Science Archives Publication System

Mixed particle acceleration at CME-driven shocks and flares

DOI: 10.1029/2004GL021250 Bibcode: 2005GeoRL..32.2101L

Zank, G. P.; Li, G.

A recent study of Cane et al. [2003] showed that in some intense SEP events, the time-intensity profiles exhibit two peaks, with an earlier one having a high Fe/O and a later one with a low Fe/O ratio. They suggested that these two-component events are due to CMEs and their accompanying flares occurring together, with the first peak being flare-re…

2005 • Geophysical Research Letters

SOHO 84

Nightglow in the Upper Atmosphere of Mars and Implications for Atmospheric Transport

DOI: 10.1126/science.1106957 Bibcode: 2005Sci...307..566B

Bertaux, Jean-Loup; Leblanc, François; Perrier, Séverine +8 more

We detected light emissions in the nightside martian atmosphere with the SPICAM (spectroscopy for the investigation of the characteristics of the atmosphere of Mars) ultraviolet (UV) spectrometer on board the Mars Express. The UV spectrum of this nightglow is composed of hydrogen Lyman α emission (121.6 nanometers) and the γ and δ bands of nitric …

2005 • Science

MEx 84

INTEGRAL discovery of persistent hard X-ray emission from the Soft Gamma-ray Repeater SGR 1806-20

DOI: 10.1051/0004-6361:200500088 Bibcode: 2005A&A...433L...9M

Hurley, K.; Götz, D.; Mereghetti, S. +1 more

We report the discovery of persistent hard X-ray emission extending up to 150 keV from the soft gamma-ray repeater SGR 1806-20 using data obtained with the INTEGRAL satellite in 2003-2004. Previous observations of hard X-rays from objects of this class were limited to short duration bursts and rare transient episodes of strongly enhanced luminosit…

2005 • Astronomy and Astrophysics

INTEGRAL 84

Kinematics of Low-z Ultraluminous Infrared Galaxies and Implications for Dynamical Mass Derivations in High-z Star-forming Galaxies

DOI: 10.1086/427683 Bibcode: 2005ApJ...621..725C

Arribas, Santiago; Colina, Luis; Monreal-Ibero, A.

The kinematic properties of the gaseous and stellar components of 11 ultraluminous infrared galaxies (ULIRGs; 14 nuclei) are investigated by means of integral field spectroscopy (IFS) with the INTEGRAL system and available IR and CO millimeter spectroscopy. The sample of ULIRGs cover different phases of the merging process and span all levels of a…

2005 • The Astrophysical Journal

eHST 84

A Chandra X-ray survey of nearby dwarf starburst galaxies - II. Starburst properties and outflows

DOI: 10.1111/j.1365-2966.2005.08863.x Bibcode: 2005MNRAS.358.1453O

Ott, Jürgen; Walter, Fabian; Brinks, Elias

We present a comprehensive comparison of the X-ray properties of a sample of eight dwarf starburst galaxies observed with Chandra (IZw18, VIIZw403, NGC1569, NGC3077, NGC4214, NGC4449, NGC5253 and He2-10). In PaperI, we presented in detail the data reduction and analysis of the individual galaxies. For the unresolved X-ray sources, we find the foll…

2005 • Monthly Notices of the Royal Astronomical Society

eHST 84

X-ray reflection in the Seyfert galaxy 1H 0419-577 revealing strong relativistic effects in the vicinity of a Kerr black hole

DOI: 10.1111/j.1365-2966.2005.09148.x Bibcode: 2005MNRAS.361..795F

Iwasawa, K.; Fabian, A. C.; Miniutti, G. +1 more

We report results obtained from six XMM-Newton observations of the Seyfert galaxy 1H 0419-577. The source was observed in a wide range of different flux levels, allowing its long-term spectral variability to be studied in detail, as already reported recently by Pounds et al. Here we show that the X-ray spectrum is well described by a simple two-co…

2005 • Monthly Notices of the Royal Astronomical Society

XMM-Newton 84

Hubble Space Telescope spectroscopy of the Balmer lines in Sirius B^*

DOI: 10.1111/j.1365-2966.2005.09359.x Bibcode: 2005MNRAS.362.1134B

Bond, Howard E.; Barstow, M. A.; Koester, D. +3 more

Sirius B is the nearest and brightest of all white dwarfs, but it is very difficult to observe at visible wavelengths due to the overwhelming scattered light contribution from Sirius A. However, from space we can take advantage of the superb spatial resolution of the Hubble Space Telescope (HST) to resolve the A and B components. Since the closest…

2005 • Monthly Notices of the Royal Astronomical Society

Hipparcos eHST 83

Predicting QSO Continua in the Lyα Forest

DOI: 10.1086/426062 Bibcode: 2005ApJ...618..592S

O'Meara, John M.; Tytler, David; Lubin, Dan +2 more

We present a method to make predictions with sets of correlated data values, in this case QSO flux spectra. We predict the continuum in the Lyα forest of a QSO, from 1020 to 1216 Å, using the spectrum of that QSO from 1216 to 1600 Å. We find correlations between the unabsorbed flux in these two wavelength regions in the Hubble Space Telescope (HST…

2005 • The Astrophysical Journal

eHST 83

Integrated spectrum of the planetary nebula NGC 7027

DOI: 10.1051/0004-6361:20052869 Bibcode: 2005A&A...442..249Z

Barlow, M. J.; Zhang, Y.; Liu, X. -W. +2 more

We present deep optical spectra of the archetypal young planetary nebula (PN) NGC 7027, covering a wavelength range from 3310 to 9160 Å. The observations were carried out by uniformly scanning a long slit across the entire nebular surface, thus yielding average optical spectra for the whole nebula. A total of 937 emission featur…

2005 • Astronomy and Astrophysics

ISO IUE 83

Automated Detection Of Eit Waves And Dimmings

DOI: 10.1007/s11207-005-5373-z Bibcode: 2005SoPh..228..265P

Berghmans, David; Podladchikova, Olena

Studies of the onset of Earth-directed coronal mass ejections (CMEs) rely on solar disk observations where CME structures are difficult to disentangle because of the diversity and transient character of the phenomena involved. Dimmings and coronal waves are among the best evidence of the large-scale reorganization of coronal magnetic fields associ…

2005 • Solar Physics

SOHO 83