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Registration of the First Thermonuclear X-ray Burst from AX J1754.2-2754
I. V. Chelovekov, S. A. Grebenev
During the analysis of the INTEGRAL observatory archival data we found a powerful X-ray burst, registered by JEM-X and IBIS/ISGRI telescopes on April 16, 2005 from a weak and poorl…
Cosmic gamma-ray burst 060428C detected in the fields of view of the IBIS and SPI telescopes of the INTEGRAL observatory and its early afterglow
S. A. Grebenev, I. V. Chelovekov
Analyzing archival data of the INTEGRAL observatory we discovered and localized a cosmic gamma-ray burst detected within fields of view of the IBIS/ISGRI and SPI telescopes on Apri…
Search for X-ray bursts in the INTEGRAL/IBIS data of 2003-2005 and discovery of the new X-ray burster IGR J17364-2711/17380-3749
I. V. Chelovekov, S. A. Grebenev, R. A. Sunyaev
All the observations performed with the IBIS telescope aboard the INTEGRAL observatory during the first 2.5 years of its in-orbit operation have been analyzed to find X-ray bursts.…
IGR J17098-3628: an X-ray Nova discovered by INTEGRAL
S. A. Grebenev, S. V. Molkov, M. G. Revnivtsev +1
We report the discovery with INTEGRAL on March 24, 2005, and follow-up observations of the distant Galactic X-ray nova IGR J17098-3628.
GRB070610 : A Curious Galactic Transient
M. M. Kasliwal, S. B. Cenko, S. R. Kulkarni +23
GRB 070610 is a typical high-energy event with a duration of 5s.Yet within the burst localization we detect a highly unusual X-ray and optical transient, SwiftJ195509.6+261406. We…
INTEGRAL observations of the cosmic X-ray background in the 5-100 keV range via occultation by the Earth
E. Churazov, R. Sunyaev, M. Revnivtsev +32
We study the spectrum of the cosmic X-ray background (CXB) in energy range 5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations wi…
Hard X-ray Bursts Detected by the IBIS Telescope Onboard the INTEGRAL Observatory in 2003-2004
I. V. Chelovekov, S. A. Grebenev, R. A. Sunyaev
All of the observations performed with the IBIS telescope onboard the INTEGRAL observatory during the first one and a half years of its in-orbit operation (from February 10, 2003,…
Observations of the X-ray Burster MX 0836-42 by the INTEGRAL and RXTE Orbiting Observatories
I. V. Chelovekov, A. A. Lutovinov, S. A. Grebenev +1
We present the results of our study of the emission from the transient burster MX 0836-42 using its observations by the INTEGRAL and RXTE X-ray and gamma-ray observatories in the p…
Outburst of the X-ray transient SAX J1818.6-1703 detected by INTEGRAL in September 2003
S. A. Grebenev, R. A. Sunyaev
During the observation of the Galactic-center field by the INTEGRAL observatory on September 9, 2003, the IBIS/ISGRI gamma-ray telescope detected a short (several-hours-long) inten…
First results from TOO observations of the Aql X-1 field with INTEGRAL
S. Molkov, A. Lutovinov, S. Grebenev
We present results of observations of the Aql X-1 field performed in March-April 2003 with the INTEGRAL observatory. This TOO (Target Of Opportunity) INTEGRAL observations was init…
Review of low-mass X-ray binaries near the Galactic center
A. Lutovinov, S. Grebenev, S. Molkov +1
Results of observations of several LMXBs in the Galactic center region carried out with the ART-P telescope on board \Granat observatory are briefly reviewed. More than dozen sourc…
Review of X-Ray Bursters in the Galactic Center Region
A. A. Lutovinov, S. V. Molkov, S. A. Grebenev +1
Results of observations of X-ray bursters in the Galactic Center region carried out with the RXTE observatory and the ART-P telescope on board GRANAT are presented. Eight X-ray bur…
X-ray Bursts from the Source A1742-294 in the Galactic-Center Region
A. A. Lutovinov, S. A. Grebenev, M. N. Pavlinsky +1
We present results of observations of the X-ray burster A1742-294 near the Galactic center with the ART-P telescope onboard the Granat observatory. The shape of its persistent spec…
Observation of solar flares through the ART-P telescope side shield
A. Lutovinov, M. Pavlinsky, S. Grebenev
Some preliminary results of observations of six solar flares though the ART-P telescop side shield in 1990-1992 are presented.
Non-pulsing emission from X-ray pulsars
A. Lutovinov, S. Grebenev, R. Sunyaev
Results of GRANAT/ART-P observations of three X-ray pulsars in non-pulsing states are presented: 1) a statistically significant non-pulsing flux with a simple power-law spectrum wa…
An X-ray burst with strong photospheric radius expansion observed from the source 4U1724-307 in Terzan 2
S. V. Molkov, S. A. Grebenev, A. A. Lutovinov
We present results of the RXTE observations of an extremely intense X-ray burst detected from the source 4U1724-307 in the globular cluster Terzan 2. The burst profile was complex…
GRANAT/ART-P observations of GX3+1: type I X-ray burst and persistent emission
S. V. Molkov, S. A. Grebenev, M. N. Pavlinsky +1
We present results of observations of the known LMXB source GX3+1 with the telescope ART-P on board GRANAT in the fall of 1990. A strong X-ray burst was detected from the source on…