GRB 181013A: Swift observation summary

Mission:	Swift/BAT
GRB RA:	207.601°
GRB Dec:	+40.179°
GRB Err:	3.0 arcmin
T0:	2018-10-13 02:39:29 UT
Galactic:	83.60° +72.14°
Galactic N_H:	9.06× 10¹⁹ cm^-2
Galactic E(B-V):	0.009038793

Sun distance:	48.67°
Sun angle:	0.63 [hr] (East of Sun)
Moon distance:	69.05°
Visibility of this field.

Data analysed so far:

ObsID: 00866783000 with 0.2 ks exposure.
ObsID: 00866783001 with 6.9 ks exposure.
ObsID: 00866783002 with 5.0 ks exposure.

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 ToO analysis.

Probable afterglow details

A source was found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT pos	Exposure	Notes	Vizier
1 [details]	13h 50m 36.51s207.65212°	+40° 06′ 30.3″40.10843°	1.4′′	Good	4.8′	16.6 ks	The source is fading with 7.0-σ significance. The source is 7.0-σ above the RASS limit.
Mean XRT rate: 0.174 (±0.006) ct s^-1 Peak XRT rate: 31 (±4) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.77 (±0.23) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 1.22 (±0.17) ×10^-9 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~4.03×10^-4 [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 2SXPS 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 30 sources have been found in the XRT data. 7 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT pos	Exposure	Notes
1 [details]	13h 50m 36.51s207.65212°	+40° 06′ 30.3″40.10843°	1.4′′	Good	4.8′	16.6 ks	The source is fading with 7.0-σ significance. The source is 7.0-σ above the RASS limit.
Mean XRT rate: 0.174 (±0.006) ct s^-1 Peak XRT rate: 31 (±4) ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.77 (±0.23) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 1.22 (±0.17) ×10^-9 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~4.03×10^-4 [What is this?]
2 [details]	13h 50m 02.55s207.51064°	+40° 22′ 09.2″40.36922°	5.6′′	Good	12.1′	14.2 ks	Matches known X-ray source: 1RXS J135002.0+402217 (from ROSAT/RASSFSC), 10.1″ away. Matches SIMBAD source: SDSS J135002.97+402212.2, 5.8″ away.
Mean XRT rate: 1.8 (±0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.8 (±0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.2 (±1.1) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 4.2 (±1.1) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~2.8 [What is this?]
3 [details]	13h 51m 10.90s207.79542°	+40° 04′ 21.7″40.07269°	6.9′′	Good	11.0′	10.9 ks
Mean XRT rate: 1.7 (+0.6, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.7 (+0.6, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.7 (+2.1, -1.7) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 5.7 (+2.1, -1.7) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~2.6 [What is this?]
4 [details]	13h 50m 53.37s207.72239°	+40° 04′ 27.9″40.07442°	5.7′′	Poor	8.4′	16.3 ks
Mean XRT rate: 4.5 (+2.9, -2.1) ×10^-4 ct s^-1 Peak XRT rate: 4.5 (+2.9, -2.1) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~6.5 [What is this?]
5 [details]	13h 50m 43.88s207.68285°	+40° 13′ 17.4″40.22150°	6.1′′	Good	4.5′	16.6 ks	Matches SIMBAD source: SDSS J135043.60+401317.7, 3.2″ away.
Mean XRT rate: 1.7 (±0.4) ×10^-3 ct s^-1 Peak XRT rate: 2.5 (+1.4, -1.0) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.6 (+1.1, -1.0) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 6.9 (+3.8, -2.8) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.4 [What is this?]
6 [details]	13h 50m 08.97s207.53736°	+40° 07′ 11.7″40.11993°	7.2′′	Poor	4.6′	16.6 ks	Matches known X-ray source: 1WGA J1350.1+4007 (from ROSAT/WGACAT), 28.8″ away.
Mean XRT rate: 1.9 (±0.4) ×10^-3 ct s^-1 Peak XRT rate: 3.9 (+1.5, -1.2) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.3 (+1.3, -1.2) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.1 (+0.4, -0.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.4 [What is this?]
7 [details]	13h 50m 23.77s207.59904°	+40° 15′ 36.0″40.26000°	10.4′′	Poor	4.9′	16.6 ks	Matches SIMBAD source: 2MASX J13502372+4015418, 6.1″ away.
