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.

Find an upper limit.

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), 2.4″ 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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Exposure map

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FITS exposure map.