Results 11 to 20 of about 5,433 (258)
Diffractive X-Ray Telescopes [PDF]
X-Ray Optics and Instrumentation, 2010 Diffractive X-ray telescopes using zone plates, phase Fresnel lenses, or related optical elements have the potential to provide astronomers with true imaging capability with resolution several orders of magnitude better than available in any other waveband.
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A Focusing X-Ray Telescope Monochromator [PDF]
International Astronomical Union Colloquium, 1972 In order to resolve clusters of X-ray lines emitted by flares (Fritz et al, 1967; Neupert and Swartz, 1970) and to determine line shapes, a considerable resolving power is needed. The angular size of flares, typically about 2’ will not allow the necessary resolution to be obtained without a very fine slit system combined with the flat crystal X-ray ...
Aaron S. Filler, Benjamin S. Fraenkel
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Galaxies, 2020 Since the launch of Chandra twenty years ago, one of the greatest mysteries surrounding Quasar Jets is the production mechanism for their extremely high X-ray luminosity. Two mechanisms have been proposed. In the first view, the X-ray emission is inverse-
Eric S. Perlman +6 more
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Геодинамика и тектонофизика, 2019 Seven gamma-ray bursts – GRB 130907A, GRB 140311B, GRB 140129B, GRB 160227A, GRB 120404A, GRB 110801A, and GRB 120811C were observed by the MSU MASTER (Mobile Astronomical System of TElescope Robots) Global Network.
V. M. Lipunov +31 more
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The VLBA-BU-BLAZAR Multi-Wavelength Monitoring Program
Galaxies, 2016 We describe a multiwavelength program of monitoring of a sample of bright γ-ray blazars, which the Boston University (BU) group has being carrying out since June 2007.
Svetlana Jorstad, Alan Marscher
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PROPOSAL OF NEW OPTICAL ELEMENTS
Acta Polytechnica, 2013 A overview of our patented proposals of new optical elements is presented. The elements are suitable for laser pulse analysis, telescopy, X-ray microscopy and X-ray telescopy.
Goce Chadzitaskos, Jiří Tolar
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New Journal of Physics, 2007 19 pages, 25 figures and images, replaced by the revised version accepted for publication in New Journal of ...
Kuster, M. +25 more
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The High-energy Spectrum of the Young Planet Host V1298 Tau
The Astronomical Journal, 2023 V1298 Tau is a young pre-main-sequence star hosting four known exoplanets that are prime targets for transmission spectroscopy with current-generation instruments. This work pieces together observations from the NICER X-ray telescope, the Space Telescope
Girish M. Duvvuri +6 more
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Halo Emission of the Cat's Eye Nebula, NGC 6543 Shock Excitation by Fast Stellar Winds [PDF]
Journal of Astronomy and Space Sciences, 2002 Images taken with the Chandra X-ray telescope have for the the first time revealed the central, wind-driven, hot bubble (Chu et al. 2001), while Hubble Space Telescope (HST) WFPC2 images of the Cat's Eye nebula, NGC 6543, show that the temperature of the
Siek Hyung, Seong-Jae Lee
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Innovative space x-ray telescopes [PDF]
International Conference on Space Optics — ICSO 2004, 2017 We report on the progress in innovative X-ray mirror development with focus on requirements of future X-ray astronomy space projects. Various future projects in X-ray astronomy and astrophysics will require large lightweight but highly accurate segments with multiple thin shells or foils. The large Wolter 1 grazing incidence multiple mirror arrays, the
A. Inneman +5 more
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