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XMM–Newton observations of 3C 273
ABSTRACT A series of nine XMM-Newton observations of the radio-loud quasar 3C 273 arepresented, concentrating mainly on the soft excess. Although most of the individ-ual observations do not show
The 2-79 keV X-ray spectrum of the circinus galaxy with NuSTAR, XMM-Newton, and Chandra: a fully Compton-thick active galactic nucleus
The Circinus galaxy is one of the closest obscured active galactic nuclei (AGNs), making it an ideal target for detailed study. Combining archival Chandra and XMM-Newton data with new NuSTAR
2003–2005 INTEGRAL and XMM-Newton observations of 3C 273
Aims. The aim of this paper is to study the evolution of the broadband spectrum of one of the brightest and nearest quasars 3C 273. Methods. We analyze the data obtained during quasi-simultaneous
The relative and absolute timing accuracy of the EPIC-pn camera on XMM-Newton, from X-ray pulsations of the Crab and other pulsars
Aims. Reliable timing calibration is essential for the accurate comparison of XMM-Newton light curves with those from other observatories, to ultimately use them to derive precise physical
Cross Spectral Calibration of Suzaku, XMM-Newton, and Chandra with PKS 2155-304 as an Activity of IACHEC
We report on comparisons of the energy responses of the Suzaku XIS, the Chandra HRC and ACIS with the LETG, and the XMM-Newton MOS and pn using simultaneous data of the BL Lac object PKS 2155 304
The JWST/NIRSpec instrument: update on status and performances
The Near-Infrared Spectrograph (NIRSpec) is one of the four instruments on the James Webb Space Telescope (JWST) which is scheduled for launch in 2018. NIRSpec is developed by the European Space
We present a detailed spectral analysis of XMM-Newton and NuSTAR observations of the accreting transient black hole GRS 1739-278 during a very faint low hard state at ~0.02% of the Eddington
When is pile-up important in the XMM-Newton EPIC cameras?
Context. Pile-up in X-ray charged couple device (CCD) detectors is defined as the reconstruction of independent events in the same detection cell as a single event during a read-out cycle. Pile-up
Eta Carinae's Thermal X-ray Tail Measured with XMM-Newton and NuSTAR.
The column density to the hardest emission component, N H ~1024 H cm-2, marked one of the highest values ever observed for η Car, strongly suggesting the increased obscuration of the wind-wind colliding X-ray emission by the thick primary stellar wind prior to superior conjunction.
Status of the JWST/NIRSpec instrument
The Near-Infrared Spectrograph (NIRSpec) is one of the four instruments on the James Webb Space Telescope (JWST), scheduled for launch in 2018. NIRSpec has been designed and built by the European