Particle Acceleration in Solar Flares From Radio and Hard X‐Ray Spectra
Sign Up to like & getrecommendations! Published in 2024 at "Astronomische Nachrichten"
DOI: 10.1002/asna.20240134
Abstract: For a deeper understanding of the physical processes at play in solar flares, it is necessary to analyze the flare emissions at multiple wavelengths. This multifrequency approach enables the characterization of energetic electrons accelerated from… read more here.
Keywords: ray spectra; solar flares; hard rays; hard ray ... See more keywords
Quasi-periodic pulsations in hard X-rays of partially occulted solar flares
Sign Up to like & getrecommendations! Published in 2019 at "Advances in Space Research"
DOI: 10.1016/j.asr.2019.06.006
Abstract: Abstract We investigated solar flares partially occulted by the solar disk observed by the Yohkoh satellite. We found that about 30–40% of them show quasi-periodic pulsations (QPPs) in hard X-rays (HXR). A lack of usually… read more here.
Keywords: occulted solar; partially occulted; quasi periodic; periodic pulsations ... See more keywords
Fabrication of diamond diffraction gratings for experiments with intense hard x-rays
Sign Up to like & getrecommendations! Published in 2017 at "Microelectronic Engineering"
DOI: 10.1016/j.mee.2017.02.002
Abstract: The demands on optical components to tolerate high radiation dose and manipulate hard x-ray beams that can fit the experiment requirements, are constantly increasing due to the advancements in the available x-ray sources. Here we… read more here.
Keywords: hard rays; fabrication diamond; intense hard; diffraction gratings ... See more keywords
Ultrafast photonic micro-systems to manipulate hard X-rays at 300 picoseconds
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-09077-1
Abstract: Time-resolved and ultrafast hard X-ray imaging, scattering and spectroscopy are powerful tools for elucidating the temporal and spatial evolution of complexity in materials. However, their temporal resolution has been limited by the storage-ring timing patterns… read more here.
Keywords: synchrotron; hard rays; pulse width; manipulate hard ... See more keywords
Discovery of evolving low-frequency QPOs in hard X-rays (∼100 keV) observed in black hole Swift J1727.8-1613 with AstroSat
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae1208
Abstract: We report the first detection of evolving Low-Frequency Quasi-periodic Oscillation (LFQPO) frequencies in hard X-rays upto 100 keV with AstroSat/LAXPC during ‘unusual’ outburst phase of Swift J1727.8-1613 in hard-intermediate state (HIMS). The observed LFQPO in 20–100 keV… read more here.
Keywords: j1727 1613; 100 kev; evolving low; hard rays ... See more keywords
Design of a monocapillary with an inner Al2O3/HfO2 multilayer to obtain focused monochromatic hard X-rays.
Sign Up to like & getrecommendations! Published in 2024 at "Applied optics"
DOI: 10.1364/ao.517654
Abstract: An X-ray monocapillary with an inner multilayer can be a promising optical device to obtain focused monochromatic X-rays. A focused beam is acquired via controlling the shape of the monocapillary meanwhile monochromatic X-rays are screened… read more here.
Keywords: optics; obtain focused; multilayer; monocapillary inner ... See more keywords
Depth-graded Mo/Si multilayer coatings for hard x-rays.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.007291
Abstract: This manuscript presents the first systematic study of non-periodic, broadband Mo/Si multilayer coatings with and without B 4C interface barrier layers for hard x-ray applications with large field of view. The photon energy of operation in… read more here.
Keywords: microscopy; multilayer coatings; coatings hard; graded multilayer ... See more keywords