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Journal articleLinker JA, Mikic Z, Biesecker DA, et al., 1999,
Magnetohydrodynamic modeling of the solar corona during Whole Sun Month
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 9809-9830, ISSN: 2169-9380- Author Web Link
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- Citations: 272
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Journal articleProffitt CR, Jönsson P, Litzén U, et al., 1999,
Goddard high resolution spectrograph observations of the BIII resonance doublet in early B stars:: Abundances and isotope ratios
, ASTROPHYSICAL JOURNAL, Vol: 516, Pages: 342-348, ISSN: 0004-637X- Author Web Link
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- Citations: 31
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Journal articleProffitt CR, Jönsson P, Litzén U, et al., 1999,
Goddard high-resolution spectrograph observations of the B III resonance doublet in early B stars: Abundances and isotope ratios
, Astrophysical Journal, Vol: 516, Pages: 342-348, ISSN: 0004-637XBoron 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 11B/10B isotope ratio in HD 886 is determined to be 4.7+1.1-1.0, and for HD 35299 a value of 3.7+0.8-0.6 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 11B/10B 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 articleRiley P, Gosling JT, McComas DJ, et al., 1999,
Relationship between Ulysses plasma observations and solar observations during the Whole Sun Month campaign
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 9871-9879, ISSN: 2169-9380- Author Web Link
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- Citations: 28
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Journal articleKernthaler SC, Toumi R, Haigh JD, 1999,
Some doubts concerning a link between cosmic ray fluxes and global cloudiness
, GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 863-865, ISSN: 0094-8276- Author Web Link
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- Citations: 78
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Journal articleKellogg PJ, Goetz K, Monson SJ, et al., 1999,
A search for Langmuir solitons in the Earth's foreshock
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 6751-6757, ISSN: 2169-9380- Author Web Link
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- Citations: 26
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Journal articleDesai MI, Marsden RG, Sanderson TR, et al., 1999,
Energy spectra of 50-keV to 20-MeV protons accelerated at corotating interaction regions at Ulysses
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 6705-6719, ISSN: 2169-9380- Author Web Link
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- Citations: 36
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Journal articleFunsten HO, Gosling JT, Riley P, et al., 1999,
Combined Ulysses solar wind and SOHO coronal observations of several west limb coronal mass ejections
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 6679-6689, ISSN: 2169-9380- Author Web Link
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- Citations: 19
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Journal articleZhong WY, Haigh JD, 1999,
The sensitivity of long-wave radiation fields and the response of a GCM to water-vapour continuum absorption
, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 125, Pages: 1383-1406, ISSN: 0035-9009- Author Web Link
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- Citations: 7
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Journal articleHaigh JD, 1999,
A GCM study of climate change in response to the 11-year solar cycle
, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 125, Pages: 871-892, ISSN: 0035-9009- Author Web Link
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- Citations: 139
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Journal articleBalogh A, Forsyth RJ, Lucek EA, et al., 1999,
Heliospheric magnetic field polarity inversions at high heliographic latitudes
, GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 631-634, ISSN: 0094-8276- Author Web Link
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- Citations: 99
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Journal articleBale SD, 1999,
Observation of topside ionospheric MF/HF radio emission from space
, GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 667-670, ISSN: 0094-8276- Author Web Link
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- Citations: 14
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Journal articleGaland M, Richmond AD, 1999,
Magnetic mirroring in an incident proton beam
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 4447-4455, ISSN: 2169-9380- Author Web Link
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- Citations: 26
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Journal articleSibeck DG, Borodkova NL, Schwartz SJ, et al., 1999,
Comprehensive study of the magnetospheric response to a hot flow anomaly
, \jgr, Vol: 104, Pages: 4577-4594-4577-4594 -
Journal articleJones GH, Balogh A, Horbury TS, 1999,
Observations of heliospheric planar and offset-planar magnetic structures
, GEOPHYSICAL RESEARCH LETTERS, Vol: 26, Pages: 13-16, ISSN: 0094-8276- Author Web Link
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- Citations: 17
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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 -
Journal articleChisham G, Schwartz SJ, Balikhin MA, et al., 1999,
AMPTE observations of mirror mode waves in the magnetosheath: Wavevector determination
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 437-447, ISSN: 2169-9380- Author Web Link
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- Citations: 38
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Journal articleLockwood M, Stamper R, Wild MN, et al., 1999,
Our changing Sun
, Astronomy and Geophysics, Vol: 40, Pages: 410-416, ISSN: 1366-8781Stellar 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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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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Conference paperHaigh JD, 1999,
Modelling the impact of solar variability on climate
, 9th Quadrennual SCOSTEP Symposium on Solar-Terrestrial Physics, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: 63-72, ISSN: 1364-6826- Author Web Link
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- Citations: 60
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Journal articleBalogh A, Bothmer V, Crooker NU, et al., 1999,
The solar origin of corotating interaction regions and their formation in the inner heliosphere - Report of Working Group 1
, SPACE SCIENCE REVIEWS, Vol: 89, Pages: 141-178, ISSN: 0038-6308- Author Web Link
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- Citations: 72
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Journal articleHorbury TS, Schmidt JM, 1999,
Development and effects of turbulence in connection with CIRs
, SPACE SCIENCE REVIEWS, Vol: 89, Pages: 61-76, ISSN: 0038-6308- Author Web Link
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- Citations: 21
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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 -
Conference paperPickering JC, 1999,
Laboratory astrophysics: Improving the atomic data by Fourier transform spectrometry
, 6th International Colloquium on Atomic Spect and Oscillator Strengths (ASOS 6), Publisher: ROYAL SWEDISH ACAD SCIENCES, Pages: 27-34, ISSN: 0281-1847- Author Web Link
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- Citations: 8
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Journal articleSchmidt JM, Cargill PJ, 1999,
Coronal mass ejections in a sheared flow
, 9Th European Meeting on Solar Physics: Magnetic Fields and Solar Processes, Vols 1 and 2, Vol: 448, Pages: 997-1002, ISSN: 0379-6566 -
Journal articleKunow H, Lee MA, Fisk LA, et al., 1999,
Corotating interaction regions at high latitudes -: Report of Working Group 3
, SPACE SCIENCE REVIEWS, Vol: 89, Pages: 221-268, ISSN: 0038-6308- Author Web Link
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- Citations: 17
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Conference paperTrotignon JG, Boström R, Burch JL, et al., 1999,
The ROSETTA Plasma Consortium:: Technical realization and scientific aims
, B1 1 Symposium of COSPAR Scientific Commission B Held at the 32nd COSPAR Scientific Assembly, Publisher: PERGAMON PRESS LTD, Pages: 1149-1158, ISSN: 0273-1177- Author Web Link
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- Citations: 19
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Journal articleCrooker NU, Gosling JT, Bothmer V, et al., 1999,
CIR morphology, turbulence, discontinuities, and energetic particles -: Report of Working Group 2
, SPACE SCIENCE REVIEWS, Vol: 89, Pages: 179-220, ISSN: 0038-6308- Author Web Link
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- Citations: 89
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Journal articleBalogh A, Gosling JT, Jokipii JR, et al., 1999,
Untitled - Introduction
, SPACE SCIENCE REVIEWS, Vol: 89, Pages: 1-3, ISSN: 0038-6308- Author Web Link
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- Citations: 19
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Journal articleSchmidt JM, Cargill PJ, 1999,
Accelerated density enhancements emerging from coronal streamers modelled according to LASCO observations
, 9Th European Meeting on Solar Physics: Magnetic Fields and Solar Processes, Vols 1 and 2, Vol: 448, Pages: 1211-1216, ISSN: 0379-6566
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