EP 241021A: Swift observation summary

Mission:	Einstein Probe
GRB RA:	28.848°
GRB Dec:	+5.938°
GRB Err:	1.2 arcsec
T0:	2024-10-21 05:07:56 UT
Galactic:	150.35° -53.49°
Galactic N_H:	4.52× 10²⁰ cm^-2
Galactic E(B-V):	0.04967827

Sun distance:	174.41°
Sun angle:	11.81 [hr](West of Sun)
Moon distance:	51.51°
Visibility of this field.

Data analysed so far:

ObsID: 00021725001 with 2.6 ks exposure.
ObsID: 00021725002 with 1.4 ks exposure.

About ToO analysis.

Find an upper limit.

Sources found so far

So far 3 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Einstein Probe pos	Exposure
1 [details]	01h 55m 44.03s28.93346°	+05° 52′ 38.4″5.87734°	6.3′′	Good	6.3′	3.9 ks
Mean XRT rate: 4.1 (+1.4, -1.2) ×10^-3 ct s^-1 Peak XRT rate: 4.1 (+1.4, -1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.11 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.7 (+2.0, -1.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.7 (+2.0, -1.6) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	01h 55m 52.49s28.96872°	+05° 51′ 20.1″5.85559°	8.2′′	Poor	8.7′	3.9 ks
Mean XRT rate: 1.87 (+1.14, -0.84) ×10^-3 ct s^-1 Peak XRT rate: 1.87 (+1.14, -0.84) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 1.3×10^-4 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.3 (+2.6, -1.9) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 4.3 (+2.6, -1.9) ×10^-14 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
3 [details]	01h 55m 36.36s28.90151°	+05° 46′ 59.9″5.78331°	6.4′′	Poor	9.8′	3.9 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined 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?]

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.