GRB 220310A: Swift observation summary

Mission:	MAXI
GRB RA:	168.612°
GRB Dec:	+23.451°
GRB Err:	679 arcsec
T0:	2022-03-10 00:27:57 UT
Galactic:	217.07° +67.81°
Galactic N_H:	9.77× 10¹⁹ cm^-2
Galactic E(B-V):	0.01520455

Sun distance:	160.67°
Sun angle:	11.89 [hr](East of Sun)
Moon distance:	85.08°
Visibility of this field.

Data analysed so far:

ObsID: 00021482001 with 3.9 ks exposure.

About ToO analysis.

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 MAXI pos	Exposure	Notes
1 [details]	11h 14m 23.56s168.59818°	+23° 30′ 01.6″23.50044°	6.3′′	Good	3.1′	3.9 ks	Matches SIMBAD source: SDSS J111423.61+233000.7, 1.2″ away.
Mean XRT rate: 2.73 (+1.19, -0.94) ×10^-3 ct s^-1 Peak XRT rate: 2.73 (+1.19, -0.94) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.3 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.3 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~1.1 [What is this?]
2 [details]	11h 13m 29.67s168.37364°	+23° 33′ 59.5″23.56652°	4.4′′	Good	14.8′	1.7 ks	Matches SIMBAD source: NVSS J111329+233400, 6.3″ away.
Mean XRT rate: 1.7 (±0.4) ×10^-2 ct s^-1 Peak XRT rate: 1.7 (±0.4) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.19 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.14 (±0.29) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 1.14 (±0.29) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.08 [What is this?]
3 [details]	11h 14m 05.35s168.52231°	+23° 41′ 19.9″23.68885°	5.3′′	Good	15.1′	3.4 ks
Mean XRT rate: 8.6 (+2.6, -2.1) ×10^-3 ct s^-1 Peak XRT rate: 8.6 (+2.6, -2.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.09 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.0 (+2.1, -1.7) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.0 (+2.1, -1.7) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.2 [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.