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pro vyhledávání: '"Phillips, K-A"'
New Solar Flare Calcium Abundances with no Surprises: Results from the SMM Bent Crystal Spectrometer
The calcium abundance in flare plasmas is estimated using X-ray spectra from the Solar Maximum Mission Bent Crystal Spectrometer (BCS) during the decays of 194 flares (GOES classifications from B6.4 to X13) occurring between 1980 and 1989. Previous w
Externí odkaz:
http://arxiv.org/abs/2203.02257
Observations of the dynamics of solar coronal structures are necessary to investigate space weather phenomena and global heating of the corona. The profiles of high temperature lines emitted by the hot plasma are usually integrated by narrow band fil
Externí odkaz:
http://arxiv.org/abs/2110.01645
The Multichannel Subtractive Double Pass (MSDP) is an imaging spectroscopy technique, which allows observations of spectral line profiles over a 2D field of view with high spatial and temporal resolution. It has been intensively used since 1977 on va
Externí odkaz:
http://arxiv.org/abs/2101.03918
The Bent Crystal Spectrometer (BCS) on the NASA Solar Maximum Mission spacecraft observed the X-ray spectra of numerous solar flares during the periods 1980 February to November and 1984~--~1989. The instrument, the first of its kind to use curved cr
Externí odkaz:
http://arxiv.org/abs/2004.03241
The SphinX X-ray spectrophotometer on the {\em CORONAS-PHOTON}\/ mission observed the 1~--~15\,keV X-ray spectrum of the spatially integrated solar corona during the deep minimum of 2009, when solar activity was exceptionally low. Its sensitivity for
Externí odkaz:
http://arxiv.org/abs/1912.03082
The rare CI carbonaceous chondrites are the most aqueously altered and chemically primitive meteorites but due to their porous nature and high abundance of volatile elements are susceptible to terrestrial weathering. The Ivuna meteorite, type specime
Externí odkaz:
http://arxiv.org/abs/1909.13064
Publikováno v:
In Applied Energy 15 July 2023 342
Publikováno v:
Phys. Rev. E 100, 022402 (2019)
By combining analytical and numerical calculations, we investigate the minimal-energy shape of short DNA loops of approximately $100$ base pairs (bp). We show that in these loops the excess twist density oscillates as a response to an imposed bending
Externí odkaz:
http://arxiv.org/abs/1904.04677
Autor:
Rudawy, P., Radziszewski, K., Berlicki, A., Phillips, K. J. H., Jess, D. B., Keys, P. H., Keenan, F. P.
We report on a search for short-period intensity variations in the green-line FeXIV 530.3 nm emission from the solar corona during the 21 August 2017 total eclipse viewed from Idaho in the United States. Our experiment was performed with a much more
Externí odkaz:
http://arxiv.org/abs/1903.06076