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TILED_GRB00043

GRB

GRB 150428C: Swift observation summary

About tiled field analysis.

So far 8 fields have been scheduled for observations. Data are available and processed for 7 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.

• 20503 — 270 s of cleaned data taken between 2015-04-28 12:53:37 and 2015-04-28 12:58:07
• 20504 — 265 s of cleaned data taken between 2015-04-28 12:58:33 and 2015-04-28 13:02:58
• 20505 — 265 s of cleaned data taken between 2015-04-28 13:03:22 and 2015-04-28 13:07:48
• 20507 — 382 s of cleaned data taken between 2015-04-28 14:30:55 and 2015-04-28 16:16:55
• 20508 — 456 s of cleaned data taken between 2015-04-28 14:35:37 and 2015-04-28 16:14:22
• 20509 — 433 s of cleaned data taken between 2015-04-28 14:40:15 and 2015-04-28 16:10:28

1 fields were processed but not included in the analysis. This is because, after standard processing and the removal of times contaminated by light reflected off the bright Earth, there was too little data (<100 s) for source detection to be performed.

Probable afterglow details

A source was found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err901	Detection Flag2	Dist from MAXI pos	Exposure	Notes	Vizier
1 [details]	04h 02m 37.39s60.65578°	+67° 42′ 51.7″67.71436°	8.8′′	Good	11.2′	466 s	The source is fading. The source is brighter than the RASS limit.
Mean XRT rate: 0.19 (±0.04) ct s-1 Peak XRT rate: 0.19 (±0.04) ct s-1 RASS PSPC 3-σ upper limit: 0.03 ct s-1 (PSPC count-rate) Products: Light curve | Spectrum | Expected serendipitous sources: ~8.76×10-3 [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 2 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	Vizier
1 [details]	04h 02m 37.39s60.65578°	+67° 42′ 51.7″67.71436°	8.8′′	Good	11.2′	466 s	The source is fading. The source is brighter than the RASS limit.
Mean XRT rate: 0.19 (±0.04) ct s-1 Peak XRT rate: 0.19 (±0.04) ct s-1 RASS PSPC 3-σ upper limit: 0.03 ct s-1 (PSPC count-rate) Products: Light curve | Spectrum | Expected serendipitous sources: ~8.76×10-3 [What is this?]
2 [details]	04h 02m 08.32s60.53467°	+68° 01′ 23.9″68.02330°	5.8′′	Good	13.9′	400 s	A catalogued X-ray source matches this source's position: (Show) '1SXPS J040207.9+680124' is 2.2′′ away, err (3-σ)=6.7′′ (Swift-XRT/1SXPS)
Mean XRT rate: 1.9 (±0.8) ×10-2 ct s-1 Peak XRT rate: 1.9 (±0.8) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.03 ct s-1 (PSPC count-rate) Products: Light curve | Spectrum | Expected serendipitous sources: ~0.2 [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

FITS image.

Exposure map

FITS exposure map.

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Last updated 2015 Apr 29 at 07:32:19 UT
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