GRB 171010A: Swift observation summary

Mission:	Fermi/LAT
GRB RA:	66.740°
GRB Dec:	-10.540°
GRB Err:	14.4 arcmin
T0:	2017-10-10 19:00:45 UT
Galactic:	205.65° -36.81°
Galactic N_H:	5.17× 10²⁰ cm^-2
Galactic E(B-V):	0.07843848

Sun distance:	126.82°
Sun angle:	8.64 [hr](West of Sun)
Moon distance:	34.39°
Visibility of this field.

Data analysed so far:

ObsID: 00020778001 with 5.0 ks exposure.

Source 2 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.

Probable afterglow details

A source was found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from LAT pos	Exposure	Notes	Vizier
2 [details]	04h 26m 19.44s66.58102°	-10° 27′ 47.1″-10.46308°	1.4′′	Good	10.5′	5.0 ks	The source is 4.2-σ above the RASS limit.
Mean XRT rate: 0.603 (±0.021) ct s^-1 Peak XRT rate: 1.32 (±0.30) ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.99 (±0.07) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 4.4 (±1.0) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~1.94×10^-4 [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 2SXPS 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.

Find an upper limit.

Sources found so far

So far 4 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from LAT pos	Exposure	Notes
1 [details]	04h 26m 26.30s66.60958°	-10° 24′ 13.5″-10.40376°	6.8′′	Poor	11.2′	3.6 ks
Mean XRT rate: 4.3 (+1.7, -1.4) ×10^-3 ct s^-1 Peak XRT rate: 4.3 (+1.7, -1.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 8.5 (+3.4, -2.7) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 8.5 (+3.4, -2.7) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.7 [What is this?]
2 [details]	04h 26m 19.44s66.58102°	-10° 27′ 47.1″-10.46308°	1.4′′	Good	10.5′	5.0 ks	The source is 4.2-σ above the RASS limit.
Mean XRT rate: 0.603 (±0.021) ct s^-1 Peak XRT rate: 1.32 (±0.30) ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.99 (±0.07) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 4.4 (±1.0) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~1.94×10^-4 [What is this?]
3 [details]	04h 26m 37.52s66.65632°	-10° 32′ 52.4″-10.54790°	5.9′′	Good	5.0′	5.0 ks	Matches SIMBAD source: MCG-02-12-015, 8.9″ away.
Mean XRT rate: 2.71 (+1.16, -0.93) ×10^-3 ct s^-1 Peak XRT rate: 2.71 (+1.16, -0.93) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~1.4 [What is this?]
4 [details]	04h 26m 22.59s66.59412°	-10° 26′ 30.9″-10.44191°	7.9′′	Reasonable	10.4′	5.0 ks
Mean XRT rate: 6.9 (+1.7, -1.5) ×10^-3 ct s^-1 Peak XRT rate: 7.6 (±2.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.0 (±0.7) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 3.3 (±0.9) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.3 [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.