GRB 220412B: Swift observation summary

Mission:	Swift-BAT
GRB RA:	320.794°
GRB Dec:	-0.223°
GRB Err:	3.0 arcmin
T0:	2022-04-12 17:06:48 UT
Galactic:	52.27° -33.29°
Galactic N_H:	4.03× 10²⁰ cm^-2
Galactic E(B-V):	0.0520119

Sun distance:	60.70°
Sun angle:	4.02 [hr] (West of Sun)
Moon distance:	158.76°
Visibility of this field.

Data analysed so far:

ObsID: 01102329001 with 7.8 ks exposure.
ObsID: 01102329002 with 5.0 ks exposure.

About ToO analysis.

Find an upper limit.

Sources found so far

So far 15 sources have been found in the XRT data. 7 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift-BAT pos	Exposure	Notes
1 [details]	21h 23m 13.89s320.80788°	-00° 05′ 02.8″-0.08410°	2.7′′	Good	8.4′	12.7 ks	Matches known X-ray source: 1RXS J212314.1-000525 (from ROSAT/RASSFSC), 23.7″ away.
Mean XRT rate: 9.8 (±1.4) ×10^-3 ct s^-1 Peak XRT rate: 1.24 (±0.28) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.3 (±0.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.9 (±0.6) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.1 [What is this?]
2 [details]	21h 23m 45.43s320.93927°	-00° 17′ 16.3″-0.28787°	6.9′′	Reasonable	9.5′	12.7 ks	Matches SIMBAD source: 2SLAQ J212345.44-001721.4, 5.1″ away.
Mean XRT rate: 1.3 (+0.5, -0.4) ×10^-3 ct s^-1 Peak XRT rate: 1.7 (+0.9, -0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.2 (+2.1, -1.6) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 6.8 (+3.7, -2.8) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~2.7 [What is this?]
3 [details]	21h 22m 44.06s320.68357°	-00° 16′ 16.5″-0.27124°	6.5′′	Reasonable	7.2′	12.7 ks
Mean XRT rate: 1.2 (+0.7, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.2 (+0.7, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~1.7 [What is this?]
4 [details]	21h 22m 58.37s320.74320°	-00° 19′ 16.7″-0.32130°	6.4′′	Poor	6.6′	12.7 ks
Mean XRT rate: 1.1 (+0.7, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.1 (+0.7, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
5 [details]	21h 23m 31.71s320.88211°	-00° 17′ 35.5″-0.29319°	8.3′′	Poor	6.8′	12.7 ks	Matches SIMBAD source: 2SLAQ J212331.50-001742.3, 7.5″ away.
Mean XRT rate: 1.2 (+0.7, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.2 (+0.7, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~1.5 [What is this?]
6 [details]	21h 23m 11.54s320.79810°	-00° 16′ 45.2″-0.27922°	8.5′′	Good	3.4′	12.7 ks
Mean XRT rate: 9 (+6, -4) ×10^-4 ct s^-1 Peak XRT rate: 9 (+6, -4) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.00 (+1.23, -0.90) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 2.00 (+1.23, -0.90) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.5 [What is this?]
7 [details]	21h 23m 50.57s320.96072°	-00° 20′ 58.3″-0.34953°	3.4′′	Good	12.6′	6.0 ks	Matches SIMBAD source: TYC 5195-1016-1, 5.5″ away.
Mean XRT rate: 6.2 (+1.5, -1.4) ×10^-3 ct s^-1 Peak XRT rate: 9.5 (±2.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.29 (+0.31, -0.29) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.0 (±0.5) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.5 [What is this?]
8 [details]	21h 23m 35.05s320.89603°	-00° 19′ 53.1″-0.33141°	7.8′′	Good	8.9′	12.7 ks	Matches SIMBAD source: 2SLAQ J212335.40-001958.1, 7.4″ away.
Mean XRT rate: 1.5 (+0.8, -0.6) ×10^-3 ct s^-1 Peak XRT rate: 1.5 (+0.8, -0.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.5 (+2.9, -2.2) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 5.5 (+2.9, -2.2) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~1.9 [What is this?]
9 [details]	21h 23m 26.33s320.85969°	-00° 22′ 29.6″-0.37488°	6.5′′	Good	9.9′	12.7 ks
Mean XRT rate: 2.1 (+0.8, -0.6) ×10^-3 ct s^-1 Peak XRT rate: 2.20 (+1.09, -0.85) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~1.5 [What is this?]
10 [details]	21h 23m 10.05s320.79187°	-00° 15′ 19.3″-0.25537°	8.9′′	Poor	1.9′	12.7 ks	Matches SIMBAD source: 2SLAQ J212310.26-001522.8, 4.8″ away.
Mean XRT rate: 8 (+5, -4) ×10^-4 ct s^-1 Peak XRT rate: 8 (+5, -4) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Spectrum \| Expected serendipitous sources: ~0.5 [What is this?]
11 [details]	21h 23m 03.11s320.76294°	-00° 23′ 33.3″-0.39257°	7.9′′	Poor	10.3′	12.7 ks	Matches SIMBAD source: 2SLAQ J212302.97-002333.8, 2″ away.
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~3.0 [What is this?]
12 [details]	21h 23m 13.59s320.80661°	-00° 20′ 37.9″-0.34387°	7.6′′	Poor	7.3′	12.7 ks
Mean XRT rate: 1.2 (+0.8, -0.6) ×10^-3 ct s^-1 Peak XRT rate: 1.2 (+0.8, -0.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Spectrum \| Expected serendipitous sources: ~1.8 [What is this?]
13 [details]	21h 23m 33.88s320.89117°	-00° 05′ 59.7″-0.09991°	8.1′′	Reasonable	9.4′	12.7 ks
Mean XRT rate: 1.4 (+0.7, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.4 (+0.7, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.8 (+3.0, -2.3) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 5.8 (+3.0, -2.3) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~2.4 [What is this?]
14 [details]	21h 22m 53.66s320.72359°	-00° 04′ 37.5″-0.07709°	8.2′′	Poor	9.7′	12.7 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~4.3 [What is this?]
15 [details]	21h 23m 45.71s320.94045°	-00° 19′ 46.9″-0.32971°	6.5′′	Poor	10.9′	12.7 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [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.

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FITS exposure map.