GRB 180305A: Swift observation summary

Mission:	Fermi/LAT
GRB RA:	49.670°
GRB Dec:	+32.100°
GRB Err:	6.6 arcmin
T0:	2018-03-05 09:26:03 UT
Galactic:	155.91° -21.18°
Galactic N_H:	1.23× 10²¹ cm^-2
Galactic E(B-V):	0.4239353

Sun distance:	71.49°
Sun angle:	4.25 [hr](East of Sun)
Moon distance:	146.80°
Visibility of this field.

Data analysed so far:

ObsID: 00020789001 with 4.7 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]	03h 18m 28.37s49.61821°	+32° 06′ 35.6″32.10990°	1.7′′	Good	2.7′	4.7 ks	The source is fading with 3.6-σ significance. The source is 4.2-σ above the RASS limit.
Mean XRT rate: 3.5 (±0.3) ×10^-2 ct s^-1 Peak XRT rate: 7.1 (±1.3) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.80 (±0.17) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 3.7 (±0.7) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~9.42×10^-3 [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 5 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from LAT pos	Exposure	Notes
1 [details]	03h 19m 01.93s49.75804°	+32° 10′ 28.1″32.17446°	2.7′′	Good	6.3′	4.7 ks
Mean XRT rate: 1.27 (±0.22) ×10^-2 ct s^-1 Peak XRT rate: 1.4 (±0.4) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.05 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.2 (±0.9) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.6 (±1.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.04 [What is this?]
2 [details]	03h 18m 28.37s49.61821°	+32° 06′ 35.6″32.10990°	1.7′′	Good	2.7′	4.7 ks	The source is fading with 3.6-σ significance. The source is 4.2-σ above the RASS limit.
Mean XRT rate: 3.5 (±0.3) ×10^-2 ct s^-1 Peak XRT rate: 7.1 (±1.3) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.80 (±0.17) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 3.7 (±0.7) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~9.42×10^-3 [What is this?]
3 [details]	03h 17m 45.71s49.44044°	+32° 03′ 40.0″32.06111°	5.4′′	Good	11.9′	4.1 ks
Mean XRT rate: 2.95 (+1.29, -1.00) ×10^-3 ct s^-1 Peak XRT rate: 2.95 (+1.29, -1.00) ×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: ~1.1 [What is this?]
4 [details]	03h 18m 36.16s49.65068°	+32° 03′ 09.9″32.05274°	3.3′′	Good	3.0′	4.7 ks	Matches known X-ray source: 1RXS J031836.9+320317 (from ROSAT/RASSFSC), 10.8″ away. Matches SIMBAD source: BD+31 579, 3.9″ away.
Mean XRT rate: 9.5 (+2.0, -1.9) ×10^-3 ct s^-1 Peak XRT rate: 1.06 (±0.22) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.07 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (±0.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.8 (±0.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.06 [What is this?]
5 [details]	03h 18m 39.62s49.66508°	+31° 54′ 19.6″31.90544°	5.6′′	Good	11.7′	2.4 ks
Mean XRT rate: 6.8 (+2.5, -2.0) ×10^-3 ct s^-1 Peak XRT rate: 6.8 (+2.5, -2.0) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~0.3 [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.

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Exposure map

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FITS exposure map.