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Conference paperPhillips JL, Bame SJ, Gary SP, et al., 1995,
Radial and meridional trends in solar wind thermal electron temperature and anisotropy: Ulysses
, Pages: 109-112, ISSN: 0038-6308Ulysses plasma measurement from 1.15 to 5.31 AU and from S6.4° to S48.3° solar latitude are used to assess the trends in the solar wind thermal electron temperature and anisotropy. Improved spacecraft potential corrections and data products have been incorporated. The radial temperature gradient is steeper than in previous determinations, but flatter than adiabatic. When normalized to 1 AU, temperature decrease with increasing latitude. Little change in the average thermal anisotropy has been seen during the mission. © 1995 Kluwer Academic Publishers.
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Journal articleReiner MJ, Anderson KA, Roelof E, et al., 1995,
Ulysses/Galileo observations of type III radio bursts and associated in-situ electrons and Langmuir waves
, Space Science Reviews, Vol: 72, Pages: 261-266, ISSN: 0038-6308Both the Ulysses and Galileo spacecraft detected energetic electrons and Langmuir waves that were associated with a type III radio burst on 10 December 1990. At the time of these observations, these spacecraft were in the ecliptic plane and separated by 0.4 AU, with Galileo near the Earth at 1 AU and Ulysses at 1.36 AU. From the measured electron arrival times, the propagation path lengths of the electrons to both Ulysses and Galileo were estimated to be significantly longer than the length of the Parker spiral. These long path lengths are interpreted as due to draping of the interplanetary magnetic field lines around a CME. The onset times of the Langmuir waves at Ulysses and Galileo coincided with the estimated arrival time of the 9 keV and 14 keV electrons, respectively. © 1995 Kluwer Academic Publishers.
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Conference paperMcComas DJ, Gosling JT, Hammond CM, et al., 1995,
Reconnection on open field lines ahead of coronal mass ejections
, Pages: 129-132, ISSN: 0038-6308Plasma and magnetic field signatures from 29 November 1990 indicate that the Ulysses spacecraft passed through a series of interplanetary structures that were most likely formed by magnetic reconnection on open field lines ahead of a coronal mass ejection (CME). This reconnection changed the magnetic topology of the upstream region by converting normal open interplanetary magnetic field into a pair of regions: one magnetically disconnected from the Sun and the other, a tongue, connected back to the Sun at both ends. This process provides a new method for producing both heat flux dropouts and counterstreaming suprathermal electron signatures in interplanetary space. In this paper we expand upon the 29 November case study and argue that reconnection ahead of CMEs should be less common at high heliolatitudes. © 1995 Kluwer Academic Publishers.
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Conference paperREUSS MK, KEPPLER E, FRANZ M, et al., 1995,
A PARTICLE EVENT AT 5-AU AND 20-DEGREES-SOUTHERN LATITUDE FROM MEASUREMENTS WITH THE EPAC INSTRUMENT ON ULYSSES
, Publisher: SPRINGER, Pages: 343-346, ISSN: 0038-6308- Author Web Link
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- Citations: 5
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Conference paperMURPHY N, SMITH EJ, TSURUTANI BT, et al., 1995,
FURTHER-STUDIES OF WAVES ACCOMPANYING THE SOLAR-WIND PICK-UP OF INTERSTELLAR HYDROGEN
, Publisher: SPRINGER, Pages: 447-453, ISSN: 0038-6308- Author Web Link
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- Citations: 48
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Conference paperSCIME EE, BAME SJ, PHILLIPS JL, et al., 1995,
LATITUDINAL VARIATIONS IN THE SOLAR-WIND ELECTRON HEAT-FLUX
, Publisher: SPRINGER, Pages: 105-108, ISSN: 0038-6308- Author Web Link
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- Citations: 8
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Conference paperRILEY P, SONETT CP, BALOGH A, et al., 1995,
ALFVENIC FLUCTUATIONS IN THE SOLAR-WIND - A CASE-STUDY USING ULYSSES MEASUREMENTS
, Publisher: SPRINGER, Pages: 197-200, ISSN: 0038-6308- Author Web Link
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- Citations: 12
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Conference paperBALOGH A, GONZALEZESPARZA JA, FORSYTH RJ, et al., 1995,
INTERPLANETARY SHOCK-WAVES - ULYSSES OBSERVATIONS IN AND OUT OF THE ECLIPTIC-PLANE
, Publisher: SPRINGER, Pages: 171-180, ISSN: 0038-6308- Author Web Link
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- Citations: 96
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Conference paperKEPPLER E, FRANZ M, KORTH A, et al., 1995,
ENERGETIC PARTICLE OBSERVATIONS AT HIGH HELIOGRAPHIC LATITUDES
, Publisher: SPRINGER, Pages: 285-290, ISSN: 0038-6308- Author Web Link
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- Citations: 10
