Results 21 to 30 of about 7,225,990 (222)

LOFT — Large Observatory for X-ray Timing [PDF]

open access: yesJournal of Instrumentation, 2014
Accepted for publication on JINST (in press)
S. Zane   +30 more
openaire   +3 more sources

The International X-ray Observatory [PDF]

open access: yesAIP Conference Proceedings, 2010
The International X-ray Observatory (IXO) is a joint ESA-JAXA-NASA effort to address fundamental and timely questions in astrophysics: What happens close to a black hole? How did supermassive black holes grow? How does large scale structure form? What is the connection between these processes? To address these questions IXO will employ optics with 3 sq
Nicholas E. White   +8 more
openaire   +2 more sources

The effect of proton damage on the X-ray spectral response of MOS CCDs for the swift X-ray telescope [PDF]

open access: yes, 2002
The effect of non-ionising energy loss(NIEL) of protons in charge-coupled devices is to displace silicon atoms and any dopant materials present from their lattice positions to form lattice defects which in turn can trap electrons [1].
Abbey, AF   +9 more
core   +1 more source

LOFT: THE LARGE OBSERVATORY FOR X-RAY TIMING [PDF]

open access: yesThe Thirteenth Marcel Grossmann Meeting, 2015
LOFT, the large observatory for X-ray timing, was selected by the European Space Agency (ESA) in February 2011 as one of four medium size mission concepts for the Cosmic Vision program that will compete for a launch opportunity in the early 2020s. LOFT will carry out high-time resolution (10 μs) and spectroscopic observations (<260 eV) of compact ...
BOZZO, ENRICO   +2 more
openaire   +3 more sources

LOFT: Large Observatory For X-Ray Timing [PDF]

open access: yesProceedings of the International Astronomical Union, 2011
AbstractHigh-time-resolution X-ray observations of compact objects provide direct access to strong-field gravity, black-hole masses and spins, and the equation of state of ultra-dense matter. LOFT, the Large Observatory for Xray Timing, is specifically designed to study the very rapid X-ray flux and spectral variability that directly probe the motion ...
Mignani, R. P.   +8 more
openaire   +2 more sources

Optically and x-ray selected galaxy groups at intermediate redshift [PDF]

open access: yes, 2012
In this thesis I present the properties of two samples of galaxy groups containing 39 high quality X-ray selected systems and 38 optically (spectroscopically) selected systems in coincident spatial regions at 0 ...
Connelly, Jennifer L.
core   +1 more source

Revisiting the Galactic X-Ray Binary MAXI J1631–479: Implications for High Inclination and a Massive Black Hole

open access: yesThe Astrophysical Journal, 2023
X-ray spectroscopy of Galactic black hole binaries serves as a powerful tool to gain an overall understanding of the system. Not only can the properties of the accretion disk be studied in detail, the fundamental properties of the black hole such as spin
Sandeep K. Rout   +3 more
doaj   +1 more source

The Chandra X-Ray Observatory [PDF]

open access: yes, 2006
We present here an overview of the status of the Chandra X-ray Observatory which has nowbeen operating forfive years.The Observatory is running smoothly, and the scientific return continues to be outstanding. We provide some details on the molecular contamination of the ACIS fillters and its impact on observations.
openaire   +1 more source

Quantitative chemical analysis of pickling solutions by x-ray fluorescence spectrometry

open access: yes, 2007
A quantitative analytical method of chlorine and iron in hydrochloric pickling solutions by x-ray spectrometry in atmospheric He mode is proposed. This work is concerned with the replacement of the wet chemical analyses of pickling solutions with rapid ...
Na, HG   +7 more
core   +1 more source

Physics Beyond the Standard Model with Future X-Ray Observatories: Projected Constraints on Very-light Axion-like Particles with Athena and AXIS

open access: yesThe Astrophysical Journal, 2023
Axion-like particles (ALPs) are well-motivated extensions of the Standard Model of Particle Physics and a generic prediction of some string theories.
Júlia Sisk-Reynés   +4 more
doaj   +1 more source

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