Results 21 to 30 of about 77,058 (202)
Fermi-LAT and NuSTAR as Stellar Axionscopes [PDF]
, 2017 We overview the potential of airborne X-ray and gamma-ray telescopes to probe the axion-like particles parameter space.Comment: Contributed to the 13th Patras Workshop on Axions, WIMPs and WISPs, Thessaloniki, May 15 to 19 ...
Giannotti, Maurizio
core +1 more source
Handling the Background in IXPE Polarimetric Data
The Astronomical Journal, 2023 Imaging X-ray Polarimetry Explorer (IXPE) is a Small Explorer mission by NASA and Agenzia Spaziale Italiana, launched on 2021 December 9, dedicated to investigating X-ray polarimetry allowing angular-, time-, and energy-resolved observations in the 2–8 ...
Alessandro Di Marco +20 more
doaj +1 more source
Geant4 simulations of soft proton scattering in X-ray optics. A tentative validation using laboratory measurements [PDF]
, 2017 Low energy protons (< 300 keV) can enter the field of view of X-ray space telescopes, scatter at small incident angles, and deposit energy on the detector, causing intense background flares at the focal plane or in the most extreme cases, damaging the X ...
Alfonso Mantero +9 more
core +2 more sources
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
openaire +1 more source
Unbiased CLEAN for STIX in Solar Orbiter
The Astrophysical Journal Supplement Series, 2023 CLEAN is an iterative deconvolution method for radio and hard-X-ray solar imaging. In a specific step of its pipeline, CLEAN requires the convolution between an idealized version of the instrumental point-spread function (PSF), and a map collecting point
Emma Perracchione +5 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 +5 more
doaj +1 more source
ASTROSAT: Some Key Science Prospects [PDF]
, 2013 ASTROSAT is an astronomy satellite designed for simultaneous multi-wavelength studies in the Optical/UV and a broad X-ray energy range. With four X-ray instruments and a pair of UV-Optical telescopes, ASTROSAT will provide unprecendented opportunity for ...
Paul, Biswajit
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Offline assembly of the lobster-eye x-ray telescope based on optical reference transfer [PDF]
AIP AdvancesTo address the difficulty of focal alignment and optical axis calibration of lobster-eye x-ray telescopes in the absence of an x-ray vacuum environment, an offline visible-light alignment method based on optical reference transfer under atmospheric ...
Yifan Chen +13 more
doaj +1 more source
Hard X-ray emission of the Earth's atmosphere: Monte Carlo simulations [PDF]
, 2006 We perform Monte Carlo simulations of cosmic ray-induced hard X-ray radiation from the Earth's atmosphere. We find that the shape of the spectrum emergent from the atmosphere in the energy range 25-300 keV is mainly determined by Compton scatterings and ...
Churazov, E. +3 more
core +2 more sources
ixpeobssim: A simulation and analysis framework for the imaging X-ray polarimetry explorer
SoftwareX, 2022 ixpeobssim is a simulation and analysis framework specifically developed for the Imaging X-ray Polarimetry Explorer (IXPE). Given a source model and the response functions of the telescopes, it is designed to produce realistic simulated observations, in ...
Luca Baldini +9 more
doaj +1 more source