IGR J16318-4848: X-ray transient

Discovery

Date: Mon, 3 Feb 2003 14:50:44 +0900 (JST)
Subject: [vsnet-alert 7637] X-ray transient IGR J16318-4848

X-ray transient IGR J16318-4848

According to IAUC No. 8063, INTEGRAL satellite detected a new X-ray transient. The position is

   16h 31m 52s
   -48o 48'.5
   (J2000.0, uncertainty 2')

   The intensity source was reported to be 50-100 mCrab (15-50 keV).

   A search for optical/IR counterpart is encouraged.

Regards,
Taichi Kato
VSNET Collaboration team

Look for counterparts!!

(CCD image of the field of the X-ray transient taken by Berto Monard on 2003 Feb. 4.)

(vsnet-campaign-xray 188)

Date: Tue, 04 Feb 2003 10:28:57 +0200
From: "Berto Monard" 
Subject: [vsnet-alert 7638] IGR J16318-4848 / search for optical counterpart

Unfiltered CCD images of the reported X Ray transient IGR J16318-4848 were taken on UT 2003 Feb 04.05 at the Bronberg Observatory near Pretoria.

By stacking a number of the best images, a deep field image with a limiting magnitude beyound 19.5CR was obtained. It was inspected inside a radius of 2.5', centered on the position given in IAUC No. 8063.

In comparison to images of the Digitized Sky Surveys of generation 1 and generation 2/red and 2/ir no new star was found down to a magnitude of 19.0CR. There was no obviously brightened star either.

This message can be cited and the image can be made available.

Regards,

Berto Monard
Bronberg Observatory / CBA Pretoria

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