Search Publications
Renewed acceleration of the 24° N jet on Jupiter
Rogers, John H.; Mettig, Hans-Jörg; Peach, Damian
Jupiter's eastward jet at 24° N, which formerly had the fastest winds on the planet, has maintained a less extreme speed of ∼135 m/s since 1991, carrying a series of long-lived vortices at 125 m/s. In 2002-2003, as the albedo of the adjacent North Temperate Belt increased, the tracks of the vortices accelerated slightly, and they had disappeared b…
Far ultraviolet spectroscopy of (non-magnetic) cataclysmic variables
Long, Knox S.
HST and FUSE have provided high signal-to-noise, high-resolution spectra of a variety of cataclysmic variables and have allowed a detailed characterization of FUV emission sources in both high and low states. Here, I describe how this has advanced our understanding of non-magnetic CVs. In the high state, the FUV spectra are dominated by disk emiss…
Exploration of Mars in the SPICAM-IR experiment onboard the Mars-Express spacecraft: 2. Nadir observations: Simultaneous observations of water vapor and O2 glow in the Martian atmosphere
Bertaux, J. -L.; Fedorova, A. A.; Korablev, O. I. +4 more
The SPICAM experiment onboard the Mars-Express spacecraft includes sounding the Martian atmosphere in the ultra-violet (118 320 nm) and near IR (1 1.7 µm) ranges. The infrared spectrometer operates in the range of 1 1.7 µm with a resolution of 3.5 cm-1 in the mode of nadir observations and solar and stellar occulations. This…
The High Latitude Boundaries Under Extreme Solar Wind Conditions: a Cluster Perspective
Zhang, H.; Zong, Q. -G.; Daly, P. W. +1 more
The high latitude boundaries include boundary between the magnetosheath and cusp, the boundary between the magnetosheath and the High Latitude Trapping Region (HLTR) which is the closed field line region on the day-side in the high latitude region, the boundary between cusp and HLTR and the boundary between mantle and cusp. The properties of the h…
Constraints on the late X-ray radiation from the low-energy gamma-ray burst of December 3, 2003: INTEGRAL data
Sunyaev, R. A.; Sazonov, S. Yu.; Lutovinov, A. A. +1 more
Comparison of the INTEGRAL upper limits on the hard X-ray flux before and after the low-energy GRB 031203 with the XMM measurements of the dust-scattered radiation at lower energies suggests that a significant fraction of the total burst energy could be released in the form of soft X-ray radiation at an early afterglow stage with a characteristic …
The broad iron line physics: summary and outlook
Tanaka, Y.
A brief overview of the ESAC/XMM-Newton Science Operations Centre Workshop on ``Variable and Broad Iron Lines around Black Holes" is presented. Following the relativistic disk-line theory of accreting black holes, ASCA discovered such broad iron lines from several AGN. XMM-Newton and Chandra confirmed the ASCA results, but also found more complexi…
Hosts of type II quasars: An HST study
Krolik, J. H.; Schneider, D. P.; Heckman, T. M. +6 more
Type II quasars are luminous Active Galactic Nuclei whose centers are obscured by large amounts of gas and dust. In this contribution we present 3-band HST images of nine type II quasars with redshifts 0.25 < z < 0.4 selected from the Sloan Digital Sky Survey based on their emission line properties. The intrinsic luminosities of these quasar…
Plasma mixing as a cause of solar wind magnetic field variations
Balogh, A.; Facskó, G.; Erdős, G. +1 more
In the present paper, we have studied the effect of plasma mixing on the small-scale field configurations. We have employed theoretical models and numerical simulations to describe magnetic field structures formed by the mixing motion of the interplanetary plasma. The small-scale magnetic fluctuations share properties with waves and with turbulenc…
Origin of the shrapnels around the Vela SNR
Katsuda, Satoru; Tsunemi, Hiroshi
There are several shrapnels around the Vela SNR that originated from the inner layer of the progenitor star. We present here the analysis of the X-ray spectrum of the Vela shrapnel A with XMM-Newton satellite. The Vela shrapnel A is one of several protrusions identified as bullets from Vela supernova explosion. We confirmed that there was a promin…
A View to the Future: Ultraviolet Studies of the Solar System
Gérard, Jean-Claude; Brosch, Noah; Festou, Michel C. +1 more
We discuss the status of ultraviolet knowledge of Solar System objects. We begin with a short historical survey, followed by a review of knowledge gathered so far and of existing observational assets. The survey indicates that UV observations, along with data collected in other spectral bands, are necessary and in some cases essential to understan…