Zobrazeno 1 - 10
of 15
pro vyhledávání: '"M. D. Popescu"'
Publikováno v:
The Astrophysical Journal. 704:1385-1395
Here, we explore the nature of small-scale jet-like structures and their possible relation to explosive events and other known transient features, like spicules and macrospicules, using high-resolution spectroscopy obtained with the Solar and Heliosp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b27e476769b606916a43f8303bddb367
https://doi.org/10.1088/0004-637x/704/2/1385
https://doi.org/10.1088/0004-637x/704/2/1385
Publikováno v:
Advances in Space Research. 40:1021-1025
Aims Spicules and the higher macro-spicules (jet-like structures seen at the solar limb) are believed to be the dominant mechanism for mass ejection in the higher solar atmosphere outside active regions. But what is the connection between them and ot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a1ff876ecd15bc2e31629ccd062ad0f
https://doi.org/10.1016/j.asr.2007.06.068
https://doi.org/10.1016/j.asr.2007.06.068
Publikováno v:
Astronomy Education Review. 5:159-176
The Human Orrery is an innovative outdoor exhibit in the grounds of the Armagh Observatory in Northern Ireland. Stainless steel disks mark the orbits of the classical planets, two comets, and the dwarf planet Ceres with a high level of precision. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32b77f0f77fb8327ee25eac7a587589c
https://doi.org/10.3847/aer2006024
https://doi.org/10.3847/aer2006024
Publikováno v:
Astronomy & Astrophysics. 446:327-331
SUMER/SoHO data taken at a coronal hole boundary show a repetitive explosive event occurrence rate of around 3 min increasing to over 5 min towards the end of the activity. We suggest that the neighbouring oppositely directed closed and open field li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dfadea7be6fe1873a90f73df60ef6f3
https://doi.org/10.1051/0004-6361:20053826
https://doi.org/10.1051/0004-6361:20053826
Publikováno v:
Astronomy & Astrophysics. 442:1087-1090
Using time series data of spectral lines originating from a wide range of temperatures in the solar transition region, above a polar coronal hole, from SUMER (Solar Ultraviolet Measurements of Emitted Radiation) on SoHO (Solar and Heliospheric Observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1829bb05f5cfc23d3fbf151b3d3a2335
https://doi.org/10.1051/0004-6361:20053714
https://doi.org/10.1051/0004-6361:20053714
Publikováno v:
Astronomy & Astrophysics. 438:1115-1122
Here we study the dynamic properties of EUV spicules seen at the solar limb. The selected data were obtained as time series in polar coronal holes by SUMER/SoHO. The short exposure time and the almost fixed position of the spectrometer's slit allow t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83e2162b965358fe6eb2d4408a2ea7a7
https://doi.org/10.1051/0004-6361:20042579
https://doi.org/10.1051/0004-6361:20042579
Publikováno v:
Astronomy & Astrophysics. 421:339-348
We present a study of a high spatial resolution raster acquired on-disk with the SUMER (Solar Ultraviolet Measurements of Emitted Radiation) grating spectrograph on SoHO (the Solar and Heliospheric Observatory) in a polar Coronal Hole (CH) region. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88bb1f7e9a41496161b3616e6e4f2526
https://doi.org/10.1051/0004-6361:20034348
https://doi.org/10.1051/0004-6361:20034348
Publikováno v:
Magnetic Coupling between the Interior and Atmosphere of the Sun ISBN: 9783642028588
Waves are important in the heating of the solar corona and the acceleration of the solar wind. We have examined a long spectral time series sampling a southern coronal hole, observed on the 25 February 1997 using the SUMER spectrometer onboard SoHO.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::635b4fc5feaf17098e05de30b10116a1
https://doi.org/10.1007/978-3-642-02859-5_49
https://doi.org/10.1007/978-3-642-02859-5_49
Waves are important for the heating of the solar corona and the acceleration of the solar wind. We have examined a long spectral time series of a northern coronal hole observed on the 20th October 1996, with the SUMER spectrometer onboard SoHO. The o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::626960fc2654ec0611922e4505c79d48