Mean XRT rate: 2.1 (+0.5, -0.4) ×10^-3 ct s^-1 Peak XRT rate: 2.7 (+1.5, -1.1) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 8.8×10^-3 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.2 (±0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.9 (+1.6, -1.2) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.4 [What is this?]
8 [details]	13h 50m 22.70s207.59460°	+40° 20′ 20.2″40.33894°	6.9′′	Poor	9.6′	16.6 ks
Mean XRT rate: 4.9 (+2.7, -2.1) ×10^-4 ct s^-1 Peak XRT rate: 4.9 (+2.7, -2.1) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~9.8 [What is this?]
9 [details]	13h 50m 14.80s207.56167°	+40° 05′ 48.1″40.09670°	5.1′′	Good	5.3′	16.6 ks
Mean XRT rate: 1.2 (±0.4) ×10^-3 ct s^-1 Peak XRT rate: 1.2 (±0.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.0 (±0.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.0 (±0.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.0 [What is this?]
10 [details]	13h 50m 11.55s207.54813°	+40° 22′ 28.7″40.37465°	6.9′′	Poor	12.0′	16.6 ks
Mean XRT rate: 1.1 (+0.4, -0.3) ×10^-3 ct s^-1 Peak XRT rate: 1.1 (+0.4, -0.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~5.3 [What is this?]
11 [details]	13h 50m 26.68s207.61119°	+40° 08′ 14.4″40.13732°	10.0′′	Poor	2.5′	16.6 ks
Mean XRT rate: 9.3 (+3.4, -2.8) ×10^-4 ct s^-1 Peak XRT rate: 9.3 (+3.4, -2.8) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.4 (+2.7, -2.2) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 7.4 (+2.7, -2.2) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.5 [What is this?]
12 [details]	13h 50m 38.28s207.65951°	+40° 11′ 56.9″40.19915°	7.6′′	Poor	2.9′	16.6 ks	Matches SIMBAD source: FIRST J135038.0+401153, 3.8″ away.
Mean XRT rate: 5.1 (+2.8, -2.2) ×10^-4 ct s^-1 Peak XRT rate: 5.1 (+2.8, -2.2) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.8 (+2.1, -1.6) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 3.8 (+2.1, -1.6) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.9 [What is this?]
13 [details]	13h 49m 33.20s207.38835°	+40° 14′ 47.7″40.24658°	6.6′′	Poor	10.6′	16.6 ks
Mean XRT rate: 7.1 (+3.4, -2.6) ×10^-4 ct s^-1 Peak XRT rate: 7.1 (+3.4, -2.6) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~8.1 [What is this?]
14 [details]	13h 50m 49.72s207.70719°	+40° 11′ 15.4″40.18762°	6.2′′	Poor	4.9′	16.6 ks
Mean XRT rate: 9 (+4, -3) ×10^-4 ct s^-1 Peak XRT rate: 9 (+4, -3) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.7 (+1.6, -1.3) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 3.7 (+1.6, -1.3) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.3 [What is this?]
15 [details]	13h 49m 34.92s207.39552°	+40° 07′ 31.3″40.12537°	7.2′′	Poor	10.0′	16.6 ks
Mean XRT rate: 7.2 (+3.3, -2.6) ×10^-4 ct s^-1 Peak XRT rate: 7.2 (+3.3, -2.6) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~7.1 [What is this?]
16 [details]	13h 50m 04.64s207.51933°	+40° 08′ 50.7″40.14741°	5.4′′	Reasonable	4.2′	16.6 ks	Matches SIMBAD source: GALEX 2687006328700801321, 2.3″ away.
Mean XRT rate: 6.0 (+2.9, -2.3) ×10^-4 ct s^-1 Peak XRT rate: 6.0 (+2.9, -2.3) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.26 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (+0.8, -0.6) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.6 (+0.8, -0.6) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.6 [What is this?]
17 [details]	13h 50m 57.65s207.74021°	+40° 14′ 06.5″40.23514°	6.4′′	Reasonable	7.2′	16.6 ks
Mean XRT rate: 1.1 (+0.4, -0.3) ×10^-3 ct s^-1 Peak XRT rate: 1.1 (+0.4, -0.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.49 (+1.18, -0.99) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 3.49 (+1.18, -0.99) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~2.1 [What is this?]
18 [details]	13h 50m 29.48s207.62284°	+40° 22′ 44.4″40.37901°	7.4′′	Poor	12.0′	10.0 ks
Mean XRT rate: 1.6 (+0.6, -0.5) ×10^-3 ct s^-1 Peak XRT rate: 1.6 (+0.6, -0.5) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 4.5 (+1.8, -1.4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 4.5 (+1.8, -1.4) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~3.4 [What is this?]
19 [details]	13h 50m 20.37s207.58487°	+40° 00′ 45.3″40.01259°	6.3′′	Poor	10.0′	14.4 ks
