GRB 220511A: Swift observation summary

Mission:	Swift/BAT-GUANO
GRB RA:	287.446°
GRB Dec:	+17.739°
GRB Err:	6.0 arcmin
T0:	2022-05-11 13:41:57 UT
Galactic:	50.79° +4.08°
Galactic N_H:	4.43× 10²¹ cm^-2
Galactic E(B-V):	1.172177

Sun distance:	111.86°
Sun angle:	8.06 [hr] (West of Sun)
Moon distance:	110.09°
Visibility of this field.

Data analysed so far:

ObsID: 00021498001 with 5.0 ks exposure.
ObsID: 00021498002 with 5.6 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.

About ToO analysis.

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Sources found so far

So far 11 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 09m 43.59s287.43161°	+17° 43′ 46.9″17.72969°	5.4′′	Good	1.0′	10.5 ks
Mean XRT rate: 2.7 (+0.7, -0.6) ×10^-3 ct s^-1 Peak XRT rate: 4.5 (±1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.10 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.15 (+0.28, -0.26) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.9 (±0.5) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.3 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
2 [details]	19h 10m 07.58s287.53158°	+17° 49′ 36.8″17.82688°	2.3′′	Good	7.2′	10.5 ks	Matches known X-ray source: 1RXS J191007.6+174934 (from ROSAT/RASSFSC), 2.4224764914288″ away. Matches SIMBAD source: HD 230816, 1.8″ away.
Mean XRT rate: 1.55 (±0.15) ×10^-2 ct s^-1 Peak XRT rate: 1.8 (±0.5) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.72 (±0.26) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 3.2 (±0.9) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.04 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
3 [details]	19h 10m 02.41s287.51005°	+17° 44′ 21.8″17.73940°	3.9′′	Good	3.7′	10.5 ks
Mean XRT rate: 3.8 (+0.9, -0.7) ×10^-3 ct s^-1 Peak XRT rate: 3.9 (+1.2, -1.0) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.5 (+1.7, -1.4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 7.9 (+2.5, -2.1) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.2 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
4 [details]	19h 09m 59.21s287.49671°	+17° 54′ 42.7″17.91185°	6.4′′	Poor	10.8′	9.5 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: ~5.2 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
5 [details]	19h 10m 06.85s287.52856°	+17° 48′ 29.6″17.80822°	6.4′′	Poor	6.3′	10.5 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
6 [details]	19h 09m 45.11s287.43795°	+17° 52′ 58.8″17.88301°	6.6′′	Poor	8.7′	10.5 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: ~0.00×10⁺⁰ [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
7 [details]	19h 09m 33.47s287.38947°	+17° 43′ 43.4″17.72873°	6.2′′	Poor	3.3′	10.5 ks
Mean XRT rate: 1.0 (+0.7, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.0 (+0.7, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.4 (+1.7, -1.2) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 2.4 (+1.7, -1.2) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~1.4 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
8 [details]	19h 10m 32.76s287.63651°	+17° 40′ 55.0″17.68195°	6.0′′	Poor	11.4′	10.5 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: undetermined erg cm^-1s^-1 Peak XRT flux: undetermined erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
9 [details]	19h 09m 41.46s287.42274°	+17° 48′ 09.9″17.80274°	6.9′′	Poor	4.0′	10.5 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~1.8 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
10 [details]	19h 10m 30.32s287.62633°	+17° 50′ 55.2″17.84866°	6.4′′	Poor	12.2′	9.5 ks
Mean XRT rate: 1.48 (+1.01, -0.72) ×10^-3 ct s^-1 Peak XRT rate: 1.48 (+1.01, -0.72) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 9 (+6, -4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 9 (+6, -4) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~3.6 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°
11 [details]	19h 09m 56.96s287.48734°	+17° 38′ 03.2″17.63423°	6.9′′	Poor	6.7′	10.5 ks	Matches SIMBAD source: TYC 1590-166-1, 3.5″ away.
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: ~1.6 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=4.08°

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.