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Journal articleBale SD, Reiner MJ, Bougeret JL, et al., 1999, , GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 1573-1576, ISSN: 0094-8276
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- Citations: 184
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Journal articleRishbeth H, M眉ller-Wodarg ICF, 1999, , ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES, Vol: 17, Pages: 794-805, ISSN: 0992-7689
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- Citations: 90
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Conference paperGrappin R, Mangeney A, Schwartz SJ, et al., 1999, , Pages: 329-332-329-332
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Journal articleRego D, Achilleos N, Stallard T, et al., 1999, , NATURE, Vol: 399, Pages: 121-124, ISSN: 0028-0836
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- Citations: 59
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Journal articleRiley P, Gosling JT, McComas DJ, et al., 1999, , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 9871-9879, ISSN: 2169-9380
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- Citations: 28
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Journal articleProffitt CR, J枚nsson P, Litz茅n U, et al., 1999, , ASTROPHYSICAL JOURNAL, Vol: 516, Pages: 342-348, ISSN: 0004-637X
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- Citations: 33
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Journal articleLinker JA, Mikic Z, Biesecker DA, et al., 1999, , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 9809-9830, ISSN: 2169-9380
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- Citations: 308
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Journal articleProffitt CR, J枚nsson P, Litz茅n U, et al., 1999, , Astrophysical Journal, Vol: 516, Pages: 342-348, ISSN: 0004-637X
Boron abundances and isotope ratios in two early B stars have been measured by using the Hubble Space Telescope's Goddard High-Resolution Spectrograph (GHRS) in order to observe the B III resonance doublet near 2066 Å. We also report new experimental and theoretical results for the wavelengths, isotope shift, and hyperfine structure of these boron lines. In HD 886 (γ Pegasi; B2 IV), and HD 35299 (B1 V) the abundance of boron is about a factor of 2 lower than that inferred from solar system meteorites. The <sup>11</sup>B/<sup>10</sup>B isotope ratio in HD 886 is determined to be 4.7<sup>+1.1</sup><inf>-1.0</inf>, and for HD 35299 a value of 3.7<sup>+0.8</sup>-<inf>0.6</inf> is found. These values are consistent with the solar system isotope ratio. In a third star, HD 3360 (ζ Cassiopeiae; B2 IV), our GHRS observations show that the boron abundance is a factor of 40 below the solar system abundance. Our results for HD 886 and HD 35299 appear to be consistent with little dispersion in the initial boron-to-oxygen ratio among Population I stars and a universal <sup>11</sup>B/<sup>10</sup>B isotope ratio. However, the abundance measured for HD 3360 shows that either some stars suffer significant boron depletion while still in the core-hydrogen burning phase of their evolution, or there is indeed a very wide variation in initial Population I boron abundances. A much-improved understanding of boron astration in early B stars will be required before this question can be resolved.
