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Preliminary Feasibility Study of the Solar Observation Payloads for STSAT-CLASS Satellites [PDF]
Journal of Astronomy and Space Sciences, 2004 In this paper, we present preliminary feasibility studies on three types of solar observation payloads for future Korean Science and Technology Satellite (STSAT) programs. The three candidates are (1) an UV imaging telescope, (2) an UV spectrograph, and (
Yong-Jae Moon +7 more
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Multilayer Mirror Based High-Resolution Solar Soft X-Ray Spectrometer
Frontiers in Astronomy and Space Sciences, 2021 Soft X-ray spectroscopy of the Sun is an important tool to understand the coronal dynamics and composition. The solar coronal X-ray spectrum below 1 keV is the least explored with high-resolution spectroscopy.
S. S. Panini +3 more
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First Detection of X-Ray Polarization from the Accreting Neutron Star 4U 1820−303
The Astrophysical Journal Letters, 2023 This paper reports the first detection of polarization in the X-rays for atoll-source 4U 1820−303, obtained with the Imaging X-ray Polarimetry Explorer (IXPE) at 99.999% confidence level (CL). Simultaneous polarimetric measurements were also performed in
Alessandro Di Marco +119 more
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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.
openaire +2 more sources
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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Classification of New X-Ray Counterparts for Fermi Unassociated Gamma-Ray Sources Using the Swift X-Ray Telescope [PDF]
Astrophysical Journal, 2019 Approximately one-third of the gamma-ray sources in the third Fermi-LAT catalog are unidentified or unassociated with objects at other wavelengths. Observations with the X-Ray Telescope on the Neil Gehrels Swift Observatory (Swift-XRT) have yielded ...
A. Kaur +4 more
semanticscholar +1 more source
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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CALIBRATION OF THE NuSTAR HIGH-ENERGY FOCUSING X-RAY TELESCOPE [PDF]
, 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
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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