GRB 151120A: Swift observation summary

Mission:	INTEGRAL
GRB RA:	157.250°
GRB Dec:	-32.524°
GRB Err:	1.5 arcmin
T0:	2015-11-20 08:22:34 UT
Galactic:	271.11° +21.40°
Galactic N_H:	7.04× 10²⁰ cm^-2
Galactic E(B-V):	0.07788771

Sun distance:	69.91°
Sun angle:	5.21 [hr](West of Sun)
Moon distance:	141.40°
Visibility of this field.

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 field 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]	10h 28m 57.83s157.24096°	-32° 31′ 34.2″-32.52618°	3.6′′	Good	0.5′	3.5 ks	The source is brighter than the RASS limit.
Mean XRT rate: 8.1 (±0.6) ×10^-2 ct s^-1 Peak XRT rate: 0.119 (±0.027) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.092 (±0.006) ct s^-1 Peak XRT rate converted to PSPC: 0.14 (±0.03) ct s^-1 Mean XRT flux: 2.96 (±0.20) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 4.3 (±1.0) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~9.96×10^-7 [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.

Find an upper limit.

Sources found so far

So far 4 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from INTEGRAL pos	Exposure	Notes
1 [details]	10h 28m 57.83s157.24096°	-32° 31′ 34.2″-32.52618°	3.6′′	Good	0.5′	3.5 ks	The source is brighter than the RASS limit.
Mean XRT rate: 8.1 (±0.6) ×10^-2 ct s^-1 Peak XRT rate: 0.119 (±0.027) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.092 (±0.006) ct s^-1 Peak XRT rate converted to PSPC: 0.14 (±0.03) ct s^-1 Mean XRT flux: 2.96 (±0.20) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 4.3 (±1.0) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~9.96×10^-7 [What is this?]
2 [details]	10h 28m 59.86s157.24944°	-32° 38′ 08.2″-32.63561°	4.4′′	Good	6.7′	3.5 ks
Mean XRT rate: 4.6 (±1.4) ×10^-3 ct s^-1 Peak XRT rate: 4.6 (±1.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 5.4 (±1.6) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 5.4 (±1.6) ×10^-3 ct s^-1 Mean XRT flux: 1.5 (±0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.5 (±0.5) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.78×10^-3 [What is this?]
3 [details]	10h 29m 45.94s157.44140°	-32° 32′ 36.4″-32.54345°	7.1′′	Reasonable	9.8′	2.6 ks
Mean XRT rate: 2.7 (±1.3) ×10^-3 ct s^-1 Peak XRT rate: 2.7 (±1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 1.6 (±0.8) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 1.6 (±0.8) ×10^-3 ct s^-1 Mean XRT flux: 2.2 (±1.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.2 (±1.1) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~8.49×10^-3 [What is this?]
4 [details]	10h 29m 09.34s157.28892°	-32° 29′ 32.4″-32.49233°	5.7′′	Good	2.7′	3.8 ks
Mean XRT rate: 2.2 (±1.1) ×10^-3 ct s^-1 Peak XRT rate: 2.2 (±1.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 2.4 (±1.2) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 2.4 (±1.2) ×10^-3 ct s^-1 Mean XRT flux: 8 (±4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 8 (±4) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~9.41×10^-4 [What is this?]

Image

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FITS image.

Exposure map

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FITS exposure map.