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Swift Trigger: 568849

Presumed name: GRB 130831A

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Related pages: Burst Analyser | Enhanced position | Light curve | Spectrum | Image | XRT Catalogue entry | Download obs data | GCN Notices

BAT	23h 54m 35.76s, +29° 26′ 52.8″
position:	(358.649, +29.448 ± 180″)
XRT	23h 54m 29.75s, +29° 25′ 42.5″
position:	(358.62394, 29.42847 ± 3.6″)
UVOT	23h 54m 29.88s, +29° 25′ 46.2″
position:	(358.6245, +29.4295 ± 0.7″)
Galactic NHI:	4.80×1020 cm-2
Galactic E(B-V):	NED unavailable

Best RA:	23h 54m 29.88s	= 358.6245 d
Best Dec:	+29° 25′ 46.2″	= +29.4295 d
Gal Lat:	-31.82
Gal Long:	108.33
Sun angle:	137.88°, 10.7 hr West

¹Sper #4 auto processing.

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GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

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Sun angle for this burst.

UVOT data

Blink images with DSS (link via GSFC)

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XRT SPER data

SPER results page for this trigger.

There are 5 SPER messages, and 1 objects have been found

• • Object 1
  • RA (J2000) : 23 54 29.70 ( 358.62373)
  • Dec (J2000): +29 25 42.8 ( 29.42855)
  • Error (90%): 3.587"
  • Counts in Source: 670

See the SPER page for details of how this position was produced.

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Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Date reported	Source	Misc	Query
0.1′′	358.62454	29.42950		GCN #15139	GRB 130831A: Swift detection of a burst with an optical counterpart
0.4′′	358.62454	29.42961		GCN #15152	GRB 130831A: Optical Observations via Virtual Telescope
1.1′′	358.62417	29.42956		GCN #15164	GRB 130831A: Continued Skynet/PROMPT-SSO� PROMPT-CTIO and Yerkes-41 detections
1.1′′	358.62417	29.42956		GCN #15148	GRB 130831A: Skynet/PROMPT-SSO detections
1.5′′	358.62462	29.42989		GCN #15147	GRB 130831A: Enhanced Swift-XRT position
2.4′′	358.62375	29.42961		GCN #15156	GRB 130831A: THO optical observation
33.3′′	358.63500	29.43094		GCN #15155	GRB 130831A� Swift-BAT refined analysis
158.0′′	358.62178	29.38567		GCN #15161	GRB 130831A: T100 observations

There are 14 matches in total. See the full table for details.

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Catalogue Searches. Searched 3.33′ around XRT position

Click on the distance to view the full details (not available for sources from the SSS catalogue). Click on the column headers to sort the table on that column (click again to invert sort order).

SIMBAD

	RA*	Dec*	SIMBAD name		Query
173.4	358.6342	29.4758	NVSS J235432+292832

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table2	Observatory	Query

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*	Redshift		Catalogue	Query
16.8	358.6290	29.4299		B1=20.5, B2=21.3	USNO-B1
18.7	358.6220	29.4236		B=21.1, R=18.9	APM-N
18.9	358.6219	29.4235		B2=20.9, I=18.7, R1=19.5, R2=19.0	USNO-B1
29.4	358.6331	29.4267		B=19.3, R=17.2	APM-N
34.4	358.6276	29.4375		B1=21.1, B2=21.2, R2=20.0	USNO-B1
35.3	358.6352	29.4281		B1=18.2, B2=18.3, I=15.8, R1=16.6, R2=16.1	USNO-B1
44.7	358.6382	29.4284		B=21.7, R=20.0	APM-N
45.6	358.6246	29.4158		B=21.8, R=20.0	APM-N
51.0	358.6300	29.4416		B1=19.8, B2=18.7, I=17.4	USNO-B1
51.4	358.6303	29.4416		B=20.4, R=18.1	APM-N

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

There are 146 galaxies within the position error. The full list is here.

* RA/Dec in equinox J2000

Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example

Stars

	RA*	Dec*		Catalogue	Query
29.1	358.6330	29.4266	B1=19.0, B2=19.1, I=17.0, R1=18.1, R2=17.2	USNO-B1
29.2	358.6330	29.4265	h=15.6, j=16.4, k=15.5	2MASS
35.4	358.6352	29.4280	h=14.7, j=15.4, k=14.6	2MASS
50.6	358.6302	29.4415	h=15.9, j=16.7, k=15.2	2MASS
52.5	358.6205	29.4428	B1=19.4, B2=20.0, I=18.8, R1=19.3, R2=19.4	USNO-B1
57.9	358.6343	29.4151	B1=21.2, B2=20.3, I=18.6, R2=19.7	USNO-B1
63.7	358.6381	29.4411	h=13.5, j=14.1, k=13.2	2MASS
63.9	358.6039	29.4317	B2=21.2, R1=19.9, R2=20.0	USNO-B1
65.3	358.6382	29.4417	B1=17.0, B2=17.0, R1=15.2, R2=14.4	USNO-B1
68.3	358.6381	29.4428	B1=14.9, B2=15.3, I=13.2, R1=13.7, R2=13.5	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 128 stars within the position error. The full list is here.

* RA/Dec in equinox J2000

Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example.