GRB 240606B: Swift observation summary

Mission:	GECAM
GRB RA:	40.265°
GRB Dec:	-60.612°
GRB Err:	5.0 arcmin
T0:	2024-06-06 13:33:06 UT
Galactic:	281.55° -51.72°
Galactic N_H:	2.23× 10²⁰ cm^-2
Galactic E(B-V):	0.02617002

Sun distance:	87.90°
Sun angle:	2.32 [hr](West of Sun)
Moon distance:	92.27°
Visibility of this field.

Data analysed so far:

ObsID: 00021695001 with 4.0 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 5 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from GECAM pos	Exposure
1 [details]	02h 41m 10.80s40.29499°	-60° 36′ 43.1″-60.61197°	2.4′′	Good	0.9′	4.0 ks
Mean XRT rate: 4.9 (±0.4) ×10^-2 ct s^-1 Peak XRT rate: 6.1 (±1.2) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.01 (±0.17) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 2.5 (±0.5) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	02h 42m 01.33s40.50554°	-60° 37′ 41.1″-60.62807°	6.7′′	Good	7.1′	4.0 ks
Mean XRT rate: 3.0 (+1.3, -1.0) ×10^-3 ct s^-1 Peak XRT rate: 3.0 (+1.3, -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: 7.7 (+3.4, -2.7) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 7.7 (+3.4, -2.7) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	02h 40m 06.87s40.02863°	-60° 37′ 39.8″-60.62771°	9.5′′	Poor	7.0′	4.0 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) Products: Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
4 [details]	02h 41m 37.39s40.40579°	-60° 43′ 41.7″-60.72826°	8.0′′	Good	8.1′	4.0 ks
Mean XRT rate: 3.5 (+1.5, -1.2) ×10^-3 ct s^-1 Peak XRT rate: 3.5 (+1.5, -1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.0 (+2.2, -1.7) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 5.0 (+2.2, -1.7) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
5 [details]	02h 42m 06.20s40.52585°	-60° 43′ 45.1″-60.72919°	5.9′′	Reasonable	10.4′	4.0 ks
Mean XRT rate: 2.11 (+1.31, -0.97) ×10^-3 ct s^-1 Peak XRT rate: 2.11 (+1.31, -0.97) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.0 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.0 (+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

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FITS image.

Exposure map

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FITS exposure map.