposure.

About ToO analysis.

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Sources found so far

So far 6 sources have been found in the XRT data. 2 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT-GUANO pos	Exposure	Notes
1 [details]	19h 40m 31.60s295.13168°	+23° 11′ 53.8″23.19829°	6.3′′	Poor	4.2′	5.0 ks
Mean XRT rate: 3.5 (+1.3, -1.0) ×10^-3 ct s^-1 Peak XRT rate: 3.5 (+1.3, -1.0) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 2.58 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.78 (+1.01, -0.83) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.78 (+1.01, -0.83) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.1 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=0.35°
2 [details]	19h 40m 14.76s295.06151°	+23° 15′ 42.0″23.26168°	9.7′′	Reasonable	6.6′	5.0 ks
Mean XRT rate: 1.6 (+0.9, -0.7) ×10^-3 ct s^-1 Peak XRT rate: 1.6 (+0.9, -0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~0.7 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=0.35°
3 [details]	19h 39m 32.01s294.88337°	+23° 08′ 57.9″23.14943°	6.4′′	Good	10.6′	5.0 ks
Mean XRT rate: 2.24 (+1.11, -0.85) ×10^-3 ct s^-1 Peak XRT rate: 2.24 (+1.11, -0.85) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.1 (+1.5, -1.2) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 3.1 (+1.5, -1.2) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~1.3 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=0.35°
4 [details]	19h 39m 38.76s294.91152°	+23° 15′ 09.8″23.25273°	5.6′′	Good	10.9′	5.0 ks	Matches known X-ray source: 2SXPS J193938.7+231513 (from 2SXPS), 4.2″ away. Matches SIMBAD source: NVSS J193945+231404, 7.5″ away.
Mean XRT rate: 3.1 (+1.3, -1.0) ×10^-3 ct s^-1 Peak XRT rate: 3.1 (+1.3, -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: ~0.8 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=0.35°
5 [details]	19h 40m 17.70s295.07377°	+23° 09′ 26.3″23.15731°	6.6′′	Reasonable	0.3′	5.0 ks
Mean XRT rate: 2.1 (+1.0, -0.8) ×10^-3 ct s^-1 Peak XRT rate: 2.1 (+1.0, -0.8) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.11 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (+0.7, -0.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.6 (+0.7, -0.6) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.2 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=0.35°
6 [details]	19h 40m 28.49s295.11871°	+23° 09′ 49.7″23.16381°	5.3′′	Good	2.5′	5.0 ks	Matches SIMBAD source: UCAC2 40072267, 3.7″ away.
Mean XRT rate: 2.94 (+1.13, -0.91) ×10^-3 ct s^-1 Peak XRT rate: 2.94 (+1.13, -0.91) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Spectrum \| Expected serendipitous sources: ~0.1 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=0.35°

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.

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Exposure map

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FITS exposure map.