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GRB 180914B: Swift observation summary

Mission:Fermi/LAT
GRB RA:332.450°
GRB Dec:+24.880°
GRB Err:19.8 arcmin
T0:2018-09-14 18:22:40 UT
Galactic:82.47° -25.02°
Galactic NH:6.96× 1020 cm-2
Galactic E(B-V):0.0804254
Sun distance:145.79°
Sun angle:10.66 [hr] (East of Sun)
Moon distance:102.35°
Visibility of this field.
First slew:2018-09-15 17:33:47 UT
First observation:2018-09-15 17:21:39 UT
First analysis: UT

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 tiled field analysis.

So far 7 fields have been scheduled for observations. Data are available and processed for 7 of these. The list gives the exposure time used in source detection. If any individual sources were selected for follow-up observations, the source detection is not repeated for the follow up observations and the table below is not updated.

An additional 3 fields have also been used for follow up observations. These data are not searched for sources, but are used to update the light curves etc of any sources already found.

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 09m 26.46s +25° 03′ 51.4″ 5.4′′ Good 12.1′ 9.6 ks The source is fading with 3.9-σ significance.
The source is 3.8-σ above the RASS limit.
Vizier logo

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.


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
LAT pos
Exposure Notes Vizier
1
[details]
22h 09m 29.53s +24° 39′ 23.9″ 2.6′′ Good 14.0′ 5.4 ks Matches known X-ray source: 1RXS J220929.5+243926 (from ROSAT/RASSFSC), 7.562784018312″ away.
Matches SIMBAD source: 1RXS J220929.5+243926, 7.6″ away.
Vizier logo
2
[details]
22h 09m 26.46s +25° 03′ 51.4″ 5.4′′ Good 12.1′ 9.6 ks The source is fading with 3.9-σ significance.
The source is 3.8-σ above the RASS limit.
Vizier logo

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.

FITS image.

Image of all observations processed so far

Exposure map

FITS exposure map.

Exposure map of all observations processed so far