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Home > GRB products > GRB 150202B

TILED_GRB00039

GRB

GRB 150202B: Swift observation summary

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 2 fields have been scheduled for observations. Data are available and processed for 2 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.

• 20475 — 2.4 ks of cleaned data taken between 2015-02-04 02:29:21 and 2015-02-04 03:10:03
• 20476 — 4.2 ks of cleaned data taken between 2015-02-04 04:04:45 and 2015-02-08 23:26:23

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]	05h 47m 49.63s86.95677°	+58° 49′ 47.9″58.82998°	4.1′′	Good	4.6′	3.7 ks	The source is fading.
Mean XRT rate: 1.8 (±0.3) ×10-2 ct s-1 Peak XRT rate: 2.4 (±0.6) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.02 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.022 (±0.004) ct s-1 Peak XRT rate converted to PSPC: 0.029 (±0.008) ct s-1 Mean XRT flux: 6.1 (±1.0) ×10-13 erg cm-1s-1 Peak XRT flux: 8.1 (±2.1) ×10-13 erg cm-1s-1 Products: Light curve | Spectrum | Expected serendipitous sources: ~0.1 [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. 2 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err901	Detection Flag2	Dist from LAT pos	Exposure	Notes	Vizier
1 [details]	05h 47m 49.63s86.95677°	+58° 49′ 47.9″58.82998°	4.1′′	Good	4.6′	3.7 ks	The source is fading.
Mean XRT rate: 1.8 (±0.3) ×10-2 ct s-1 Peak XRT rate: 2.4 (±0.6) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.02 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.022 (±0.004) ct s-1 Peak XRT rate converted to PSPC: 0.029 (±0.008) ct s-1 Mean XRT flux: 6.1 (±1.0) ×10-13 erg cm-1s-1 Peak XRT flux: 8.1 (±2.1) ×10-13 erg cm-1s-1 Products: Light curve | Spectrum | Expected serendipitous sources: ~0.1 [What is this?]
2 [details]	05h 46m 21.98s86.59160°	+58° 55′ 21.7″58.92270°	4.4′′	Good	9.7′	3.7 ks
Mean XRT rate: 6.6 (±1.8) ×10-3 ct s-1 Peak XRT rate: 8 (±4) ×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: 5.9 (±1.6) ×10-3 ct s-1 Peak XRT rate converted to PSPC: 8 (±3) ×10-3 ct s-1 Mean XRT flux: 2.9 (±0.8) ×10-13 erg cm-1s-1 Peak XRT flux: 3.7 (±1.5) ×10-13 erg cm-1s-1 Products: Light curve | Spectrum | Expected serendipitous sources: ~0.6 [What is this?]
3 [details]	05h 47m 10.39s86.79330°	+58° 47′ 07.4″58.78538°	5.6′′	Good	7.6′	3.9 ks	This source may be affected by optical loading A SIMBAD object matches this source's position: (Show) HD 38128, 0.9′′ away
Mean XRT rate: 4.3 (±1.5) ×10-3 ct s-1 Peak XRT rate: 4.3 (±2.8) ×10-3 ct s-1 RASS PSPC 3-σ upper limit: 0.02 ct s-1 (PSPC count-rate) Products: Light curve | Spectrum | Expected serendipitous sources: ~1.1 [What is this?]
4 [details]	05h 47m 17.26s86.82191°	+58° 58′ 28.7″58.97465°	5.0′′	Good	5.1′	5.8 ks	This source may be affected by optical loading A SIMBAD object matches this source's position: (Show) HD 38127, 2.6′′ away
Mean XRT rate: 2.8 (±1.1) ×10-3 ct s-1 Peak XRT rate: 2.8 (±1.1) ×10-3 ct s-1 RASS PSPC 3-σ upper limit: 0.06 ct s-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 4.6 (±1.8) ×10-3 ct s-1 Peak XRT rate converted to PSPC: 4.6 (±1.8) ×10-3 ct s-1 Mean XRT flux: 5.6 (±2.1) ×10-14 erg cm-1s-1 Peak XRT flux: 5.6 (±2.1) ×10-14 erg cm-1s-1 Products: Light curve | Spectrum | Expected serendipitous sources: ~1.6 [What is this?]
5 [details]	05h 46m 50.84s86.71183°	+58° 43′ 27.4″58.72429°	4.8′′	Good	12.1′	3.4 ks
Mean XRT rate: 6.6 (±2.3) ×10-3 ct s-1 Peak XRT rate: 9 (±4) ×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: 7.4 (±2.6) ×10-3 ct s-1 Peak XRT rate converted to PSPC: 0.011 (±0.004) ct s-1 Mean XRT flux: 2.2 (±0.8) ×10-13 erg cm-1s-1 Peak XRT flux: 3.2 (±1.3) ×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

FITS image.

Exposure map

FITS exposure map.

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Last updated 2015 Feb 10 at 09:20:13 UT
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