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Journal articleKellogg PJ, Goetz K, Monson SJ, et al., 1999, , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 6751-6757, ISSN: 2169-9380
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- Citations: 26
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Journal articleKernthaler SC, Toumi R, Haigh JD, 1999, , GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 863-865, ISSN: 0094-8276
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- Citations: 81
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Journal articleFunsten HO, Gosling JT, Riley P, et al., 1999, , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 6679-6689, ISSN: 2169-9380
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- Citations: 19
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Journal articleDesai MI, Marsden RG, Sanderson TR, et al., 1999, , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 6705-6719, ISSN: 2169-9380
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- Citations: 39
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Journal articleHaigh JD, 1999, , QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 125, Pages: 871-892, ISSN: 0035-9009
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- Citations: 143
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Journal articleZhong WY, Haigh JD, 1999, , QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 125, Pages: 1383-1406, ISSN: 0035-9009
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- Citations: 7
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Journal articleBale SD, 1999, , GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 667-670, ISSN: 0094-8276
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- Citations: 14
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Journal articleBalogh A, Forsyth RJ, Lucek EA, et al., 1999, , GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 631-634, ISSN: 0094-8276
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- Citations: 113
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Journal articleGaland M, Richmond AD, 1999, , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 4447-4455, ISSN: 2169-9380
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- Citations: 26
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Journal articleSibeck DG, Borodkova NL, Schwartz SJ, et al., 1999, , \jgr, Vol: 104, Pages: 4577-4594-4577-4594
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Journal articleChisham G, Schwartz SJ, Balikhin MA, et al., 1999, , JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 437-447, ISSN: 2169-9380
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- Citations: 39
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Conference paperRufus J, Pickering J, Thorne A, et al., 1999,
Molecular absorption cross-section measurements by FTS in the UV
, Pages: 122-123 -
Conference paperPickering JC, Thome AP, Cox G, et al., 1999,
Fourier Transform Spectrometry of Doubly Ionized Atoms
, Pages: 31-33This project has shown that with the extension of the VUV range of the IC FT spectrometer down to 140nm and a Penning light source, the urgently needed improvements in accuracy of the laboratory atomic data for doubly ionized species are now possible. An extensive study of Fe III is in progress and will be followed by other studies of doubly charged transition group ions, e.g., Ni III and Mn III. This work was supported by NASA Grant NAGW-4888 to Harvard University, by the Paul Instrument Fund of the Royal Society, by an SAO Innovative Research & Development Grant, a NATO grant for International Collaboration in Research, by PPARC of the UK, and by the Royal Society. The authors gratefully acknowledge the advice and assistance of, R. Kling, M. Kock, C. Heise, R. C. M. Learner, W. Mende, W. H. Parkinson, and particularly D. S. Leckrone.
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Journal articleLockwood M, Stamper R, Wild MN, et al., 1999, , Astronomy and Geophysics, Vol: 40, Pages: 410-416, ISSN: 1366-8781
Stellar astronomy tells us much about the long-term evolution of our Sun while forensic evidence (for example, cosmic-ray products in ice cores) gives us indications of its fluctuations over the last millennium. However, such studies do not give us a sufficiently detailed understanding of solar change over the last century to allow us to detect and quantify any role that the Sun might have played in the observed rise in average surface temperatures on Earth. This paper describes recent research that has filled this gap by applying advances in our understanding of the effects and structure of the solar wind to historical data on the Earth's magnetic field.
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Journal articleJones GH, Balogh A, Horbury TS, 1999, , GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 13-16, ISSN: 0094-8276
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- Citations: 19
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Conference paperHaigh JD, 1999, , 9th Quadrennual SCOSTEP Symposium on Solar-Terrestrial Physics, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: 63-72, ISSN: 1364-6826
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- Citations: 62
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Journal articleLucek EA, Horbury TS, Balogh A, et al., 1999,
Plasma signatures of radial field power dropouts
, Solar Wind Nine, Vol: 471, Pages: 475-478, ISSN: 0094-243X -
Journal articleHorbury TS, Schmidt JM, 1999, , SPACE SCIENCE REVIEWS, Vol: 89, Pages: 61-76, ISSN: 0038-6308
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- Citations: 22
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Journal articleKunow H, Lee MA, Fisk LA, et al., 1999, , SPACE SCIENCE REVIEWS, Vol: 89, Pages: 221-268, ISSN: 0038-6308
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- Citations: 19
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Journal articleForsyth RJ, Marsch E, 1999, , SPACE SCIENCE REVIEWS, Vol: 89, Pages: 7-20, ISSN: 0038-6308
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- Citations: 48
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Journal articleBalogh A, Gosling JT, Jokipii JR, et al., 1999, , SPACE SCIENCE REVIEWS, Vol: 89, Pages: 1-3, ISSN: 0038-6308
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- Citations: 19
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Journal articleBantges RJ, Russell JE, Haigh JD, 1999,
Cirrus cloud top-of-atmosphere radiance spectra in the thermal infrared
, Journal of Quantitative Spectroscopy & Radiative Transfer, Vol: 63, Pages: 487-498
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