Science Archives Publication System

The evolution and simulation of the outburst from XZ Tauri - A possible EXor?

DOI: 10.1051/0004-6361:20034316 Bibcode: 2004A&A...419..593C

Ray, T. P.; Coffey, D.; Downes, T. P.

We report on multi-epoch HST/WFPC2 images of the XZ Tauri binary, and its outflow, covering the period from 1995 to 2001. Data from 1995 to 1998 have already been published in the literature. Additional images, from 1999, 2000 and 2001 are presented here. These reveal not only further dynamical and morphological evolution of the XZ Tauri outflow b…

2004 • Astronomy and Astrophysics

eHST 22

Two examples of magnetic clouds with double rotations observed by the Ulysses spacecraft

DOI: 10.1029/2003GL018330 Bibcode: 2004GeoRL..31.6804R

Forsyth, R. J.; Rees, A.

A survey of Ulysses magnetometer data has been carried out between Oct 1990 (launch) and Apr 2003 (just after the second northern polar pass) cataloguing magnetic cloud (MC) signatures, i.e., a smooth magnetic field rotation and enhanced magnetic field magnitude. After confirming that each of these events was a true MC by checking for a low proton…

2004 • Geophysical Research Letters

Ulysses 22

Cluster observations of high-frequency waves in the exterior cusp

DOI: 10.5194/angeo-22-2403-2004 Bibcode: 2004AnGeo..22.2403K

Lavraud, B.; André, M.; Buchert, S. +6 more

Available from http://www.copernicus.org/site/EGU/annales/22/7/2403.htm?FrameEngine=false;

2004 • Annales Geophysicae

Cluster 22

Molecular Hydrogen Emission Lines in Far Ultraviolet Spectroscopic Explorer Observations of Mira B

DOI: 10.1086/380197 Bibcode: 2004ApJ...601..502W

Wood, Brian E.; Karovska, Margarita

We present new Far Ultraviolet Spectroscopic Explorer (FUSE) observations of Mira A's wind-accreting companion star, Mira B. We find that the strongest lines in the FUSE spectrum are H₂ lines fluoresced by H I Lyα. A previously analyzed Hubble Space Telescope (HST) spectrum also shows numerous Lyα-fluoresced H₂ lines. The HST…

2004 • The Astrophysical Journal

IUE eHST 22

Evolution of morphological features of CMEs deduced from catastrophe model of solar eruptions

DOI: 10.1016/j.newast.2004.04.004 Bibcode: 2004NewA....9..611L

Lin, J.; Soon, W.

We describe the evolution of morphological features of the magnetic configuration of CME according to the catastrophe model developed previously. For the parameters chosen for the present work, roughly half of the total mass is nominally contained in the initial flux rope, while the remaining plasma is brought by magnetic reconnection from the cor…

2004 • New Astronomy

SOHO 22

X-ray sources and their optical counterparts in the globular cluster M 22

DOI: 10.1051/0004-6361:20040399 Bibcode: 2004A&A...424..133W

Rizzi, L.; Webb, N. A.; Barret, D. +3 more

Using XMM-Newton EPIC imaging data, we have detected 50 low-luminosity X-ray sources in the field of view of M 22, where 5±3 of these sources are likely to be related to the cluster. Using differential optical photometry, we have identified probable counterparts to those sources belonging to the cluster. Using X-ray spectroscopic and timing studie…

2004 • Astronomy and Astrophysics

XMM-Newton 22

Observational evidence for velocity convergence toward magnetic neutral lines as a factor in CME initiation

DOI: 10.1016/j.jastp.2004.03.017 Bibcode: 2004JASTP..66.1271L

Luhmann, Janet; Li, Yan; Fisher, George +1 more

One of the major challenges of space weather research and modeling is the identification of the mechanism(s) for coronal mass ejections (CMEs). A leading candidate tested in several recent numerical simulations is photospheric magnetic flux cancellation by velocity convergence toward the neutral line of an active region having sheared or twisted m…

2004 • Journal of Atmospheric and Solar-Terrestrial Physics

SOHO 22

Active Region Streamer Diagnostics 2001 September 14-16

DOI: 10.1086/381525 Bibcode: 2004ApJ...603..760U

Raymond, J. C.; Uzzo, M.; Ko, Y. -K.

From 2001 September 14 to 16 the Ultraviolet Coronal Spectrometer aboard the Solar and Heliospheric Observatory conducted a series of observations designed to study the absolute elemental abundances of an active region streamer. The absolute elemental abundances for O, Si, Fe, Mg, N, S, and Ar were calculated utilizing a constant electron temperat…

2004 • The Astrophysical Journal

SOHO 22

Modeling the Continuum Emission from the Circumstellar Environment of Herbig Ae/Be Stars

DOI: 10.1086/380604 Bibcode: 2004ApJ...601.1000E

Elia, D.; Pezzuto, S.; Lorenzetti, D. +4 more

This paper discusses a model for the continuum emission of the Herbig Ae/Be stars in the light of an updated set of observational data spanning 5 orders of magnitude in wavelength and including the low-resolution spectra obtained with the Short Wavelength Spectrometer and Long Wavelength Spectrometer on board the Infrared Space Observatory (ISO). …

2004 • The Astrophysical Journal

ISO 22

Multifractal structure of turbulence in the magnetospheric cusp

DOI: 10.5194/angeo-22-2431-2004 Bibcode: 2004AnGeo..22.2431Y

Popielawska, B.; Stasiewicz, K.; Grzesiak, M. +2 more

Available from http://www.copernicus.org/site/EGU/annales/22/7/2431.htm?FrameEngine=false;

2004 • Annales Geophysicae

Cluster 21