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19 papers · 2 filters
Suzaku captures a possible eclipse in IGR J16207-5129 and identifies a weak-flaring state in IGR J17391-3021
A. Bodaghee, J. A. Tomsick, J. Rodriguez +4
We present the results from analyses of Suzaku observations of the supergiant X-ray binaries IGR J16207-5129 and IGR J17391-3021. For IGR J16207-5129, we provide the first broadban…
Confirmation of IGR J01363+6610 as a Be X-ray binary with very low quiescent X-ray luminosity
John A. Tomsick, Craig Heinke, Jules Halpern +4
The field containing the candidate High Mass X-ray Binary IGR J01363+6610 was observed by XMM-Newton on 2009 July 31 for 28 ks. A Be star was previously suggested as the possible c…
The INTEGRAL legacy on High Mass X-ray Binaries
Sylvain Chaty, Juan Antonio Zurita Heras, Arash Bodaghee
Observations with the INTEGRAL satellite have quadrupled the population of supergiant High Mass X-ray Binaries (HMXBs), revealed a previously hidden population of obscured supergia…
Suzaku observes weak flares from IGR J17391-3021 representing a common low-activity state in this SFXT
A. Bodaghee, J. A. Tomsick, J. Rodriguez +4
We present an analysis of a 37-ks observation of the supergiant fast X-ray transient (SFXT) IGR J17391-3021 (=XTE J1739-302) gathered with Suzaku. The source evolved from quiescenc…
Unveiling the nature of IGR J16283-4838
L. J. Pellizza, S. Chaty, N. E. Chisari
Context. One of the most striking discoveries of the INTEGRAL observatory is the existence of a previously unknown population of X-ray sources in the inner arms of the Galaxy. The…
Search for gamma-ray emission from magnetars with the Fermi Large Area Telescope
LAT collaboration
We report on the search for 0.1-10 GeV emission from magnetars in 17 months of Fermi Large Area Telescope (LAT) observations. No significant evidence for gamma-ray emission from an…
Fermi Large Area Telescope Observation of a Gamma-ray Source at the Position of Eta Carinae
The Fermi LAT collaboration
The Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope detected a gamma-ray source that is spatially consistent with the location of Eta Carinae. This source ha…
Fermi-gst: A new view of the gamma-ray sky
Sylvain Chaty
The Large Area Telescope on the Fermi gamma-ray Space Telescope (FGST, ex-GLAST) provides unprecedented sensitivity for all-sky monitoring of gamma-ray activity. It is an adequate…
Multi-wavelength study of High Mass X-ray Binaries
Sylvain Chaty
The INTEGRAL satellite has revealed a major population of supergiant High Mass X-ray Binaries in our Galaxy, revolutionizing our understanding of binary systems and their evolution…
Broadband Suzaku observations of IGR J16207-5129
Arash Bodaghee, John A. Tomsick, Jerome Rodriguez +3
An analysis of IGR J16207-5129 is presented based on observations taken with Suzaku. The data set represents ~80 ks of effective exposure time in a broad energy range between 0.5 a…
Modeling the hard states of three black hole candidates
Hui Zhang, Feng Yuan, Sylvain Chaty
Simultaneous multiwavelength observations were recently performed for three black hole candidates --- SWIFT J1753.5-0127, GRO J1655-40 and XTE J1720-318. In this paper we test the…
High Energy Phenomena in Supergiant X-ray Binaries
Sylvain Chaty
The INTEGRAL satellite has revealed a major population of supergiant High Mass X-ray Binaries in our Galaxy, revolutionizing our understanding of binary systems and their evolution…
Long-term multi-wavelength studies of GRS 1915+105 I. A high-energy and mid-infrared focus with RXTE, INTEGRAL, and Spitzer
F. Rahoui, S. Chaty, J. Rodriguez +3
To date, mid-infrared properties of Galactic black hole binaries have barely been investigated in the framework of multi-wavelength campaigns. Yet, studies in this spectral domain…
Fermi-LAT results on Galactic Plane gamma-ray Transient Sources
Sylvain Chaty
The Large Area Telescope on the Fermi gamma-ray Space Telescope provides unprecedented sensitivity for all-sky monitoring of gamma-ray activity. It has detected a few Galactic sour…
Multi-wavelength observations revealing the most obscured high energy sources of our Galaxy
S. Chaty
A new type of high-energy binary system has been revealed by the INTEGRAL satellite. These sources are being unveiled by means of multi-wavelength optical, near- and mid-infrared o…
Suzaku Observation of GRS 1915+105: Evolution of Accretion Disc Structure during Limit-Cycle Oscillation
Y. Ueda, K. Honda, H. Takahashi +9
We present results from the Suzaku observation of the microquasar GRS 1915+105 performed during the 2005 October multiwavelength campaign. The data include both stable state (class…
Early X-ray and optical observations of the soft gamma-ray repeater SGR 0418+5729
P. Esposito, G. L. Israel, R. Turolla +13
Emission of two short hard X-ray bursts on 2009 June 5 disclosed the existence of a new soft gamma-ray repeater, now catalogued as SGR 0418+5729. After a few days, X-ray pulsations…
Fermi-LAT discovery of GeV gamma-ray emission from the young supernova remnant Cassiopeia A
A. Abdo
We report on the first detection of GeV high-energy gamma-ray emission from a young supernova remnant with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. Thes…
Detection of High-Energy Gamma-Ray Emission from the Globular Cluster 47 Tucanae with Fermi
N. A. Webb, J. Knödlseder
Globular clusters are known to harbour a significant population of neutron star X-ray binaries that could be responsible for delaying the inevitable core collapse of these dense cl…