GRB 241217A: Swift observation summary

This is a confirmed GRB (GRB 241217A), the afterglow is source 1 -- please see the GRB results at https://www.swift.ac.uk/xrt_products/00018993 for updated analysis

Mission:	Einstein Probe/WXT
Einstein Probe RA:	84.167°
Einstein Probe Dec:	-25.281°
Einstein Probe Err:	3.07416 arcsec
T0:	2024-12-17 16:58:04 UT
Galactic:	229.08° -26.91°
Galactic N_H:	1.64× 10²⁰ cm^-2

Sun distance:	131.33°
Sun angle:	11.9 [hr](East of Sun)
Moon distance:	60.81°
Visibility of this field.
First slew:	2024-12-17 17:40:31 UT
First observation:	2024-12-17 17:32:37 UT
First analysis:	2024-12-17 20:48:32 UT

Data analysed so far:

ObsID: 00018993001 with 1.4 ks exposure.
ObsID: 00018993002 with 1.5 ks exposure.
ObsID: 00018993003 with 0.8 ks exposure.

About tiled field analysis.

So far 1 fields have been scheduled for observations. Data are available and processed for 1 of these.

1 fields were processed but not included in the analysis. This is because, after standard processing and the removal of times contaminated by light reflected off the bright Earth, there was too little data (<100 s) for source detection to be performed.

Find an upper limit.

Sources found so far

So far 7 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from Einstein Probe/WXT pos	Exposure	Notes
1 [details]	05h 36m 36.37s84.15154°	-25° 17′ 49.5″-25.29707°	4.3′′ ^*	Good	3 (U)	1.3′	9.1 ks	The source is fading with 4.6-σ significance. The source is 4.5-σ above the RASS limit.
Mean XRT rate: 0.113 (±0.013) ct s^-1 Peak XRT rate: 2.2 (±0.5) ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.148 (±0.018) ct s^-1 Peak XRT rate converted to PSPC: 2.9 (±0.6) ct s^-1 Mean XRT flux: 3.8 (±0.5) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 7.4 (±1.6) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	05h 36m 35.74s84.14890°	-25° 16′ 36.1″-25.27670°	8.2′′	Poor	3 (U)	1.0′	9.7 ks	The source is fading with 4.3-σ significance. The source is 4.1-σ above the RASS limit. This source may be affected by optical loading
Mean XRT rate: 0.63 (±0.13) ct s^-1 Peak XRT rate: 0.89 (±0.21) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.75 (±0.16) ct s^-1 Peak XRT rate converted to PSPC: 1.06 (±0.25) ct s^-1 Mean XRT flux: 2.5 (±0.5) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 3.6 (±0.8) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum
3 [details]	05h 36m 29.86s84.12441°	-25° 13′ 52.6″-25.23127°	5.1′′ ^*	Poor	3 (U)	3.8′	9.7 ks	Matches SIMBAD source: PMN J0536-2513, 7.5″ away.
Mean XRT rate: 3.55 (+1.09, -0.86) ×10^-3 ct s^-1 Peak XRT rate: 4.1 (+1.7, -1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 3.37 (+1.03, -0.81) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 3.9 (+1.6, -1.3) ×10^-3 ct s^-1 Mean XRT flux: 1.05 (+0.32, -0.25) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.2 (+0.5, -0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
4 [details]	05h 36m 39.48s84.16448°	-25° 17′ 35.6″-25.29323°	5.9′′	Poor	3 (U)	0.7′	9.7 ks	The source is fading with 5.5-σ significance. The source is 5.4-σ above the RASS limit. This source may be affected by optical loading
Mean XRT rate: 2.09 (±0.12) ct s^-1 Peak XRT rate: 21 (±4) ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 2.03 (±0.12) ct s^-1 Peak XRT rate converted to PSPC: 20 (±4) ct s^-1 Mean XRT flux: 1.12 (±0.06) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 1.10 (±0.20) ×10^-9 erg cm^-1s^-1 Products: Light curve \| Spectrum
5 [details]	05h 37m 16.99s84.32081°	-25° 24′ 01.2″-25.40034°	6.1′′	Poor	3 (U)	11.0′	6.8 ks	The source is fading with 3.0-σ significance. The source is 3.3-σ above the RASS limit.
Mean XRT rate: 8.7 (±2.7) ×10^-3 ct s^-1 Peak XRT rate: 8.7 (±2.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 6.9×10^-9 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 49587.6 (+1.52 × 10⁴, -15215.5) ×10⁴ ct s^-1 Peak XRT rate converted to PSPC: 49587.6 (+1.52 × 10⁴, -15215.5) ×10⁴ ct s^-1 Mean XRT flux: 1.4 (±0.4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.4 (±0.4) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum
6 [details]	05h 37m 23.29s84.34704°	-25° 17′ 44.4″-25.29567°	6.4′′	Poor	3 (U)	9.8′	9.7 ks
Mean XRT rate: 8.8 (+2.9, -2.4) ×10^-3 ct s^-1 Peak XRT rate: 3.0 (+1.4, -1.2) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.24 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 1.2 (+0.4, -0.3) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 3.9 (+1.8, -1.5) ×10^-3 ct s^-1 Mean XRT flux: 6.1 (+2.0, -1.7) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 2.1 (+0.9, -0.8) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum
7 [details]	05h 36m 35.71s84.14881°	-25° 17′ 20.9″-25.28913°	6.4′′	Reasonable	3 (U)	1.1′	9.1 ks	The source is fading with 4.5-σ significance. The source is 4.1-σ above the RASS limit. This source may be affected by optical loading
Mean XRT rate: 8.6 (±0.7) ×10^-2 ct s^-1 Peak XRT rate: 0.32 (±0.07) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.081 (±0.007) ct s^-1 Peak XRT rate converted to PSPC: 0.30 (±0.07) ct s^-1 Mean XRT flux: 4.5 (±0.4) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 1.6 (±0.4) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the LSXPS documentation.
³ T=Transient Source, O=Outbursting known source, U=Uncatalogued X-ray source, K=Known X-ray source.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

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Exposure map

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FITS exposure map.