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Home > GRB region information > 821881

Swift Trigger: 821881

Presumed name: GRB 180404A

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

BAT	05h 34m 15.36s, -37° 10′ 12.0″
position:	(83.564, -37.170 ± 180″)
XRT	05h 34m 11.64s, -37° 10′ 06.2″
position:	(83.5485, -37.1684 ± 2.4″)
UVOT	05h 34m 11.62s, -37° 10′ 03.7″
position:	(83.5484, -37.1677 ± 0.7″)
Galactic NHI:	2.77×100 cm-2
Galactic E(B-V):	0.032 mag

Best RA:	05h 34m 11.62s	= 83.5484 d
Best Dec:	-37° 10′ 03.7″	= -37.1677 d
Gal Lat:	-30.66
Gal Long:	241.97
Sun angle:	78.23°, -4.7 hr East of Sun

¹Sper #5 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 6 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 05 34 11.65 (-37.1684)
  • Dec (J2000): -37 10 06.4 ( -37.16820)
  • Error (90%): 2.4
  • Counts in Source: 46

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
0.2′′	83.54846	-37.16775		GCN #22589	GRB 180404A: Swift detection of a burst with an optical afterglow
0.3′′	83.54850	-37.16775		GCN #22605	GRB 180404A: Swift/UVOT Detection
0.7′′	83.54863	-37.16781		GCN #22591	GRB 180404A: VLT/X-shooter redshift
2.3′′	83.54904	-37.16808		GCN #22592	GRB 180404A: Enhanced Swift-XRT position
24.1′′	83.54000	-37.16800		GCN #22599	GRB 180404A: Swift-BAT refined analysis

There are 11 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
196.3	83.5780	-37.1192	TYC 7068-364-1	B=12.11, G=11.304, H=9.983, J=10.263, K=9.936, V=11.27

* 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
17.5	83.5534	-37.1713		B2=20.4, R1=20.0, R2=20.0	USNO-B1
19.5	83.5537	-37.1711		Mag=20.0	NED
27.8	83.5433	-37.1749		B=22.3	SSS
29.4	83.5393	-37.1720		B=21.8	SSS
42.0	83.5490	-37.1801		I=18.9, R2=17.8	USNO-B1
44.1	83.5429	-37.1561		Mag=19.0	NED
48.2	83.5348	-37.1761		B2=21.0, R2=21.3	USNO-B1
51.5	83.5342	-37.1770		B2=19.2, I=18.6, R2=20.5	USNO-B1
62.7	83.5658	-37.1577		B=21.4, R2=19.9	SSS
63.5	83.5612	-37.1540		B=22.3	SSS

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

There are 77 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
4.5	83.5475	-37.1694	B2=20.6, I=18.1, R1=19.5, R2=19.8	USNO-B1
15.6	83.5447	-37.1653	B2=21.1, R2=20.7	USNO-B1
16.2	83.5448	-37.1650	B2=20.6, R1=20.4, R2=20.9	USNO-B1
30.5	83.5513	-37.1766	B2=20.6, I=18.6, R1=20.0, R2=20.6	USNO-B1
31.0	83.5514	-37.1767	h=15.9, j=16.3, k=15.7	2MASS
31.3	83.5378	-37.1666	B2=18.6, I=17.9, R1=17.8, R2=17.7	USNO-B1
31.6	83.5377	-37.1666	h=16.1, j=16.7, k=17.0	2MASS
42.9	83.5360	-37.1750	B2=19.2, I=18.0, R1=18.6, R2=18.7	USNO-B1
44.2	83.5495	-37.1807	B2=20.5, I=18.3, R1=19.2, R2=19.7	USNO-B1
46.6	83.5479	-37.1813	B2=20.6, I=19.0, R2=19.0	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 154 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.