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The Burst Spectra of EXO 0748-676 during a Long 2003 XMM-Newton Observation
J. Cottam, F. Paerels, M. Méndez +4
Gravitationally redshifted absorption lines from highly ionized iron have been previously identified in the burst spectra of the neutron star in EXO 0748-676. To repeat this detect…
Discovery of X-ray burst triplets in EXO 0748-676
L. Boirin, L. Keek, M. Mendez +5
[Abridged] Type-I X-ray bursts are thermonuclear flashes that take place on the surface of accreting neutron stars. The wait time between consecutive bursts is set by the time requ…
High-resolution X-ray spectroscopy of the ultracompact LMXB pulsar 4U 1626-67
Miriam I. Krauss, Norbert S. Schulz, Deepto Chakrabarty +2
[abridged] We report results from four recent observations of the ultracompact LMXB pulsar 4U 1626-67. All the observations obtained high-resolution X-ray spectra of the system, tw…
Suzaku discovery of iron absorption lines in outburst spectra of the X-ray transient 4U 1630-472
Aya Kubota, Tadayasu Dotani, Jean Cottam +12
We present the results of six Suzaku observations of the recurrent black hole transient 4U1630-472 during its decline from outburst from February 8 to March 23 in 2006. All observa…
Cyclotron resonance energies at a low X-ray luminosity: A0535+262 observed with Suzaku
Y. Terada, T. Mihara, M. Nakajima +28
The binary X-ray pulsar A0535+262 was observed with the Suzaku X-ray observatory, on 2005 September 14 for a net exposure of 22 ksec. The source was in a declining phase of a minor…
Gravitationally redshifted absorption lines in the X-ray burst spectra of a neutron star
J. Cottam, F. Paerels, M. Mendez
The fundamental properties of neutron stars provide a direct test of the equation of state of cold nuclear matter, a relationship between pressure and density that is determined by…
Chandra and XMM Observations of the ADC Source 0921-630
T. R. Kallman, L. Angelini, B. Boroson +1
We analyze observations of the low mass X-ray binary 2S0921-63 obtained with the gratings and CCDs on Chandra and XMM. This object is a high inclination system showing evidence for…
High-Resolution X-Ray Spectroscopy of the Accretion Disk Corona Source 4U 1822-37
Jean Cottam, Masao Sako, Steven M. Kahn +2
We present a preliminary analysis of the X-ray spectrum of the accretion disk corona source, 4U 1822-37, obtained with the High Energy Transmission Grating Spectrometer onboard the…
Confronting atomic data with Fe L-shell spectra of stellar coronae
E. Behar, J. Cottam, J. R. Peterson +5
It is common to suggest the uncertainties in the atomic data for explaining difficulties that arise in interpreting astrophysical x-ray spectra. The atomic data for the Fe L-shell…
Stellar Coronae with \textit{XMM-Newton} RGS. II. X-ray Variability
M. Audard, M. Guedel, A. J. den Boggende +16
First results from high-resolution coronal spectroscopy of flares with the Reflection Grating Spectrometers on board the \textit{XMM-Newton} satellite are reviewed. Rotational modu…
Detection of X-ray line emission from the shell of SNR B0540-69.3 with XMM-Newton RGS
K. J. van der Heyden, F. Paerels, J. Cottam +2
We present X-ray observations of PSR 0540-69.3 with the XMM-Newton observatory. The spectra obtained with the Reflection Grating Spectrometer reveal, for the first time, emission f…
High resolution X-Ray spectroscopy of Zeta Puppis with the XMM-Newton Reflection Grating Spectrometer
S. M. Kahn, M. A. Leutenegger, J. Cottam +5
We present the first high resolution X-ray spectrum of the bright O4Ief supergiant star Zeta Puppis, obtained with the Reflection Grating Spectrometer on-board XMM-Newton. The spec…
First Light Measurements with the XMM-Newton Reflection Grating Spectrometers: Evidence for an Inverse First Ionisation Potential Effect and Anomalous Ne A bundance in the Coronae of HR 1099
A. C. Brinkman, E. Behar, M. Guedel +15
The RS CVn binary system HR 1099 was extensively observed by the XMM-Newton observatory in February 2000 as its first-light target. A total of 570 ks of exposure time was accumulat…
High-Resolution spectroscopy of the low-mass X-ray binary EXO 0748-67
J. Cottam, S. M. Kahn, A. C. Brinkman +2
We present initial results from observations of the low-mass X-ray binary EXO 0748-67 with the Reflection Grating Spectrometer on board the XMM-Newton Observatory. The spectra exhi…
First XMM-Newton observations of a cataclysmic variable II: the X-ray spectrum of OY Car
Gavin Ramsay, France Cordova, Jean Cottam +6
We present XMM-Newton X-ray spectra of the disc accreting cataclysmic variable OY Car, which were obtained during the performance verification phase of the mission. These data were…
The Chandra Iron-L X-Ray Line Spectrum of Capella
Ehud Behar, Jean Cottam, Steven M. Kahn
An analysis of the iron L-shell emission in the publicly available spectrum of the Capella binary system, as obtained by the High Energy Transmission Grating Spectrometer on board…
High Resolution Spectroscopy of the X-ray Photoionized Wind in Cygnus X-3 with the Chandra High Energy Transmission Grating Spectrometer
Frits Paerels, Jean Cottam, Masao Sako +5
We present a preliminary analysis of the 1--10 keV spectrum of the massive X-ray binary Cyg X-3, obtained with the High Energy Transmission Grating Spectrometer on the Chandra X-ra…