Results 51 to 60 of about 2,330,942 (208)

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

Europe's X-ray observatory defies the jinx… [PDF]

open access: yesNature, 2000
MUNICH The jinx that has destroyed or limited a string of X-ray astronomy missions launched in the last nine months appears not to have affected the European Space Agency's new X-ray observatory.
openaire   +2 more sources

X-ray emission lines from inhomogeneous stellar winds [PDF]

open access: yes, 2004
It is commonly adopted that X-rays from O stars are produced deep inside the stellar wind, and transported outwards through the bulk of the expanding matter which attenuates the radiation and affects the shape of emission line profiles.
L. Oskinova, A. Feldmeier, W. Hamann
semanticscholar   +1 more source

The X-ray observatory Suzaku

open access: yesThe X-ray observatory Suzaku
High-sensitivity wide-band X-ray spectroscopy is the key feature of the Suzaku X-ray observatory, launched on 2005 July 10. This paper summarizes the spacecraft, in-orbit performance, operations, and data processing that are related to observations. The scientific instruments, the high-throughput X-ray telescopes, X-ray CCD cameras, non-imaging hard X ...
  +5 more sources

AGILE observations of the ultra-luminous GRB 221009A [PDF]

open access: yesEPJ Web of Conferences
The ultra-luminous, long-duration transient event GRB 221009A was detected by several observatories - as the most luminous gamma-ray burst ever observed - from radio to VHE gamma rays, up to tens of TeV.
Piano Giovanni   +2 more
doaj   +1 more source

Concept of a Double Tilted Rowland Spectrograph for X-Rays

open access: yesThe Astrophysical Journal
High-resolution spectroscopy in soft X-rays (
Hans Moritz Günther   +3 more
doaj   +1 more source

X-Ray Pore Optics Technologies and Their Application in Space Telescopes

open access: yes, 2010
Silicon Pore Optics (SPO) is a new X-ray optics technology under development in Europe, forming the ESA baseline technology for the International X-ray Observatory candidate mission studied jointly by ESA, NASA, and JAXA.
M. Bavdaz   +4 more
semanticscholar   +1 more source

X-ray observations of RX J0822-4300 and Puppis-A [PDF]

open access: yes, 2005
Based on observations with the X-ray observatories Chandra and XMM-Newton we present results from a detailed spectro-imaging and timing analysis of the central compact X-ray source RX J0822-4300 in the supernova remnant Puppis−A.
C. Hui, W. Becker
semanticscholar   +1 more source

Detecting Exoplanet Transits with the Next Generation of X-Ray Telescopes

open access: yesThe Astronomical Journal
Detecting exoplanet transits at X-ray wavelengths would provide a window into the effects of high-energy irradiation on the upper atmospheres of planets.
Raven Cilley   +2 more
doaj   +1 more source

The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys

open access: yesAdvances in Astronomy, 2012
Significant progress has been made in the last few years on understanding how supermassive black holes form and grow. In this paper, we begin by reviewing the spectral signatures of active galactic nuclei (AGN) ranging from radio to hard X-ray ...
Ezequiel Treister, C. Megan Urry
doaj   +1 more source

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