Science Archives Publication System

Non-thermal velocities in flare plasmas

DOI: 10.1016/0273-1177(95)00539-Q Bibcode: 1996AdSpR..17d..47A

Benna, C.; Antonucci, E.; Martin, R. +1 more

The analysis of the profile and intensity of the soft X-ray lines formed in the wavelength range from 1.8 Angstroms to 20 Angstroms, observed with the Soft X-ray Polychromator of the Solar Maximum Mission (SMM), shows that solar flare plasmas are characterized by non-thermal velocities. Flare plasmas in general consist of two components at differe…

1996 • Advances in Space Research

SOHO 1

Starspot and Chromospheric Activity of lambda And in 1978--1995

Bibcode: 1996AcA....46..335G

Glebocki, R.; Sikorski, J.

UBV photometry and UV spectra from the IUE satellite are analyzed for search of relation between photospheric and chromospheric activity in lambda And. We find no correlation between intensity variations of chromospheric and TR emissions and visibility of spots. Intensities of TR lines are proportional to the MgII emissions. UV continuum follows f…

1996 • Acta Astronomica

IUE 1

Cool gaze at heartless galaxies

DOI: 10.1038/384211a0 Bibcode: 1996Natur.384..211G

Gilmore, Gerry

1996 • Nature

ISO 1

The Ulysses mission: an introduction.

DOI: 10.1007/BF02508130 Bibcode: 1996NCimC..19..909M

Smith, E. J.; Marsden, R. G.

On 30 September 1995, Ulysses completed its initial, highly successful, survey of the polar regions of the heliosphere in both southern and northern hemispheres, thereby fulfilling its prime mission. The results obtained to date are leading to a revision of many earlier ideas concerning the solar wind and the heliosphere. Now embarking on the seco…

1996 • Nuovo Cimento C Geophysics Space Physics C

Ulysses 1

Ulysses observations of corotation lags in the dayside Jovian magnetosphere: An evaluation of the hinged magnetodisc and magnetic anomaly models

DOI: 10.1029/96JA02042 Bibcode: 1996JGR...10121439H

Dougherty, Michele K.; Phillips, John L.; Hoogeveen, Gary W.

Ulysses observations during the inbound leg of the February 1992 encounter with Jupiter offer the opportunity to evaluate both the hinged magnetodisc and the magnetic anomaly models currently used to describe the Jovian magnetospheric corotation lag. Particle and field detectors on board Ulysses measure signatures of the current and plasma sheets.…

1996 • Journal of Geophysical Research

Ulysses 1

Numerical simulations of non-adiabatic particle motions in the Jovian magnetosphere; comparisons with Ulysses observations

DOI: 10.1016/0032-0633(95)00096-8 Bibcode: 1996P&SS...44..153D

Keppler, E.; Korth, A.; Quenby, J. J. +3 more

The Ulysses encounter with Jupiter gave a unique opportunity for the study of ions in the Jovian day side in the range 0.3 < ( E/nuc) < 6 MeV. The EPAC experiment has already provided a wealth of interesting results concerning the composition and the anisotropies in the magnetosphere (Krupp et al., Planet. Space Sci.41, 953, 1993), however a…

1996 • Planetary and Space Science

Ulysses 1

Plasma diagnostics for SUMER on board the SOHO mission

Bibcode: 1996BASI...24..333D

Dwivedi, B. N.

1996 • Bulletin of the Astronomical Society of India

SOHO 1

Astrometry in the Future

DOI: 10.1007/BF00048828 Bibcode: 1996CeMDA..66...97S

Seidelmann, P. K.

The introduction of the extragalactic reference frame and the availability of the Hipparcos and Tycho catalogs will have major impacts on changing the accuracy levels of astrometry in the future. There is a need for accurate densification of the reference frames down to at least 20^th magnitude, Also accurate space motions and distances …

1996 • Celestial Mechanics and Dynamical Astronomy

Hipparcos 1

The case of the fastest stellar wind in central stars of planetary nebulae

DOI: 10.1007/BF00645501 Bibcode: 1996Ap&SS.238...97P

Perinotto, Mario; Patriarchi, Patrizio

An exceptionally fast wind (8500 km/s) was suggested to occur in the central star of the planetary nebula K1-16, belonging to the class of the PG 1159 H-deficient pre-white dwarfs. To ascertain the reality of such a fast wind this star has been observed with the HST telescope using the GHRS in the zone of theCIV 155.0 nm doublet. The HST data and …

1996 • Astrophysics and Space Science

IUE 1

Coronal transport and storage of energetic particles

DOI: 10.1016/0273-1177(95)00501-5 Bibcode: 1996AdSpR..17c..75S

Simnett, G. M.

There is increasing evidence that regions of the corona or the inner heliosphere sometimes impede the escape of energetic particles accelerated at the Sun. Certain impulsive radio, X- and gamma-ray emissions indicate times at which major particle acceleration has recently occurred. The more gradual emissions are harder to interpret, and may reflec…

1996 • Advances in Space Research

Ulysses 1