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Conference paperSMITH EJ, NEUGEBAUER M, BALOGH A, et al., 1995,
ULYSSES OBSERVATIONS OF LATITUDE GRADIENTS IN THE HELIOSPHERIC MAGNETIC-FIELD - RADIAL COMPONENT AND VARIANCES
, Publisher: SPRINGER, Pages: 165-170, ISSN: 0038-6308- Author Web Link
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- Citations: 58
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Conference paperGOLDSTEIN BE, NEUGEBAUER M, GOSLING JT, et al., 1995,
ULYSSES OBSERVATIONS OF SOLAR-WIND PLASMA PARAMETERS IN THE ECLIPTIC FROM 1.4-AU TO 5.4-AU AND OUT OF THE ECLIPTIC
, Publisher: SPRINGER, Pages: 113-116, ISSN: 0038-6308- Author Web Link
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- Citations: 10
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Conference paperGOSLING JT, BAME SJ, MCCOMAS DJ, et al., 1995,
CORONAL MASS EJECTIONS AT HIGH HELIOGRAPHIC LATITUDES - ULYSSES
, Publisher: SPRINGER, Pages: 133-136, ISSN: 0038-6308- Author Web Link
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- Citations: 21
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Journal articleTSURUTANI BT, SMITH EJ, HO CM, et al., 1995,
INTERPLANETARY DISCONTINUITIES AND ALFVEN WAVES
, SPACE SCIENCE REVIEWS, Vol: 72, Pages: 205-210, ISSN: 0038-6308- Author Web Link
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- Citations: 23
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Conference paperMCCOMAS DJ, GOSLING JT, HAMMOND CM, et al., 1995,
RECONNECTION ON OPEN-FIELD LINES AHEAD OF CORONAL MASS EJECTIONS
, Publisher: SPRINGER, Pages: 129-132, ISSN: 0038-6308- Author Web Link
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- Citations: 9
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Conference paperWINTERHALTER D, NEUGEBAUER M, GOLDSTEIN BE, et al., 1995,
MAGNETIC HOLES IN THE SOLAR-WIND AND THEIR RELATION TO MIRROR-MODE STRUCTURES
, Publisher: SPRINGER, Pages: 201-204, ISSN: 0038-6308- Author Web Link
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- Citations: 50
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Conference paperSANDERSON TR, MARSDEN RG, WENZEL KP, et al., 1995,
HIGH-LATITUDE OBSERVATIONS OF ENERGETIC IONS DURING THE FIRST ULYSSES POLAR PASS
, Publisher: SPRINGER, Pages: 291-296, ISSN: 0038-6308- Author Web Link
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- Citations: 17
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Conference paperMCKIBBEN RB, SIMPSON JA, ZHANG M, et al., 1995,
ULYSSES OUT-OF-ECLIPTIC OBSERVATIONS OF 27-DAY VARIATIONS IN HIGH-ENERGY COSMIC-RAY INTENSITY
, Publisher: SPRINGER, Pages: 403-408, ISSN: 0038-6308- Author Web Link
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- Citations: 40
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Conference paperGOLDSTEIN BE, NEUGEBAUER M, GOSLING JT, et al., 1995,
Ulysses observations of solar wind plasma parameters in the ecliptic from 1.4 to 5.4 AU and out of the ecliptic
, 28th ESLAB Symposium - The High Latitude Heliosphere, Pages: 113-116We report observations of radial and latitudinal gradients of Ulysses plasma parameters. The solar wind velocity increased rapidly with latitude from 0 degrees to 35 degrees, then remained approximately constant at higher latitudes. Solar wind density decreased rapidly from 0 degrees to 35 degrees of latitude, and also was approximately constant beyond that latitude. The mass flux similarly decreased away from the equator (but less than the density), whereas the momentum flux was relatively constant. The radial gradient of the entropy at high latitude indicated a value for the polytrope index of about 1.72 (close to adiabatic); the in-ecliptic estimates of radial gradients for temperature and entropy may be biased by temporal variation. A striking increase in the alpha particle-proton velocity difference with latitude is found.
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Conference paperGOSLING JT, BAME SJ, MCCOMAS DJ, et al., 1995,
Coronal mass ejections at high heliographic latitudes: Ulysses
, 28th ESLAB Symposium - The High Latitude Heliosphere, Pages: 133-136Nine coronal mass ejections (CMEs) have been detected in the solar wind by the Ulysses plasma experiment between 31 degrees and 61 degrees South. One of these events, which was also a magnetic cloud, was directly associated with an event observed by the soft X-ray telescope on Yohkoh in which large magnetic loops formed in the solar corona directly beneath Ulysses. This association suggests that the flux rope topology of the magnetic cloud resulted from reconnection between the ''legs'' of neighboring magnetic loops within the rising CME. The average CME speed (similar to 740 km s(-1)) at these latitudes was comparable to that of the normal solar wind there and is much greater than average CME speeds observed either in the solar wind in the ecliptic plane or in the corona close to the Sun. We suggest that the same basic acceleration process applies to both slow CMEs and the normal solar wind at any latitude.
