Science Archives Publication System

New features of electron diffusion regions observed at subsolar magnetic field reconnection sites

DOI: 10.1029/2005GL024092 Bibcode: 2005GeoRL..3224102M

Bale, S. D.; Torbert, R. B.; McFadden, J. P. +1 more

Nineteen electron diffusion regions at magnetic field reconnection sites have been found in one hour of Cluster satellite data near the subsolar magnetopause. Investigations on previously unachieved spatial and temporal scales show the following for the first time: direct conversion of magnetic energy to electron energy (The resulting accelerated …

2005 • Geophysical Research Letters

Cluster 33

Multispacecraft observations of the hard X-ray emission from the giant solar flare on 2003 November 4

DOI: 10.1051/0004-6361:20041875 Bibcode: 2005A&A...433.1133K

Hurley, K.; Kane, S. R.; McTiernan, J. M.

The hard X-ray emission from the “giant” solar flare on 4 November 2003 ( 1947 UT) was observed by the hard X-ray/gamma ray spectrometer on the Ulysses spacecraft located at 114 degrees west of the Sun-Earth line at a distance of 5.28 AU from the Sun. A “small” hard X-ray burst during the early rise of the giant flare and a part of the decay of th…

2005 • Astronomy and Astrophysics

Ulysses 33

Imaging Saturn's rings with CAMIRAS: thermal inertia of B and C rings

DOI: 10.1051/0004-6361:20053100 Bibcode: 2005A&A...441..379F

Pantin, E.; Lagage, P. O.; Ferrari, C. +2 more

Thermal inertias Γ of Saturn's B and C ring particles have been derived from infrared observations using the CAMIRAS camera mounted on the Canada-France-Hawaii Telescope. They are respectively Γ_B=5⁺¹⁸_-2 {J m^-2 K^-1 s^-1/2} and Γ_C=6⁺¹²_-4 {J m^-2 K^-1 s<…

2005 • Astronomy and Astrophysics

Cassini 33

Jet-Gas Interaction in Markarian 78. II. Ionization Mechanisms

DOI: 10.1086/426562 Bibcode: 2005AJ....129..104W

Silverman, J. D.; Wilson, A. S.; Rosario, D. J. +2 more

We investigate the ionization mechanisms in the Seyfert galaxy Markarian 78, chosen because its narrow-line region (NLR) is dominated by a strong jet-gas interaction. Our principal aim is to ascertain whether or not shock-related ionization is important. We use Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph (STIS) optical and UV…

2005 • The Astronomical Journal

eHST 33

Dissecting the spiral galaxy M 83: mid-infrared emission and comparison with other tracers of star formation

DOI: 10.1051/0004-6361:20042342 Bibcode: 2005A&A...441..491V

Madden, S. C.; Sauvage, M.; Ehle, M. +4 more

We present a detailed mid-infrared study of the nearby, face-on spiral galaxy M 83 based on ISOCAM data. M 83 is a unique case study, since a wide variety of MIR broad-band filters as well as spectra, covering the wavelength range of 4 to 18 µm, were observed and are presented here. Emission maxima trace the nuclear and bulge area, star-form…

2005 • Astronomy and Astrophysics

ISO 33

Far-infrared detection of methylene

DOI: 10.1051/0004-6361:20041598 Bibcode: 2005A&A...431..203P

Menten, K. M.; Baluteau, J. -P.; Polehampton, E. T. +2 more

We present a clear detection of CH₂ in absorption towards the molecular cloud complexes Sagittarius B2 and W49 N using the ISO Long Wavelength Spectrometer. These observations represent the first detection of its low excitation rotational lines in the interstellar medium. Towards Sagittarius B2, we …

2005 • Astronomy and Astrophysics

ISO 33

Global characteristics of the first IBIS/ISGRI catalogue sources: unveiling a murky episode of binary star evolution

DOI: 10.1051/0004-6361:20053513 Bibcode: 2005A&A...443..485D

Hill, A. B.; Walter, R.; Bird, A. J. +10 more

INTEGRAL is the first gamma-ray astronomy mission with a sufficient sensitivity and angular resolution combination appropriate to the detection and identification of considerable numbers of gamma-ray emitting sources. The large field of view (~30° zero response FWHM) enables INTEGRAL to survey the galactic plane on a regular (~weekly) basis as par…

2005 • Astronomy and Astrophysics

INTEGRAL 33

Globular clusters in NGC 4365: new K-band imaging and a reassessment of the case for intermediate-age clusters

DOI: 10.1051/0004-6361:20053379 Bibcode: 2005A&A...443..413L

Larsen, S. S.; Strader, J.; Brodie, J. P.

We study the globular cluster (GC) system of the Virgo giant elliptical galaxy NGC 4365, using new wide-field K-band imaging from the ESO 3.5 m New Technology Telescope, archive V and I imaging from FORS1 on the ESO VLT and HST/WFPC2+ACS data. As in most other large ellipticals, the GC colour distribution has (at least) two peak…

2005 • Astronomy and Astrophysics

eHST 33

Luminous X-Ray Flares from Low-Mass X-Ray Binary Candidates in the Early-Type Galaxy NGC 4697

DOI: 10.1086/430374 Bibcode: 2005ApJ...624L..17S

Sarazin, Craig L.; Jordán, Andrés; Sivakoff, Gregory R.

We report results of the first search specifically targeting short-timescale X-ray flares from low-mass X-ray binaries in an early-type galaxy. A new method for flare detection is presented. In NGC 4697, the nearest, optically luminous, X-ray-faint elliptical galaxy, three out of 157 sources are found to display flares at >99.95% probability, a…

2005 • The Astrophysical Journal

eHST 33

Variation in the Scattering Shroud Surrounding Markarian 231

DOI: 10.1086/449305 Bibcode: 2005ApJ...633...71G

Brandt, W. N.; Chartas, G.; Gallagher, S. C. +5 more

We present a detailed study of the nuclear structure of the highly polarized broad absorption line quasar, Mrk 231, through a multiwavelength campaign of Chandra observations, optical spectroscopy, optical spectropolarimetry, and imaging polarimetry. This campaign was designed to extend the 40 ks Chandra study of Gallagher and coworkers and the op…

2005 • The Astrophysical Journal

XMM-Newton eHST 33