ZTF20acozryr: Swift observation summary

Mission:	ZTF/IPN
GRB RA:	42.185°
GRB Dec:	+12.137°
GRB Err:	0.6 arcsec
T0:	2020-11-04 08:47:11 UT
Galactic:	162.68° -41.51°
Galactic N_H:	9.02× 10²⁰ cm^-2
Galactic E(B-V):	0.1489491

Sun distance:	175.95°
Sun angle:	11.85 [hr](West of Sun)
Moon distance:	40.17°
Visibility of this field.

Data analysed so far:

ObsID: 00021039001 with 0.7 ks exposure.
ObsID: 00021039002 with 0.5 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 ZTF pos	Exposure	Notes	Vizier
1 [details]	02h 48m 44.21s42.18421°	+12° 08′ 17.6″12.13822°	5.3′′	Good	5.2′′	1.2 ks	The source is 4.9-σ above the 2SXPS limit.
Mean XRT rate: 1.5 (+0.5, -0.4) ×10^-2 ct s^-1 Peak XRT rate: 1.5 (+0.5, -0.4) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~2.60×10^-6 [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 2 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from ZTF pos	Exposure	Notes
1 [details]	02h 48m 44.21s42.18421°	+12° 08′ 17.6″12.13822°	5.3′′	Good	5.2′′	1.2 ks	The source is 4.9-σ above the 2SXPS limit.
Mean XRT rate: 1.5 (+0.5, -0.4) ×10^-2 ct s^-1 Peak XRT rate: 1.5 (+0.5, -0.4) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (XRT equiv count-rate) Products: Light curve \| Expected serendipitous sources: ~2.60×10^-6 [What is this?]
2 [details]	02h 48m 35.54s42.14809°	+12° 00′ 30.8″12.00855°	2.1′′	Good	8.0′	1.2 ks	Matches known X-ray source: 2SXPS J024835.4+120035 (from 2SXPS), 3.3″ away. Matches SIMBAD source: 2MASX J02483563+1200310, 3.5″ away.
Mean XRT rate: 7.7 (±1.0) ×10^-2 ct s^-1 Peak XRT rate: 8.7 (±1.6) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 5.8 (±0.7) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 6.6 (±1.2) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~3.07×10^-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.

Image

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FITS image.

Exposure map

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FITS exposure map.