GRB 150902A: Swift observation summary

Mission:	Fermi/LAT
GRB RA:	214.926°
GRB Dec:	-69.361°
GRB Err:	7.6 arcmin
T0:	2015-09-02 17:35:24 UT
Galactic:	310.61° -7.82°
Galactic N_H:	2.35× 10²¹ cm^-2
Galactic E(B-V):	0.3964772

Sun distance:	85.39°
Sun angle:	3.56 [hr] (East of Sun)
Moon distance:	121.09°
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 LAT pos	Exposure	Notes	Vizier
1 [details]	14h 19m 55.09s214.97956°	-69° 21′ 13.1″-69.35365°	4.3′′	Good	1.2′	6.4 ks
Mean XRT rate: 7.9 (±1.3) ×10^-3 ct s^-1 Peak XRT rate: 9.4 (±1.7) ×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: 5.9 (±1.0) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 7.0 (±1.3) ×10^-3 ct s^-1 Mean XRT flux: 3.6 (±0.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 4.3 (±0.8) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.10×10^-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.

Find an upper limit.

Sources found so far

So far 5 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from LAT pos	Exposure
1 [details]	14h 19m 55.09s214.97956°	-69° 21′ 13.1″-69.35365°	4.3′′	Good	1.2′	6.4 ks
Mean XRT rate: 7.9 (±1.3) ×10^-3 ct s^-1 Peak XRT rate: 9.4 (±1.7) ×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: 5.9 (±1.0) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 7.0 (±1.3) ×10^-3 ct s^-1 Mean XRT flux: 3.6 (±0.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 4.3 (±0.8) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.10×10^-3 [What is this?]
2 [details]	14h 21m 05.04s215.27099°	-69° 29′ 29.7″-69.49158°	6.4′′	Poor	10.7′	5.4 ks
Mean XRT rate: 0.00 (±0.00) ×10^-1 ct s^-1 Peak XRT rate: 0.00 (±0.00) ×10^-1 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 2.18 (+1.17, -0.92) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 2.18 (+1.17, -0.92) ×10^-3 ct s^-1 Mean XRT flux: 2.8 (+1.5, -1.2) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 2.8 (+1.5, -1.2) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.03 [What is this?]
3 [details]	14h 21m 18.44s215.32683°	-69° 14′ 13.3″-69.23702°	6.0′′	Reasonable	11.3′	5.6 ks
Mean XRT rate: 2.0 (±0.7) ×10^-3 ct s^-1 Peak XRT rate: 2.0 (±0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (PSPC count-rate) Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.89×10^-2 [What is this?]
4 [details]	14h 20m 41.55s215.17314°	-69° 27′ 01.7″-69.45046°	7.8′′	Reasonable	7.5′	6.2 ks
Mean XRT rate: 1.1 (±0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.1 (±0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 5.8 (±2.8) ×10^-4 ct s^-1 Peak XRT rate converted to PSPC: 5.8 (±2.8) ×10^-4 ct s^-1 Mean XRT flux: 9 (±4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 9 (±4) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.89×10^-2 [What is this?]
5 [details]	14h 21m 12.25s215.30104°	-69° 14′ 55.8″-69.24885°	5.7′′	Good	10.4′	5.9 ks
Mean XRT rate: 1.2 (±0.6) ×10^-3 ct s^-1 Peak XRT rate: 1.2 (±0.6) ×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: 2.1 (±1.0) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 2.1 (±1.0) ×10^-3 ct s^-1 Mean XRT flux: 1.7 (±0.8) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.7 (±0.8) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.03 [What is this?]

Image

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FITS image.

Exposure map

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FITS exposure map.