GRB 161010A: Swift observation summary

Mission:	INTEGRAL
GRB RA:	275.218°
GRB Dec:	-28.787°
GRB Err:	1.5 arcmin
T0:	2016-10-10 13:36:15 UT
Galactic:	3.92° -6.65°
Galactic N_H:	1.33× 10²¹ cm^-2
Galactic E(B-V):	0.4037516

Sun distance:	76.97°
Sun angle:	5.26 [hr] (East of Sun)
Moon distance:	30.42°
Visibility of this field.

Data analysed so far:

ObsID: 00020702001 with 5.0 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.

Probable afterglow details

A source was found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from INTEGRAL pos	Exposure	Notes	Vizier
1 [details]	18h 20m 51.44s275.21435°	-28° 47′ 06.5″-28.78515°	2.9′′	Good	0.2′	9.0 ks	The source is fading with 4.4-σ significance. The source is 3.9-σ above the RASS limit.
Mean XRT rate: 0.119 (±0.005) ct s^-1 Peak XRT rate: 0.44 (±0.10) ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.01 (±0.20) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 1.8 (±0.4) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~6.51×10^-5 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-6.65°

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 INTEGRAL pos	Exposure	Notes
1 [details]	18h 20m 51.44s275.21435°	-28° 47′ 06.5″-28.78515°	2.9′′	Good	0.2′	9.0 ks	The source is fading with 4.4-σ significance. The source is 3.9-σ above the RASS limit.
Mean XRT rate: 0.119 (±0.005) ct s^-1 Peak XRT rate: 0.44 (±0.10) ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.01 (±0.20) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 1.8 (±0.4) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~6.51×10^-5 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-6.65°
2 [details]	18h 20m 00.79s275.00327°	-28° 46′ 54.5″-28.78181°	6.6′′	Reasonable	11.3′	7.1 ks	Matches known X-ray source: 1SXPS J182001.4-284656 (from 1SXPS), 8.7″ away.
Mean XRT rate: 6.0 (±1.2) ×10^-3 ct s^-1 Peak XRT rate: 6.0 (±1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.49 (+0.31, -0.29) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.5 (±0.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.4 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-6.65°
3 [details]	18h 20m 49.65s275.20688°	-28° 39′ 33.6″-28.65934°	6.8′′	Poor	7.7′	9.0 ks
Mean XRT rate: 9 (+5, -4) ×10^-4 ct s^-1 Peak XRT rate: 9 (+5, -4) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-6.65°
4 [details]	18h 21m 16.17s275.31739°	-28° 43′ 56.4″-28.73232°	6.2′′	Poor	6.2′	9.0 ks
Mean XRT rate: 1.5 (+0.6, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.5 (+0.6, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.7 (+1.9, -1.6) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 4.7 (+1.9, -1.6) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.6 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-6.65°

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.