Science Archives Publication System

Cassini observations of Io's visible aurorae

DOI: 10.1016/j.icarus.2004.01.008 Bibcode: 2004Icar..172..127G

Geissler, Paul; McEwen, Alfred; Porco, Carolyn +4 more

More than 500 images of Io in eclipse were acquired by the Cassini spacecraft in late 2000 and early 2001 as it passed through the jovian system en route to Saturn (Porco et al., 2003, Science 299, 1541-1547). Io's bright equatorial glows were detected in Cassini's near-ultraviolet filters, supporting the interpretation that the visible emissions …

2004 • Icarus

Cassini 52

Synoptic study of the SMC SNRs using XMM-Newton

DOI: 10.1051/0004-6361:20034156 Bibcode: 2004A&A...421.1031V

Kaastra, J. S.; Bleeker, J. A. M.; van der Heyden, K. J.

We present a detailed X-ray spectral analysis of 13 supernova remnants (SNR) in the Small Magellanic Cloud (SMC). We apply both single-temperature non-equilibrium ionisation models and models based on the Sedov similarity solution, where applicable. We also present detailed X-ray images of individual SNRs, which reveal a range of different morphol…

2004 • Astronomy and Astrophysics

XMM-Newton 52

Electric field scales at quasi-perpendicular shocks

DOI: 10.5194/angeo-22-2291-2004 Bibcode: 2004AnGeo..22.2291W

André, M.; Horbury, T.; Balikhin, M. +2 more

Available from http://www.copernicus.org/site/EGU/annales/22/7/2291.htm?FrameEngine=false;

2004 • Annales Geophysicae

Cluster 51

Ion winds in Saturn's southern auroral/polar region

DOI: 10.1016/j.icarus.2003.09.006 Bibcode: 2004Icar..167..204S

Stallard, Tom S.; Miller, Steve; Geballe, Thomas R. +2 more

We present profiles of the line-of-sight (l.o.s.) ionospheric wind velocities in the southern auroral/polar region of Saturn. Our velocities are derived from the measurement of Doppler shifting of the H ₃⁺ν₂Q(1,0 ^-) line at 3.953 microns. The data for this study were obtained using the facility high-reso…

2004 • Icarus

Cassini 51

The nature of a gravitationally lensed submillimetre arc in MS0451.6-0305: two interacting galaxies at z~ 2.9?

DOI: 10.1111/j.1365-2966.2004.07982.x Bibcode: 2004MNRAS.352..759B

Donahue, Megan; Smith, Graham P.; Kneib, Jean-Paul +6 more

We present a new SCUBA image of the cluster MS 0451.6-0305, which exhibits strong, extended submillimetre flux at 850 µm. The most striking feature in the map is an elongated region of bright submillimetre emission, with a flux density of ~10 mJy over several beam sizes. This region is apparently coincident with a previously known optical ar…

2004 • Monthly Notices of the Royal Astronomical Society

eHST 51

Rosetta target comet 67P/Churyumov-Gerasimenko. Postperihelion gas and dust production rates

DOI: 10.1051/0004-6361:20040190 Bibcode: 2004A&A...422L..19S

Schulz, R.; Boehnhardt, H.; Stüwe, J. A.

The evolution of the activity and composition of the coma of ROSETTA target comet 67P/Churyumov-Gerasimenko was studied along its postperihelion orbit from 2.29 AU to 3.22 AU. The comet had a major drop of activity between 2.5 AU and 2.9 AU, which manifested most obviously in its light curve (the brightness decreased by 3 mag), but is also confirm…

2004 • Astronomy and Astrophysics

Rosetta 51

RHESSI e⁺-e^- Annihilation Radiation Observations: Implications for Conditions in the Flaring Solar Chromosphere

DOI: 10.1086/426478 Bibcode: 2004ApJ...615L.169S

Smith, David M.; Lin, Robert P.; Share, Gerald H. +2 more

RHESSI has measured the positron-electron annihilation line and continuum in three solar flares: 2002 July 23, 2003 October 28, and 2003 November 2. The 511 keV line was broad (~4-8 keV) in all three flares, consistent with annihilations in an ambient ionized medium at temperatures above 10⁵ K. The measured continuum from positronium an…

2004 • The Astrophysical Journal

INTEGRAL 51

XMM-Newton observations of Sagittarius A East

DOI: 10.1111/j.1365-2966.2004.07571.x Bibcode: 2004MNRAS.350..129S

Decourchelle, A.; Warwick, R. S.; Predehl, P. +1 more

We present an analysis of a recent XMM-Newton observation of Sgr A East, a supernova remnant located close to the Galactic Centre. Very high-quality X-ray spectra reveal many emission lines from highly ionized atoms consistent with a multitemperature thin thermal plasma in ionization equilibrium. We use a two-temperature model to fit the spectra a…

2004 • Monthly Notices of the Royal Astronomical Society

XMM-Newton 51

Speckle interferometry of nearby multiple stars. II.

DOI: 10.1051/0004-6361:20035705 Bibcode: 2004A&A...422..627B

Weigelt, G.; Schertl, D.; Balega, Y. Y. +4 more

This paper is a continuation of diffraction-limited speckle interferometry of binary and multiple stars carried out at the 6-m telescope of the Special Astrophysical Observatory in Zelenchuk. The program has concentrated on nearby (π>10 mas) close binaries discovered or measured during the Hipparcos mission. Here, we present 132 measurements of…

2004 • Astronomy and Astrophysics

Hipparcos 51

Cluster observations of finite amplitude Alfvén waves and small-scale magnetic filaments downstream of a quasi-perpendicular shock

DOI: 10.1029/2003JA010056 Bibcode: 2004JGRA..109.5207A

Fazakerley, A. N.; Maksimovic, M.; Alexandrova, O. +7 more

The Cluster satellites crossed the Earth's bow shock several times on 31 March 2001. For all these crossings the bow shock was supercritical and quasi-perpendicular. We present here the results of a detailed analysis of the magnetic field fluctuations observed downstream of the shock. We use data from the four Cluster spacecraft to determine the b…

2004 • Journal of Geophysical Research (Space Physics)

Cluster 51