GRB 171124A: Swift observation summary

Mission:	Fermi/LAT
GRB RA:	335.520°
GRB Dec:	+35.220°
GRB Err:	12.0 arcmin
T0:	2017-11-24 05:37:35 UT
Galactic:	91.46° -18.37°
Galactic N_H:	9.17× 10²⁰ cm^-2
Galactic E(B-V):	0.1224211

Sun distance:	106.01°
Sun angle:	6.37 [hr] (East of Sun)
Moon distance:	59.81°
Visibility of this field.

Data analysed so far:

ObsID: 00020784001 with 4.9 ks exposure.

Source 2 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 LAT pos	Exposure	Notes	Vizier
2 [details]	22h 21m 54.27s335.47613°	+35° 19′ 55.3″35.33203°	2.2′′	Good	7.1′	10.1 ks	The source is fading with 3.8-σ significance.
Mean XRT rate: 2.45 (±0.28) ×10^-2 ct s^-1 Peak XRT rate: 2.6 (±0.6) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.9 (±0.8) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.4 (±1.6) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.04 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-18.37°

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 4 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from LAT pos	Exposure	Notes
1 [details]	22h 21m 41.23s335.42181°	+35° 08′ 55.4″35.14873°	2.5′′	Good	6.4′	10.1 ks
Mean XRT rate: 6.7 (±1.0) ×10^-3 ct s^-1 Peak XRT rate: 7.0 (±1.4) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.85 (+0.28, -0.27) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.9 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.3 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-18.37°
2 [details]	22h 21m 54.27s335.47613°	+35° 19′ 55.3″35.33203°	2.2′′	Good	7.1′	10.1 ks	The source is fading with 3.8-σ significance.
Mean XRT rate: 2.45 (±0.28) ×10^-2 ct s^-1 Peak XRT rate: 2.6 (±0.6) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 6.9 (±0.8) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.4 (±1.6) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.04 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-18.37°
3 [details]	22h 21m 30.42s335.37673°	+35° 09′ 49.7″35.16381°	4.6′′	Good	7.8′	10.1 ks
Mean XRT rate: 3.2 (±0.7) ×10^-3 ct s^-1 Peak XRT rate: 3.2 (±0.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.3 (±0.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.3 (±0.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~1.0 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-18.37°
4 [details]	22h 21m 59.02s335.49592°	+35° 09′ 48.2″35.16340°	2.8′′	Good	3.6′	10.1 ks
Mean XRT rate: 4.8 (±0.9) ×10^-3 ct s^-1 Peak XRT rate: 5.6 (±1.3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.03 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 2.2 (±0.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 2.6 (±0.6) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.5 [What is this?] Note: this is extragalactic sources only, whereas the GRB trigger is at b=-18.37°

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

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FITS image.

Exposure map

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FITS exposure map.