Results 21 to 30 of about 2,330,942 (208)

CALIBRATION OF THE NuSTAR HIGH-ENERGY FOCUSING X-RAY TELESCOPE [PDF]

open access: yes, 2015
We present the calibration of the Nuclear Spectroscopic Telescope Array (NuSTAR) X-ray satellite. We used the Crab as the primary effective area calibrator and constructed a piece-wise linear spline function to modify the vignetting response.
K. Madsen   +21 more
semanticscholar   +1 more source

LOFT: a large observatory for x-ray timing [PDF]

open access: yesSPIE Proceedings, 2010
The high time resolution observations of the X-ray sky hold the key to a number of diagnostics of fundamental physics, some of which are unaccessible to other types of investigations, such as those based on imaging and spectroscopy. Revealing strong gravitational field effects, measuring the mass and spin of black holes and the equation of state of ...
M. Feroci   +48 more
openaire   +7 more sources

High Energy Observational Investigations of Supernova Remnants and their Interactions with Surroundings [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2013
Here we review the effort of Fermi Asian Network (FAN) in exploring the supernova remnants (SNRs) with state-of-art high energy observatories, including Fermi Gamma-ray Space Telescope and Chandra X-ray Observatory, in the period of 2011- 2012 ...
Chung-Yue Hui
doaj   +1 more source

X-ray emission from interacting wind massive binaries: A review of 15 years of progress [PDF]

open access: yes, 2015
Previous generations of X-ray observatories revealed a group of massive binaries that were relatively bright X-ray emitters. This was attributed to emission of shock-heated plasma in the wind–wind interaction zone located between the stars.
G. Rauw, Y. Nazé
semanticscholar   +1 more source

Development and manufacturing of SPO X-ray mirrors

open access: yesOptics for EUV, X-Ray, and Gamma-Ray Astronomy IX, 2019
The Silicon Pore Optics (SPO) technology has been established as a new type of X-ray optics enabling future X-ray observatories such as ATHENA. SPO is being developed at cosine together with the European Space Agency (ESA) and academic as well as ...
B. Landgraf   +34 more
semanticscholar   +1 more source

The Lynx X-ray Observatory: concept study overview and status

open access: yesAstronomical Telescopes + Instrumentation, 2018
Lynx, one of four strategic mission concepts under study for the 2020 Astrophysics Decadal Survey, will provide leaps in capability over previous and planned X-ray missions, and will provide synergistic observations in the 2030s to a multitude of space ...
J. Gaskin   +13 more
semanticscholar   +1 more source

AGN STORM 2. III. A NICER View of the Variable X-Ray Obscurer in Mrk 817

open access: yesThe Astrophysical Journal, 2023
The AGN STORM 2 Collaboration targeted the Seyfert 1 galaxy Mrk 817 for a year-long multiwavelength, coordinated reverberation mapping campaign including Hubble Space Telescope, Swift, XMM-Newton, NICER, and ground-based observatories. Early observations
Ethan R. Partington   +48 more
doaj   +1 more source

LONG-TERM TeV AND X-RAY OBSERVATIONS OF THE GAMMA-RAY BINARY HESS J0632+057 [PDF]

open access: yes, 2013
HESS J0632+057 is the only gamma-ray binary known so far whose position in the sky allows observations with ground-based observatories in both the northern and southern hemispheres.
E. Aliu   +298 more
semanticscholar   +1 more source

The Great Observatories Origins Deep Survey: Initial Results from Optical and Near-Infrared Imaging [PDF]

open access: yes, 2003
This special issue of the Astrophysical Journal Letters is dedicated to presenting initial results from the Great Observatories Origins Deep Survey (GOODS) that are primarily, but not exclusively, based on multiband imaging data obtained with the Hubble ...
M. Giavalisco   +62 more
semanticscholar   +1 more source

Chandra X-ray Observatory (CXO): overview [PDF]

open access: yesAstronomical Telescopes and Instrumentation, 1999
The Chandra X-Ray Observatory, the x-ray component of NASA's Great Observatories, was launched early in the morning of 1999, July 23 by the Space Shuttle Columbia. The Shuttle launch was only the first step in placing the observatory in orbit.
M. Weisskopf   +3 more
semanticscholar   +1 more source

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