Skip banner and navigation tools.

School of Physics & Astronomy

US Site | Italian Site | UK site

Home > GRB products > GRB 180409A

TILED_GRB00069

NEWGRB

69

/xrt_products

GRB 180409A: Swift observation summary

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 tiled field analysis.

So far 3 fields have been scheduled for observations. Data are available and processed for 5 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.

• 20790 — 50 s of cleaned data taken between 2018-04-09 23:06:41 and 2018-04-09 23:08:36
• 20791 — 887 s of cleaned data taken between 2018-04-09 23:08:41 and 2018-04-10 03:41:47
• 20792 — 882 s of cleaned data taken between 2018-04-09 23:14:20 and 2018-04-10 04:08:03
• 20793 — 925 s of cleaned data taken between 2018-04-09 23:20:00 and 2018-04-10 03:45:49
• 20794 — 812 s of cleaned data taken between 2018-04-09 23:25:29 and 2018-04-10 04:10:48

An additional 2 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 IPN pos	Exposure	Notes	Vizier
1 [details]	11h 43m 22.33s175.84306°	+36° 14′ 00.7″36.23354°	3.1′′	Good	4.5′	5.7 ks	The source is fading with 3.5-σ significance.
Mean XRT rate: 7.4 (+1.5, -1.4) ×10-3 ct s-1 Peak XRT rate: 2.7 (±0.7) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.07 ct s-1 (XRT equiv count-rate) Mean XRT flux: 3.1 (±0.6) ×10-13 erg cm-1s-1 Peak XRT flux: 1.14 (±0.28) ×10-12 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position Expected serendipitous sources: ~0.5 [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.

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 IPN pos	Exposure	Notes	Vizier
1 [details]	11h 43m 22.33s175.84306°	+36° 14′ 00.7″36.23354°	3.1′′	Good	4.5′	5.7 ks	The source is fading with 3.5-σ significance.
Mean XRT rate: 7.4 (+1.5, -1.4) ×10-3 ct s-1 Peak XRT rate: 2.7 (±0.7) ×10-2 ct s-1 RASS PSPC 3-σ upper limit: 0.07 ct s-1 (XRT equiv count-rate) Mean XRT flux: 3.1 (±0.6) ×10-13 erg cm-1s-1 Peak XRT flux: 1.14 (±0.28) ×10-12 erg cm-1s-1 Products: Light curve | Spectrum | Enhanced position Expected serendipitous sources: ~0.5 [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

Select image style: Draggable PNG | JS9.

Magnify image and make scrollable?

FITS image.

---

Exposure map

Magnify exposure map and make scrollable?

FITS exposure map.