Science Archives Publication System

Cosmic electron gradients in the inner heliosphere

DOI: 10.1029/2002GL015532 Bibcode: 2002GeoRL..29.2096C

Heber, Bernd; Clem, John; Evenson, Paul

We report the first determination of the radial gradient of cosmic ray electrons in the inner heliosphere at rigidities of 1.2 and 2.5 GV from 1 to 5 AU. Since this determination was made during the A⁺ solar polarity state, it also constitutes the only determination for particles in a polarity state opposite to their charge sign. We fin…

2002 • Geophysical Research Letters

Ulysses 7

Observing programs of the Kyiv meridian axial circle equipped with a CCD micrometer

DOI: 10.1051/0004-6361:20020316 Bibcode: 2002A&A...386.1153T

Andruk, V.; Babenko, Yu.; Lazorenko, P. +6 more

The present status of the Kyiv meridian axial circle after its refurbishment is described. The mounting of a new micrometer with the front-illuminated CCD 1040x1160 allows to observe stars up to V=16 mag. For the stars of 11-14 mag, the internal positional accuracy of a single observation is 0.05-0.10'', and stellar V values are determined with an…

2002 • Astronomy and Astrophysics

Hipparcos 7

ISOPHOT far-infrared photometry of NGC 3079

DOI: 10.1051/0004-6361:20020922 Bibcode: 2002A&A...391..911K

Walker, H. J.; Klaas, U.

FIR photometry (from 15 mu m to 200 mu m) of NGC 3079 which is resolved by ISOPHOT at 60 mu m is presented. With the assumption of an unresolved core plus an extended disk component, good consistency with IRAS and SCUBA data is found. The SED of the total flux between 60 mu m and the submm can be modelled by the superposition of three dust compone…

2002 • Astronomy and Astrophysics

ISO 6

Solar and Heliospheric Observatory/Solar Ultraviolet Measurements of Estimated Radiation ultraviolet array detector distortion correction

DOI: 10.1063/1.1512326 Bibcode: 2002RScI...73.3982M

Moran, Thomas G.

We present the technique used to correct the geometric distortion in the Solar and Heliospheric Observatory/Solar Ultraviolet Measurement of Estimated Radiation (SOHO/SUMER) ultraviolet spectrograph images. Electric and magnetic fields within the SUMER crossed delay line detectors and optical misalignment within the SUMER spectrograph cause focal …

2002 • Review of Scientific Instruments

SOHO 6

UV line intensity and flow velocity distributions in two coronal mass ejections as deduced by UVCS-SOHO observations

DOI: 10.1051/0004-6361:20011802 Bibcode: 2002A&A...383.1032V

Uzzo, M.; Spadaro, D.; Ventura, R. +1 more

The Ultraviolet Coronagraph Spectrometer (UVCS) instrument onboard the SOHO satellite observed two coronal mass ejections on November 2 and 3, 2000, related to the eruptions of a large filament structure in an active region close to the West limb of the Sun, and of a prominence near the South Pole, respectively. Intensity and profile of the O VI r…

2002 • Astronomy and Astrophysics

SOHO 6

Analysis of archival EXOSAT data on the X-ray burst source Serpens X-1

DOI: 10.1051/0004-6361:20021343 Bibcode: 2002A&A...395..141S

Min, K. W.; Seon, K. -I.

We present analysis of data obtained from the Medium Energy proportional counter array (ME) from the EXOSAT observations of the X-ray burst source Ser X-1 made in 1983 and 1985. From the combined analysis of the spectral and fast variability properties, we show that the source is an atoll source in the banana state during the observations. The per…

2002 • Astronomy and Astrophysics

Exosat 6

The origin of the radio emission from beta Lyrae

DOI: 10.1051/0004-6361:20020878 Bibcode: 2002A&A...391..609U

Umana, G.; Leone, F.; Trigilio, C.

In this paper we present new observational evidence that supports the presence of an extra source of continuum emission in the binary system beta Lyrae. New VLA and IRAM observations, together with published data from the literature and ISO archive data, allow us to build the Spectral Energy Distribution of the binary between 5x…

2002 • Astronomy and Astrophysics

ISO 6

An Introduction to the Design of the Cassini Spacecraft

DOI: 10.1023/A:1023696808894 Bibcode: 2002SSRv..104..129H

Henry, Curt A.

In October of 1997 NASA launched its largest interplanetary spacecraft to date. The Cassini spacecraft will arrive at Saturn in July of 2004 and begin a four year tour of that planetary system. After the spacecraft arrives it will separate into an orbiter and a probe. The Huygens Probe, developed by the European Space Agency, will follow a ballist…

2002 • Space Science Reviews

Huygens 6

Systematic relations between the HIPPARCOS catalogue and major (fundamental) catalogues of the 20th century (Paper II)

DOI: 10.1051/0004-6361:20020428 Bibcode: 2002A&A...387.1123S

Schwan, H.

Presented are the systematic relations between the HIPPARCOS catalogue and major catalogues of the 20th century, not yet treated in Paper I. Colour-dependent errors in the catalogues are also determined and eliminated. The derived systematic relations allow one to reduce observations given in the system of one of the analyzed catalogues to the HIP…

2002 • Astronomy and Astrophysics

Hipparcos 6

Helioseismic limit on heavy element abundance

DOI: 10.1051/0004-6361:20021253 Bibcode: 2002A&A...393L..95A

Antia, H. M.; Chitre, S. M.

Primary inversions of accurately measured solar oscillation frequencies coupled with the equations of thermal equilibrium and other input physics, enable us to infer the temperature and hydrogen abundance profiles inside the Sun. These profiles also help in setting constraints on the input physics as well as on heavy element abundance in the solar…

2002 • Astronomy and Astrophysics

SOHO 6