GRB 220708B: Swift observation summary

Mission:	Swift/BAT-GUANO
GRB RA:	248.652°
GRB Dec:	+36.338°
GRB Err:	5.0 arcmin
T0:	2022-07-08 02:06:57 UT
Galactic:	58.65° +42.32°
Galactic N_H:	1.32× 10²⁰ cm^-2
Galactic E(B-V):	0.01690165

Sun distance:	110.78°
Sun angle:	9.42 [hr] (East of Sun)
Moon distance:	59.91°
Visibility of this field.

Data analysed so far:

ObsID: 00021508001 with 1.7 ks exposure.

Source 3 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.

Probable afterglow details

A source was found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT-GUANO pos	Exposure	Notes	Vizier
3 [details]	16h 34m 18.97s248.57902°	+36° 20′ 52.0″36.34777°	4.0′′	Good	3.6′	1.7 ks	The source is 4.9-σ above the RASS limit.
Mean XRT rate: 6.4 (±0.7) ×10^-2 ct s^-1 Peak XRT rate: 7.2 (±1.6) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.98 (±0.22) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 2.3 (±0.5) ×10^-12 erg cm^-1s^-1 Products: Light curve \| 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 2SXPS 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.

Find an upper limit.

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-GUANO pos	Exposure	Notes
1 [details]	16h 34m 50.78s248.71158°	+36° 27′ 16.1″36.45448°	5.9′′	Good	7.6′	1.7 ks	Matches known X-ray source: 2SXPS J163450.4+362718 (from 2SXPS), 5″ away. Matches SIMBAD source: SDSS J163450.61+362718.6, 3.2″ away.
Mean XRT rate: 9.3 (+3.3, -2.7) ×10^-3 ct s^-1 Peak XRT rate: 9.3 (+3.3, -2.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 8.1 (+2.8, -2.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 8.1 (+2.8, -2.3) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	16h 35m 13.45s248.80602°	+36° 27′ 01.6″36.45045°	5.8′′	Good	10.0′	1.7 ks	Matches known X-ray source: 2SXPS J163513.3+362706 (from 2SXPS), 5″ away. Matches SIMBAD source: 2MASX J16351315+3627004, 6.1″ away.
Mean XRT rate: 1.2 (+0.4, -0.3) ×10^-2 ct s^-1 Peak XRT rate: 1.2 (+0.4, -0.3) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.3 (+2.4, -1.9) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.3 (+2.4, -1.9) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	16h 34m 18.97s248.57902°	+36° 20′ 52.0″36.34777°	4.0′′	Good	3.6′	1.7 ks	The source is 4.9-σ above the RASS limit.
Mean XRT rate: 6.4 (±0.7) ×10^-2 ct s^-1 Peak XRT rate: 7.2 (±1.6) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.98 (±0.22) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 2.3 (±0.5) ×10^-12 erg cm^-1s^-1 Products: Light curve \| 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.

Image

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FITS image.

Exposure map

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FITS exposure map.