GRB 230204B: Swift observation summary

Mission:	MAXI
GRB RA:	197.646°
GRB Dec:	-21.718°
GRB Err:	5 arcsec
T0:	2023-02-04 21:44:25 UT
Galactic:	308.82° +40.93°
Galactic N_H:	7.39× 10²⁰ cm^-2
Galactic E(B-V):	0.1120062

Sun distance:	110.30°
Sun angle:	8.02 [hr](West of Sun)
Moon distance:	80.03°
Visibility of this field.

Data analysed so far:

ObsID: 00021535001 with 4.2 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.

Find an upper limit.

Sources found so far

So far 8 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from MAXI pos	Exposure	Notes
1 [details]	13h 10m 58.10s197.74208°	-21° 40′ 56.3″-21.68230°	5.8′′	Good	5.8′	4.2 ks	Matches SIMBAD source: 2MASX J13105834-2140557, 3.5″ away.
Mean XRT rate: 4.8 (+1.6, -1.3) ×10^-3 ct s^-1 Peak XRT rate: 4.8 (+1.6, -1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	13h 10m 15.58s197.56490°	-21° 51′ 22.7″-21.85631°	6.7′′	Good	9.4′	4.2 ks
Mean XRT rate: 3.6 (+1.4, -1.1) ×10^-3 ct s^-1 Peak XRT rate: 3.6 (+1.4, -1.1) ×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?]
3 [details]	13h 10m 34.58s197.64410°	-21° 42′ 58.9″-21.71637°	7.4′′	Good	8.6′′	4.2 ks
Mean XRT rate: 5.6 (±1.5) ×10^-3 ct s^-1 Peak XRT rate: 5.6 (±1.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.8 (±1.0) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 3.8 (±1.0) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
4 [details]	13h 10m 49.32s197.70549°	-21° 41′ 42.6″-21.69518°	6.1′′	Good	3.6′	4.2 ks
Mean XRT rate: 1.7 (+1.0, -0.7) ×10^-3 ct s^-1 Peak XRT rate: 1.7 (+1.0, -0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.9 (+1.7, -1.3) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 2.9 (+1.7, -1.3) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
5 [details]	13h 09m 50.55s197.46062°	-21° 37′ 19.2″-21.62201°	6.0′′	Poor	11.8′	4.2 ks	This source may be affected by extended emission
Mean XRT rate: 2.13 (+1.26, -0.93) ×10^-3 ct s^-1 Peak XRT rate: 2.13 (+1.26, -0.93) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.18 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.0 (+0.6, -0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.0 (+0.6, -0.4) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
6 [details]	13h 10m 38.59s197.66080°	-21° 39′ 21.4″-21.65595°	6.7′′	Good	3.8′	4.2 ks
Mean XRT rate: 2.05 (+1.06, -0.81) ×10^-3 ct s^-1 Peak XRT rate: 2.05 (+1.06, -0.81) ×10^-3 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?]
7 [details]	13h 10m 02.39s197.50997°	-21° 53′ 58.7″-21.89964°	7.9′′	Reasonable	13.3′	1.7 ks
Mean XRT rate: 3.9 (+2.5, -1.8) ×10^-3 ct s^-1 Peak XRT rate: 3.9 (+2.5, -1.8) ×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?]
8 [details]	13h 09m 50.88s197.46199°	-21° 37′ 51.6″-21.63101°	6.3′′	Good	11.5′	4.2 ks	This source may be affected by extended emission
Mean XRT rate: 3.9 (+1.6, -1.2) ×10^-3 ct s^-1 Peak XRT rate: 3.9 (+1.6, -1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.06 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.5 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.5 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 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.

Image

Select image style: Draggable PNG | JS9.

Magnify image and make scrollable?

FITS image.

Exposure map

Magnify exposure map and make scrollable?

FITS exposure map.