Search Publications
Direct wind measurements from November 2007 in Venus' upper atmosphere using ground-based heterodyne spectroscopy of CO 2 at 10 µm wavelength
Sornig, M.; Sonnabend, G.; Kroetz, P. +2 more
Between November 23 and 28, 2007, the Cologne Tuneable Heterodyne Infrared Spectrometer THIS was installed at the McMath-Pierce Solar Telescope (Kitt Peak, Arizona, USA) to determine zonal wind velocities and to estimate the subsolar-to-antisolar flow. We investigate dynamics in the upper atmosphere of Venus by measuring the Doppler shift of fully…
Transiting exoplanets from the CoRoT space mission . XIX. CoRoT-23b: a dense hot Jupiter on an eccentric orbit
Mazeh, T.; Aigrain, S.; Alonso, R. +40 more
We report the detection of CoRoT-23b, a hot Jupiter transiting in front of its host star with a period of 3.6314 ± 0.0001 days. This planet was discovered thanks to photometric data secured with the CoRoT satellite, combined with spectroscopic radial velocity (RV) measurements. A photometric search for possible background eclipsing binaries conduc…
A Strongly Lensed Massive Ultracompact Quiescent Galaxy at z ~ 2.4 in the COSMOS/UltraVISTA Field
Franx, Marijn; Muzzin, Adam; Labbé, Ivo +14 more
We report the discovery of a massive ultracompact quiescent galaxy that has been strongly lensed into multiple images by a foreground galaxy at z = 0.960. This system was serendipitously discovered as a set of extremely Ks -bright high-redshift galaxies with red J - Ks colors using new data from the UltraVISTA YJHKs
Statistical model of electron pitch angle diffusion in the outer radiation belt
Krasnoselskikh, V.; Breuillard, H.; Agapitov, O. +2 more
We calculated the bounce averaged electron pitch angle diffusion coefficients ? using the statistical characteristics of lower band chorus activity collected by the Cluster mission from 2001-2009. Nine years of Cluster observations provide the distributions of the θ angle between wave vectors and the background magnetic field; and the distribution…
The X-ray warm absorber and nuclear obscuration in the Seyfert 1.8 galaxy ESO 113-G010
Mehdipour, M.; Page, M. J.; Branduardi-Raymont, G.
We present the first analysis of the X-ray warm absorber and nuclear obscuration in the Seyfert 1.8 galaxy
Post-flare Ultraviolet Light Curves Explained with Thermal Instability of Loop Plasma
Orlando, S.; Reale, F.; Landi, E.
In the present work, we study the C8 flare that occurred on 2000 September 26 at 19:49 UT and observed by the Solar and Heliospheric Observatory/Solar Ultraviolet Measurement of Emitted Radiation spectrometer from the beginning of the impulsive phase to well beyond the disappearance in the X-rays. The emission first decayed progressively through e…
Uncovering the magnetic environment of our solar system
Ben-Jaffel, L.; Ratkiewicz, R.
Since its formation 4.6 billion years ago, our solar system has most likely crossed numerous magnetized interstellar clouds and bubbles of different sizes and contents on its path through the Milky Way. Having a reference model for how the heliosphere and interstellar winds interact is critical for understanding our current Galactic environment, a…
The Evolution of Plasma Parameters on a Coronal Source Surface at 2.3 R ⊙ during Solar Minimum
Lamy, P.; Strachan, L.; Kohl, J. L. +1 more
We analyze data from the Solar and Heliospheric Observatory to produce global maps of coronal outflow velocities and densities in the regions where the solar wind is undergoing acceleration. The maps use UV and white light coronal data obtained from the Ultraviolet Coronagraph Spectrometer and the Large Angle Spectroscopic Coronagraph, respectivel…
Hydride spectroscopy of the diffuse interstellar medium: new clues on the gas fraction in molecular form and cosmic ray ionization rate in relation to HFormula
Menten, K. M.; Falgarone, E.; Levrier, F. +13 more
Mimas' far-UV albedo: Spatial variations
Johnson, Robert E.; Buratti, Bonnie J.; Hendrix, Amanda R. +7 more
We present Cassini Ultraviolet Imaging Spectrograph (UVIS) observations of Mimas at far-ultraviolet wavelengths (170-190 nm) which show an interesting albedo gradient across the anti-saturnian hemisphere. We discuss the photometric behavior of Mimas in the far-UV and review the important exogenic processes and their expected effects, relevant over…