GRB 121025A: Swift observation summary

Mission:	MAXI
GRB RA:	248.750°
GRB Dec:	+27.730°
GRB Err:	16.2 arcmin
T0:	2012-10-25 07:46:20 UT
Galactic:	47.30° +40.84°
Galactic N_H:	4.78× 10²⁰ cm^-2
Galactic E(B-V):	0.062 mag

Sun distance:	54.78°
Sun angle:	2.58 [hr] (East of Sun)
Moon distance:	92.98°
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 tiled field analysis.

So far 4 fields have been scheduled for observations. Data are available and processed for 4 of these. The list gives the exposure time used in source detection. If any individual sources were selected for follow-up observations, the source detection is not repeated for the follow up observations and the table below is not updated.

32609 — 1.6 ks of cleaned data taken between 2012-10-25 14:28:08 and 2012-10-25 22:50:24
32610 — 1.8 ks of cleaned data taken between 2012-10-25 16:05:20 and 2012-10-25 22:37:24
32611 — 1.5 ks of cleaned data taken between 2012-10-25 17:50:54 and 2012-10-25 22:44:46
32612 — 1.6 ks of cleaned data taken between 2012-10-25 16:15:54 and 2012-10-25 22:53:00

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 MAXI pos	Exposure	Notes
1 [details]	16h 33m 31.91s248.38294°	+27° 40′ 15.5″27.67097°	2.5′′ ^*	Good	19.8′	1.3 ks	A SIMBAD object matches this source's position: (Show) GRB 121025A, 0.7′′ away
Mean XRT rate: 2.5 (±0.5) ×10^-2 ct s^-1 Peak XRT rate: 2.5 (±0.6) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.039 (±0.008) ct s^-1 Peak XRT rate converted to PSPC: 0.039 (±0.010) ct s^-1 Mean XRT flux: 5.4 (±1.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.4 (±1.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.1 [What is this?]
2 [details]	16h 35m 05.03s248.77096°	+27° 38′ 07.2″27.63534°	4.0′′ ^*	Good	5.8′	2.4 ks
Mean XRT rate: 6.3 (±1.7) ×10^-3 ct s^-1 Peak XRT rate: 6.3 (±1.7) ×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: 8.3 (±2.2) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 8.3 (±2.2) ×10^-3 ct s^-1 Mean XRT flux: 2.1 (±0.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.1 (±0.6) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~1.1 [What is this?]
3 [details]	16h 34m 55.50s248.73124°	+28° 04′ 30.7″28.07518°	5.1′′	Good	20.7′	1.2 ks
Mean XRT rate: 1.3 (±0.4) ×10^-2 ct s^-1 Peak XRT rate: 1.3 (±0.4) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.023 (±0.006) ct s^-1 Peak XRT rate converted to PSPC: 0.023 (±0.006) ct s^-1 Mean XRT flux: 3.3 (±0.9) ×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: ~0.4 [What is this?]
4 [details]	16h 34m 12.84s248.55349°	+27° 29′ 53.4″27.49815°	5.8′′	Good	17.4′	1.1 ks
Mean XRT rate: 9 (±3) ×10^-3 ct s^-1 Peak XRT rate: 9 (±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: 7.7 (±2.5) ×10^-3 ct s^-1 Peak XRT rate converted to PSPC: 7.7 (±2.5) ×10^-3 ct s^-1 Mean XRT flux: 5.7 (±1.9) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.7 (±1.9) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.6 [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.