Mean XRT rate: 9 (+4, -3) ×10^-4 ct s^-1 Peak XRT rate: 9 (+4, -3) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~5.2 [What is this?]
20 [details]	13h 51m 11.54s207.79806°	+40° 13′ 33.5″40.22598°	5.6′′	Reasonable	9.5′	16.3 ks
Mean XRT rate: 8.6 (+3.5, -2.9) ×10^-4 ct s^-1 Peak XRT rate: 8.6 (+3.5, -2.9) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.5 (+0.6, -0.5) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.5 (+0.6, -0.5) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~5.1 [What is this?]
21 [details]	13h 50m 13.60s207.55667°	+40° 07′ 35.9″40.12664°	8.0′′	Poor	3.7′	16.6 ks
Mean XRT rate: 4.6 (+2.7, -2.1) ×10^-4 ct s^-1 Peak XRT rate: 4.6 (+2.7, -2.1) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.4 (+1.4, -1.1) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 2.4 (+1.4, -1.1) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~1.4 [What is this?]
22 [details]	13h 50m 04.38s207.51825°	+40° 18′ 49.4″40.31373°	6.2′′	Reasonable	8.9′	16.6 ks
Mean XRT rate: 8.5 (+3.5, -2.8) ×10^-4 ct s^-1 Peak XRT rate: 8.5 (+3.5, -2.8) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.06 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.2 (+0.5, -0.4) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.2 (+0.5, -0.4) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~4.6 [What is this?]
23 [details]	13h 49m 52.03s207.46679°	+40° 06′ 28.5″40.10791°	6.2′′	Poor	7.5′	16.6 ks	Matches SIMBAD source: NVSS J134952+400622, 6.9″ away.
Mean XRT rate: 7.7 (+3.4, -2.7) ×10^-4 ct s^-1 Peak XRT rate: 7.7 (+3.4, -2.7) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~3.7 [What is this?]
24 [details]	13h 49m 28.64s207.36935°	+40° 07′ 25.7″40.12381°	9.8′′	Poor	11.1′	12.9 ks
Mean XRT rate: 1.0 (+0.5, -0.4) ×10^-3 ct s^-1 Peak XRT rate: 1.0 (+0.5, -0.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~5.3 [What is this?]
25 [details]	13h 51m 14.82s207.81176°	+40° 17′ 23.8″40.28994°	5.9′′	Poor	11.7′	15.3 ks
Mean XRT rate: 1.1 (+0.5, -0.4) ×10^-3 ct s^-1 Peak XRT rate: 1.1 (+0.5, -0.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~5.6 [What is this?]
26 [details]	13h 50m 00.31s207.50129°	+40° 08′ 05.4″40.13482°	8.2′′	Poor	5.3′	16.6 ks
Mean XRT rate: 5.4 (+2.9, -2.3) ×10^-4 ct s^-1 Peak XRT rate: 5.4 (+2.9, -2.3) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~2.8 [What is this?]
27 [details]	13h 49m 46.40s207.44334°	+40° 11′ 26.1″40.19058°	6.2′′	Reasonable	7.3′	16.6 ks
Mean XRT rate: 5.6 (+2.8, -2.2) ×10^-4 ct s^-1 Peak XRT rate: 5.6 (+2.8, -2.2) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.08 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.7 (+0.9, -0.7) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 1.7 (+0.9, -0.7) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~5.1 [What is this?]
28 [details]	13h 50m 17.66s207.57357°	+40° 14′ 46.9″40.24637°	5.4′′	Good	4.2′	16.6 ks
Mean XRT rate: 9.8 (+3.4, -2.8) ×10^-4 ct s^-1 Peak XRT rate: 9.8 (+3.4, -2.8) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.14 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.5 (+0.9, -0.7) ×10^-14 erg cm^-1s^-1 Peak XRT flux: 2.5 (+0.9, -0.7) ×10^-14 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Expected serendipitous sources: ~0.8 [What is this?]
29 [details]	13h 50m 00.76s207.50316°	+40° 03′ 10.9″40.05303°	5.8′′	Reasonable	8.8′	16.6 ks
Mean XRT rate: 7.8 (+3.4, -2.7) ×10^-4 ct s^-1 Peak XRT rate: 7.8 (+3.4, -2.7) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.01 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~5.0 [What is this?]
30 [details]	13h 49m 59.45s207.49771°	+40° 11′ 27.4″40.19093°	6.7′′	Poor	4.8′	16.6 ks
Mean XRT rate: 6.6 (+3.2, -2.6) ×10^-4 ct s^-1 Peak XRT rate: 6.6 (+3.2, -2.6) ×10^-4 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~1.8 [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

Select image style: Draggable PNG | JS9.

Magnify image and make scrollable?

FITS image.

Exposure map

Magnify exposure map and make scrollable?

FITS exposure map.