Results 1 to 10 of about 111,221 (213)

<title>Imaging performance of the XMM-Newton x-ray telescopes</title> [PDF]

, 2000
The in-orbit imaging performance of the three X-ray telescopes on board of the X-ray astronomy observatory XMM-Newton is presented and compared with the performance measured on ground at the MPE PANTER test facility. The comparison shows an excellent agreement between the on ground and in-orbit performance.
B. Aschenbach, U. G. Briel, F. Haberl, Heinrich W. Braeuninger, Wolfgang Burkert, Andreas Oppitz, P. Gondoin, David H. Lumb   +7 more
openalex   +2 more sources

Improving the Resolution of X-Ray Telescopes with Occulting Satellites [PDF]

arXiv, 2000
One of the challenges of X-ray astronomy is how to both collect large numbers of photons yet attain high angular resolution. Because X-ray telescopes utilize grazing optics, to collect more photons requires a larger acceptance angle which in turn compromises the angular resolution. All X-ray telescopes thus have angular resolution far poorer than their
Craig J. Copi, Glenn D. Starkman
openalex   +3 more sources

The challenge to large optical telescopes from x-ray astronomy [PDF]

, 2003
In the ROSAT era of the mid-1990's, the problems facing deep X-ray surveys could be largely solved with 10 m class telescopes. In the first decade of this new millennium, with X-ray telescopes such as the Chandra X-ray Observatory and XMM-Newton in operation, deep X-ray surveys are challenging 10 m telescopes.
A. E. Hornschemeier
openalex   +2 more sources

The X-Ray Telescope of the CAST Experiment [PDF]

IEEE Nuclear Science Symposium Conference Record, 2005, 2006
5 pages, 9 ...
R. Kotthaus, H. Bräuninger, P. Friedrich, R. Hartmann, D. Kang, M. Kuster, G. Lutz, Lothar Strueder   +7 more
openalex   +5 more sources

The swift x-ray telescope: status and performance [PDF]

SPIE Proceedings, 2007
9 pages, 14 ...
D. N. Burrows, J. A. Kennea, A. F. Abbey, A. P. Beardmore, S. Campana, M. Capalbi, G. Chincarini, G. Cusumano, P. A. Evans, J. E. Hill, P. Giommi, M. R. Goad, O. Godet, A. Moretti, D. Morris, J. P. Osborne, C. Pagani, K. L. Page, M. Perri, J. L. Racusin, P. Romano, R. L. C. Starling, G. Tagliaferri, F. Tamburelli, L. G. Tyler, R. Willingale   +25 more
openalex   +6 more sources

The eROSITA X-ray telescope on SRG [PDF]

Astronomy & Astrophysics, 2021
eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary instrument on the Spectrum-Roentgen-Gamma (SRG) mission, which was successfully launched on July 13, 2019, from the Baikonour cosmodrome. After the commissioning of the instrument and a subsequent calibration and performance verification phase, eROSITA started a survey of
Predehl P., Andritschke R., Arefiev V., Babyshkin V., Batanov O., Becker W., Boehringer H., Bogomolov A., Boller T., Borm K., Bornemann W., Br, Br, Brunner H., Brusa M., Bulbul E., Buntov M., Burwitz V., Burkert W., Clerc N., Churazov E., Coutinho D., Dauser T., Dennerl K., Doroshenko V., Eder J., Emberger V., Eraerds T., Finoguenov A., Freyberg M., Friedrich P., Friedrich S., Fuermetz M., Georgakakis A., Gilfanov M., Granato S., Grossberger C., Gueguen A., Gureev P., Haberl F., Haelker O., Hartner G., Hasinger G., Huber H., Ji L., Kienlin A., Kink W., Korotkov F., Kreykenbohm I., Lamer G., Lomakin I., Lapshov I., Liu T., Maitra C., Meidinger N., Menz B., Merloni A., Mernik T., Mican B., Mohr J., M, Nandra K., Nazarov V., Pacaud F., Pavlinsky M., Perinati E., Pfeffermann E., Pietschner D., Ramos-Ceja M., ~E., Rau A., Reiffers J., Reiprich T., ~H., Robrade J., Salvato M., Sanders J., Santangelo A., Sasaki M., Scheuerle H., Schmid C., Schmitt J., Schwope A., Shirshakov A., Steinmetz M., Stewart I., Strueder L., Sunyaev R., Tenzer C., Tiedemann L., Truemper J., Voron V., Weber P., Wilms J., Yaroshenko V.   +94 more
openaire   +9 more sources

Characterization of a lobster-eye type X-ray telescope [PDF]

EPJ Web of Conferences, 2022
Lobster-eye type X-ray telescopes use reflecting plano mirrors under grazing incidence and can observe a large field of view. As part of a Bavarian-Czech cooperation, two telescopes were build, equipped with mirrors coated with gold and iridium.
Döhring Thorsten, Stieglitz Veronika, Hudec Rene, Sapsai Iryna, Friedrich Peter, Burwitz Vadim   +5 more
doaj   +1 more source

Simulation of a Simple Wolter Telescope of Type I by Geant4 for Some Widely Used Materials [PDF]

Iranian Journal of Astronomy and Astrophysics, 2020
At the present work, the reflection of X-rays from surfaces composed of silicon, gold, iridium, and nickel is simulated in the range of E ≤ 5 keV energy for the two cases, which includes raw mirror surfaces and a typical Wolter-I optics-based X-ray ...
Mehdi Abbasian Motlagh, Gohar Rastegarzadeh   +1 more
doaj   +1 more source

Small Spacecraft Payload Study for X-ray Astrophysics including GRB Science

Universe, 2022
This paper presents microsatellite spacecraft payload study for prompt observation of transient astrophysical objects in X-ray energy range. By combining telescope concepts and miniaturized detectors, the small spacecraft will be able to probe the X-ray ...
Vladimír Dániel, Veronika Maršíková, Rene Hudec, Ladislav Pína, Adolf Inneman, Karel Pelc   +5 more
doaj   +1 more source

Timing Calibration of the NuSTAR X-Ray Telescope [PDF]

The Astrophysical Journal, 2021
Abstract The Nuclear Spectroscopic Telescope Array (NuSTAR) mission is the first focusing X-ray telescope in the hard X-ray (3–79 keV) band. Among the phenomena that can be studied in this energy band, some require high time resolution and stability: rotation-powered and accreting millisecond pulsars, fast variability from black holes ...
Matteo Bachetti, Craig B. Markwardt, Brian W. Grefenstette, Eric V. Gotthelf, Lucien Kuiper, Didier Barret, W. Rick Cook, Andrew Davis, Felix Fürst, Karl Forster, Fiona A. Harrison, Kristin K. Madsen, Hiromasa Miyasaka, Bryce Roberts, John A. Tomsick, Dominic J. Walton   +15 more
openaire   +7 more sources