GRB 200325B: Swift observation summary

Mission:	Fermi/GBM
GRB RA:	167.554°
GRB Dec:	+27.820°
GRB Err:	60 arcsec
T0:	2020-03-25 14:52:51 UT
Galactic:	205.28° +67.58°
Galactic N_H:	1.82× 10²⁰ cm^-2
Galactic E(B-V):	0.02465631

Sun distance:	145.66°
Sun angle:	10.84 [hr] (East of Sun)
Moon distance:	136.80°
Visibility of this field.

Data analysed so far:

ObsID: 00020978001 with 1.1 ks exposure.

About ToO analysis.

Probable afterglow details

A source was found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Fermi/GBM pos	Exposure	Notes	Vizier
1 [details]	11h 10m 12.91s167.55381°	+27° 49′ 10.5″27.81959°	4.9′′	Good	1.6′′	4.6 ks	The source is fading with 3.9-σ significance.
Mean XRT rate: 2.0 (±0.5) ×10^-2 ct s^-1 Peak XRT rate: 2.0 (±0.5) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.06 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 8.2 (±2.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 8.2 (±2.1) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~4.15×10^-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 1 sources have been found in the XRT data. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Fermi/GBM pos	Exposure	Notes	Vizier
1 [details]	11h 10m 12.91s167.55381°	+27° 49′ 10.5″27.81959°	4.9′′	Good	1.6′′	4.6 ks	The source is fading with 3.9-σ significance.
Mean XRT rate: 2.0 (±0.5) ×10^-2 ct s^-1 Peak XRT rate: 2.0 (±0.5) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.06 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 8.2 (±2.1) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 8.2 (±2.1) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~4.15×10^-4 [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.