GRB 090306B, detected in Swift/BAT slew data (Copete et al. GCN 8944), has been independently detected by the SPI Anti-Coincidence System (ACS) on-board INTEGRAL. The SPI-ACS light curve shows the peak of the burst at 2009-03-06T23:07:21.9 with a maximum count-rate of ~390 counts/50msec. The duration of the GRB is about 14 seconds. The SPI-ACS light curves are available (both as images and data...Full Text

IBAS Alert N. 5442 is not due to a real GRB, but to a burst from the currently active AXP 1E 1547.0-5408. The burst origin was not automatically recognized due to wrong satellite attitude information. This message can be cited. ...Full Text

A Swift/XRT observation performed on January 23 from 15:23 to 15:51 UT in Photon Counting mode shows the presence of a dust scattering halo around the position of the Anomalous X-ray Pulsar 1E1547.0-5408. A bright ring with a radius of about 1 arcmin is clearly visible, but the observation is too short to detect expansion. Assuming that this ring is due to the bright burst detected on Jan 22...Full Text

On 2009 Jan 22, the SPI Anti-Coincidence System (ACS) on-board INTEGRAL recorded two bright and long bursts from the AXP 1E1547.0-5408 that recently reactivated (GCN 8833, 8835, 8837, 8838). In both bursts, pulsations at the neutron star period of 2.1 s are clearly visible The start times, duration, and ACS peak count rates (Dt=50 ms) are the following: 1) 06:48:04.2 UT 8.4 s 1.5...Full Text

The SPI Anti-Coincidence System (ACS) on-board INTEGRAL has detected burst activity most likely arising from the AXP 1E1547.0-5408, as reported based on Swift/BAT (GCN 8834, 8833) and Fermi GBM data (GCN 8835). From 2009-01-22T00:42:05 until 10:49:56 UT, 167 short (from 50ms to 8s) intense bursts were detected with significance from 5 to 160 sigma (1e4 - 2e6 counts/s peak count rate). The SPI-ACS...Full Text

A GRB lasting about 20 s has been detected by IBAS in IBIS/ISGRI data at 16:20:36 UT on January 7th. The refined coordinates (J2000) are: RA = 284.8075 [degrees] DEC= 59.5924 [degrees] with an uncertainty of 1.5 arcmin (90% c.l.). A preliminary analysis gives a peak flux in the 20-200 keV range of about 1.6 ph/cmsq/s (1-s integration time) and a fluence over the same energy range of about 1...Full Text

A short hard GRB consisting of a single peak with duration of about 0.7 s has been detected by IBAS in IBIS/ISGRI data at 12:13:11 UT on December 26th. The refined coordinates (J2000) are: RA = 25.495 [degrees] DEC= -47.439 [degrees] with an uncertainty of 2.5 arcmin (90% c.l.). A preliminary analysis gives a peak flux in the 20-200 keV range of about 3 ph/cmq/s (0.2 s integration time)...Full Text

A GRB lasting about 20 s has been detected by IBAS in IBIS/ISGRI data at 16:44:55 UT on December 4th. The refined coordinates (J2000) are: RA = 349.7735 [degrees] DEC= -60.2213 [degrees] with an uncertainty of 2.3 arcmin (90% c.l.). A preliminary analysis gives a peak flux in the 20-200 keV range of about 0.7 ph/cmq/s (1-s integration time) and a fluence over the same energy range of about 7x10e-7...Full Text

A GRB lasting about 34 s has been detected by IBAS in IBIS/ISGRI data at 06:51:31 UT of October 16. The coordinates (J2000) are: RA = 255.5725 [degrees] DEC= -23.3301 [degrees] with an uncertainty of 1.5 arcmin (90% c.l.). The burst is composed by two distinct peaks, and a preliminary spectral analysis gives a peak flux in the 20-200 keV range of about 2.4 ph/cmsq/s (1-s integration time)...Full Text

The INTEGRAL satellite will observe the on going outburst of the AXP 1E 1547.0-5408 (Krimm et al.GCN 8311, 8312, 8318; Rea et al. GCN 8313; Esposito et al. Atel 1763) starting on October 8tHETE 2008 at 21:35 UT, until October 10th at 04:53 UT. Simultaneous observations at other wavelengths are encouraged. For last minute changes to the INTEGRAL schedule see http://integral.esac.esa.int/isocweb/schedule.html?action=intro...Full Text

A GRB lasting about 30 s has been detected by IBAS in IBIS/ISGRI data at 20:48:08 UT of October 3. The coordinates (J2000) are: RA = 285.0256 [degrees] DEC= +16.6914[degrees] with an uncertainty of 1.5 arcmin (90% c.l.). A preliminary analysis gives a peak flux in the 20-200 keV range of about 3 ph/cmq/s (1-s integration time) and a fluence over the same energy range of about 6x10e-6 erg/cmq...Full Text

A GRB lasting about 30 s has been detected by IBAS in IBIS/ISGRI data at 13:46:12 UT of October 3. The coordinates (J2000) are: RA = 262.3758 [degrees] DEC= 16.566 [degrees] with an uncertainty of 2 arcmin (90% c.l.). A preliminary analysis gives a peak flux in the 20-200 keV range of about 0.3 ph/cmq/s (1-s integration time) and a fluence over the same energy range of about 4x10e-7 erg/cmq...Full Text

A GRB lasting about 60 s has been detected by IBAS in IBIS/ISGRI data at 11:03:36 UT of September 22. The coordinates (J2000) are: RA: 270.838 [degrees] DEC: -22.509 [degrees] with an uncertainty of 2 arcmin (90% c.l.). A preliminary analysis gives a peak flux in the 20-200 keV range of about 1 ph/cmq/s (1-s integration time) and a fluence over the same energy range of about 1.5x10e-6 erg/cmq...Full Text

INTEGRAL carried out a ToO observation of SGR 0501+4516 from 2008-08-27T00:46 to 2008-08-29T13:36 (GCN 8131). A very preliminary analysis of the data indicates that IBIS/ISGRI detected the quiescent X-ray emission at the 2 mCrab level between 20 and 40 keV. At least four bursts were detected, at...Full Text

We have triggered a ToO monitoring observation of SGR 0501+4516 with XMM-Newton. The planned observing windows are: ...Full Text

We have triggered an approved INTEGRAL ToO observation of SGR0501+4516. The planned observing times during revolution 717 will be: ...Full Text

A bright GRB lasting about 105 s has been detected by IBAS in IBIS/ ISGRI data at 13:22:19 UT on July 23rd 2008. The refined position is ...Full Text

A GRB lasting about 30 s has been detected by IBAS in IBIS/ISGRI data at 09:35:21 UT of June 13 2008. The coordinates (J2000) are: ...Full Text

A GRB lasting about 180 s has been detected by IBAS in IBIS/ISGRI data at 11:18:11 UT of June 3. The coordinates (J2000) are: ...Full Text

A GRB lasting about 10 s has been detected by IBAS in IBIS/ISGRI data at 22:33:32 UT of April 14. The coordinates (J2000) are: ...Full Text