Search Publications

Large-Scale Variation of Solar Wind Electron Properties from Quasi-Thermal Noise Spectroscopy: Ulysses Measurements

Issautier, K.; Meyer-Vernet, N.; Hoang, S. +1 more

The transport of energy in space plasmas, especially in the solar wind, is far from being understood. Measuring the temperature of the electrons and their non-thermal properties is essential to understand the transport properties in collisionless plasmas. Quasi-thermal noise spectroscopy is a reliable tool for measuring the electron temperature ac…

Multi-spacecraft study of foreshock cavitons upstream of the quasi-parallel bow shock

Kajdič, Primož; Russell, Christopher T.; Blanco-Cano, Xochitl +1 more

In this work we perform the first multi-spacecraft analysis of two foreshock cavitons observed by the Cluster spacecraft. We also study the characteristics of their surrounding regions. Foreshock cavitons are a relatively new type of phenomena in the Earth's foreshock. They appear in regions deep inside the foreshock and are therefore always immer…

The evolution of M 2-9 from 2000 to 2010

Balick, B.; Corradi, R. L. M.; Santander-García, M.

Context. Understanding the formation of collimated outflows is one of the most debated and controversial topics in the study of the late stages of stellar evolution.
Aims: M 2-9 is an outstanding representative of extreme aspherical flows. It presents unique features such as a pair of high-velocity dusty polar blobs and a m…

The role of ULF waves interacting with oxygen ions at the outer ring current during storm times

Zong, Q. -G.; Reme, H.; Korth, A. +5 more

The modulations of the outer ring current O⁺ ion fluxes by ULF Pc5 waves are investigated by multisatellite observations during storm times. The O⁺ ions have energies up to tens of keV. We concentrate on the process in terms of drift-bounce resonance of O⁺ ions with ULF standing waves to understand whether the ring…

The 2XMMi/SDSS Galaxy Cluster Survey. I. The first cluster sample and X-ray luminosity-temperature relation

Takey, A.; Schwope, A.; Lamer, G.

We present a catalogue of X-ray selected galaxy clusters and groups as a first release of the 2XMMi/SDSS Galaxy Cluster Survey. The survey is a search for galaxy clusters detected serendipitously in observations with XMM-Newton in the footprint of the Sloan Digital Sky Survey (SDSS). The main aims of the survey are to identify new X-ray galaxy clu…

Water in low-mass star-forming regions with Herschel (WISH-LM). High-velocity H₂O bullets in L1448-MM observed with HIFI

Liseau, R.; van Dishoeck, E. F.; Bachiller, R. +4 more

Herschel-HIFI observations of water in the low-mass star-forming object L1448-MM, known for its prominent outflow, are presented, as obtained within the "Water in star-forming regions with Herschel" (WISH) key programme. Six H₂¹⁶O lines are targeted and detected (E_up/k_B ~ 50-250 K), as is CO J = 10-9 (E<…

The magnitude difference between the main sequence turn off and the red giant branch bump in Galactic globular clusters

Salaris, M.; Pietrinferni, A.; Monelli, M. +3 more

We present new measurements of the magnitude of the main sequence turn off and the red giant branch bump in the luminosity function of a sample of Galactic globular clusters with updated estimates of [Fe/H] and [α/Fe], employing photometric data collected with the Advanced Camera for Survey onboard the HST. We compare measured and predicted values…

Dynamics and seasonal variations in Saturn's magnetospheric plasma sheet, as measured by Cassini

Coates, A. J.; Krupp, N.; Dougherty, M. K. +6 more

We analyze electron plasma, energetic ion, and magnetic field data from four almost vertical Cassini passes through the nightside plasma sheet of Saturn (segments of the high-latitude orbits of the spacecraft) separated in two subsets: two passes of identical geometry from January 2007 with Cassini crossing the equatorial plane in the postmidnight…

Distribution of HCN in Titan's upper atmosphere from Cassini/VIMS observations at 3 µm

López-Puertas, M.; D'Aversa, E.; García-Comas, M. +5 more

Cassini/VIMS limb observations have been used to retrieve vertical profiles of hydrogen cyanide (HCN) from its 3 µm emission in the region from 600 to 1100 km altitude at daytime. While the daytime emission is large up to about 1100 km, it vanishes at nighttime at very low altitudes, suggesting that the daytime emission originates under non-…

Erratum: "Comprehensive Analysis of Coronal Mass Ejection Mass and Energy Properties Over a Full Solar Cycle" (2010, ApJ, 722, 1522)

Howard, R. A.; Patsourakos, S.; Michalek, G. +3 more