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Conference paperPHILLIPS JL, BAME SJ, GARY SP, et al., 1995,
RADIAL AND MERIDIONAL TRENDS IN SOLAR-WIND THERMAL ELECTRON-TEMPERATURE AND ANISOTROPY - ULYSSES
, Publisher: SPRINGER, Pages: 109-112, ISSN: 0038-6308- Author Web Link
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- Citations: 26
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Conference paperMACDOWALL RJ, DESCH MD, KAISER ML, et al., 1995,
THE 3-DIMENSIONAL EXTENT OF A HIGH-SPEED SOLAR-WIND STREAM
, Publisher: SPRINGER, Pages: 125-128, ISSN: 0038-6308- Author Web Link
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- Citations: 5
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Conference paperFORSYTH RJ, 1995,
THE HIGH-LATITUDE HELIOSPHERIC MAGNETIC-FIELD
, Publisher: SPRINGER, Pages: 153-163, ISSN: 0038-6308- Author Web Link
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- Citations: 16
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Conference paperSOLOMON J, CORNILLEAUWEHRLIN N, CANU P, et al., 1995,
INTERACTION BETWEEN WHISTLER-MODE WAVES AND ELECTRONS IN THE VICINITY OF INTERPLANETARY SHOCKS AS SEEN BY ULYSSES - A PRELIMINARY-STUDY
, Publisher: SPRINGER, Pages: 181-184, ISSN: 0038-6308- Author Web Link
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- Citations: 3
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Journal articleEVANS SJ, HAIGH JD, 1995,
THE RETRIEVAL OF TOTAL OPTICAL DEPTH AND EFFECTIVE DROPLET RADIUS OF CLOUDS FROM SOLAR REFLECTION MEASUREMENTS USING THE ALONG-TRACK SCANNING RADIOMETER-2 (ATSR-2)
, GEOPHYSICAL RESEARCH LETTERS, Vol: 22, Pages: 695-698, ISSN: 0094-8276- Author Web Link
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- Citations: 3
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Journal articleRUZMAIKIN AA, FEYNMAN J, GOLDSTEIN BE, et al., 1995,
INTERMITTENT TURBULENCE IN SOLAR-WIND FROM THE SOUTH POLAR HOLE
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 100, Pages: 3395-3403, ISSN: 2169-9380- Author Web Link
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- Citations: 79
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Journal articleBUTTIGHOFFER A, PICK M, ROELOF EC, et al., 1995,
CORONAL ELECTRON STREAM AND LANGMUIR WAVE DETECTION INSIDE A PROPAGATION CHANNEL AT 4.3 AU
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 100, Pages: 3369-3381, ISSN: 2169-9380- Author Web Link
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- Citations: 17
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Journal articlePantellini FGE, Schwartz SJ, 1995,
Electron temperature effects in the linear proton mirror instability
, \jgr, Vol: 100, Pages: 3539-3549-3539-3549 -
Journal articleLEAMON RJ, DOUGHERTY MK, SOUTHWOOD DJ, et al., 1995,
MAGNETIC NULLS IN THE OUTER MAGNETOSPHERE OF JUPITER - DETECTIONS BY PIONEER AND VOYAGER SPACECRAFT
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 100, Pages: 1829-1835, ISSN: 2169-9380- Author Web Link
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- Citations: 8
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Conference paperBALOGH A, 1995,
MAGNETIC-FIELDS IN THE HIGH-LATITUDE HELIOSPHERE
, 14th European Cosmic Ray Symposium (14th ECRS) - Cosmic Rays 94: Solar, Heliospheric, Astrophysical and High-Energy Aspects, Publisher: ELSEVIER, Pages: 69-74, ISSN: 0550-3213- Author Web Link
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- Citations: 3
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Journal articleGosling JT, McComas DJ, Phillips JL, et al., 1995,
A CME‐driven solar wind disturbance observed at both low and high heliographic latitudes
, Geophysical Research Letters, Vol: 22, Pages: 1753-1756, ISSN: 0094-8276A solar wind disturbance produced by a fast coronal mass ejection, CME, that departed from the Sun on Feburary 20, 1994 was observed in the ecliptic plane at 1 AU by IMP 8 and at high heliographic latitudes at 3.53 AU by Ulysses. In the ecliptic the disturbance included a strong forward shock but no reverse shock, while at high latitudes the disturbance was bounded by a relatively weak forward‐reverse shock pair. It is clear that the disturbance in the ecliptic plane was driven primarily by the relative speed between the CME and a slower ambient solar wind ahead, whereas at higher latitudes the disturbance was driven by expansion of the CME. The combined IMP 8 and Ulysses observations thus provide a graphic illustration of how a single fast CME can produce very different types of solar wind disturbances at low and high heliographic latitudes. Simple numerical simulations help explain observed differences at the two spacecraft. Copyright 1995 by the American Geophysical Union.
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