Zobrazeno 1 - 9
of 9
pro vyhledávání: '"H. R. M. Kay"'
Publikováno v:
Astronomy & Astrophysics. 447:719-725
The non-thermal broadening of soft X-ray emission lines is commonly seen during the early stages of solar flares and is thought to be associated with either the initial flare energy release or the evaporation of chromospheric plasma. Here we investig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f920672cd7b143554db5357b78dd0b50
https://doi.org/10.1051/0004-6361:20053240
https://doi.org/10.1051/0004-6361:20053240
Publikováno v:
The Astrophysical Journal. 621:L125-L128
X-ray spectra of the late-type star AB Dor, obtained with the XMM-Newton satellite are analysed. AB Dor was particularly active during the observations. An emission measure reconstruction technique is employed to analyse flare and quiescent spectra,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de7172138550469487dc72859d04925f
https://doi.org/10.1086/429288
https://doi.org/10.1086/429288
Autor:
W. R. J. Rolleston, H. R. M. Kay, Robert Ryans, Jonathan Smoker, Esteban Bajaja, W. G. L. Pöppel, C. J. Mooney, B.B. Lynn, P. M. W. Kalberla, Philip Dufton, Francis P. Keenan
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 352:1279-1290
We compare existing high spectral resolution (R=40,000) CaII K observations towards 88 mainly B-type stars, and new observations at R=10,000 towards 3 stars, with 21-cm HI emission-line profiles, in order to search for optical absorption towards know
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21fd8446c1b43bf753cccb9639f62d2d
https://doi.org/10.1111/j.1365-2966.2004.08016.x
https://doi.org/10.1111/j.1365-2966.2004.08016.x
Autor:
H.T. McGillivray, H. R. M. Kay, W. R. J. Rolleston, Philip Dufton, Robert Ryans, Jonathan Smoker, M. Arnal, Donal O'Donoghue, Nigel Hambly, R. Morras, Francis P. Keenan, C. J. Mooney, D. Kilkenny
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 346:119-134
We present high-resolution (R = λ/Δλ ∼ 40 000) Ca II K interstellar observations (λ a i r = 3933.66 A) towards 88 mainly B-type stars, of which 74 are taken from the Edinburgh-Cape or Palomar-Green surveys, and 81 have‖b‖ > 25°. The majori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47fa3faa43fe38f581e569bfaf57ebb3
https://doi.org/10.1046/j.1365-2966.2003.07074.x
https://doi.org/10.1046/j.1365-2966.2003.07074.x
Publikováno v:
Advances in Space Research. 32:1051-1056
The complex: relationship between solar flares and coronal mass ejections is investigated using a comparison of flare parameters for a total of 69 ejective and non-ejective flares. In the case of solar flares which do not show mass ejection there see
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::486ee1a9b6c8a57283c8d3afc9653f33
https://doi.org/10.1016/s0273-1177(03)00308-9
https://doi.org/10.1016/s0273-1177(03)00308-9
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 341:1388-1392
We present the results of a search for X-ray variability in the galactic open cluster NGC 2516. This cluster has been observed on 8 occasions using XMM-Newton making it an excellent target for such a study. We find 4 sources which show significant va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::981a3bffa35f44674b6b665d5ee37be8
https://doi.org/10.1046/j.1365-8711.2003.06517.x
https://doi.org/10.1046/j.1365-8711.2003.06517.x
Publikováno v:
Astronomy & Astrophysics. 400:779-784
The complex relationship between solar flares and coronal mass ejections is investigated using a comparison of flare parameters for a total of 69 ejective and non-ejective flares. In the case of solar flares which do not show mass ejection there seem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64fc423df681da8d5d8ed279e9109f15
https://doi.org/10.1051/0004-6361:20030095
https://doi.org/10.1051/0004-6361:20030095
Autor:
A. J. J. Raassen, R. Mewe, L. van Driel-Gesztelyi, Graziella Branduardi-Raymont, Manuel Guedel, Louise K. Harra, H. R. M. Kay, Urmila Mitra-Kraev, Marc Audard
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2005, 431, pp.679-686. ⟨10.1051/0004-6361:20041201⟩
Astronomy & Astrophysics, 431(2), 679-686. EDP Sciences
Astronomy and Astrophysics-A&A, 2005, 431, pp.679-686. ⟨10.1051/0004-6361:20041201⟩
Astronomy & Astrophysics, 431(2), 679-686. EDP Sciences
We present simultaneous ultraviolet and X-ray observations of the dMe-type flaring stars AT Mic, AU Mic, EV Lac, UV Cet and YZ CMi obtained with the XMM-Newton observatory. During 40 hours of simultaneous observation we identify 13 flares which occur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c7ea8833899c89ec35d6ec66b9497c9
https://hal.science/hal-03733313/file/aa1201.pdf
https://hal.science/hal-03733313/file/aa1201.pdf
Autor:
Smoker, J. V., W. R. J. Rolleston, J. V., H. R. M. Kay, J. V., Kilkenny, D., Morras, R., Arnal, M., Keenan, F. P., Mooney, C. J., Dufton, P. L., R. S. I. Ryans, P. L., Hambly, N. C., O'Donoghue, D., McGillivray, H.
Publikováno v:
Monthly Notices of the Royal Astronomical Society; 11/21/2003, Vol. 346 Issue 1, p119, 16p