GRB 240828B: Swift observation summary

Mission:	SVOM/ECLAIRs
GRB RA:	63.364°
GRB Dec:	+16.708°
GRB Err:	15.0 arcmin
T0:	2024-08-28 13:11:21 UT
Galactic:	177.10° -24.27°
Galactic N_H:	1.58× 10²¹ cm^-2
Galactic E(B-V):	0.5807077

Sun distance:	90.89°
Sun angle:	6.25 [hr](West of Sun)
Moon distance:	29.15°
Visibility of this field.

Data analysed so far:

ObsID: 00021706001 with 2.9 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 SVOM/ECLAIRs pos	Exposure	Notes	Vizier
1 [details]	04h 13m 50.39s63.45995°	+16° 42′ 56.2″16.71561°	2.6′′	Good	5.5′	2.9 ks	The source is 3.3-σ above the RASS limit.
Mean XRT rate: 6.3 (±0.5) ×10^-2 ct s^-1 Peak XRT rate: 0.137 (±0.028) ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.03 (±0.26) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 6.6 (±1.4) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [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. 0 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from SVOM/ECLAIRs pos	Exposure	Notes
1 [details]	04h 13m 50.39s63.45995°	+16° 42′ 56.2″16.71561°	2.6′′	Good	5.5′	2.9 ks	The source is 3.3-σ above the RASS limit.
Mean XRT rate: 6.3 (±0.5) ×10^-2 ct s^-1 Peak XRT rate: 0.137 (±0.028) ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.03 (±0.26) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 6.6 (±1.4) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	04h 14m 11.41s63.54752°	+16° 36′ 37.1″16.61032°	6.4′′	Good	12.1′	2.9 ks
Mean XRT rate: 4.4 (+2.1, -1.6) ×10^-3 ct s^-1 Peak XRT rate: 4.4 (+2.1, -1.6) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 2170725201708590.00 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 3.7 (+1.7, -1.3) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 3.7 (+1.7, -1.3) ×10^-10 erg cm^-1s^-1 Products: Spectrum \| Expected serendipitous sources: ~0.00×10⁺⁰ [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.