Search Publications
Comprehensive survey of Pc4 and Pc5 band spectral content in Cluster magnetic field data
Yeoman, T. K.; Clausen, L. B. N.
In the first part of this study we present two case studies of pulsations that, with the help of ground-based data, are identified as field line resonances (FLRs). These pulsations occurred at frequencies which belong to a set of frequencies that has been suggested to be preferred in the terrestrial magnetosphere (CMS frequencies). We go on to sho…
Morphological and dynamical properties of small-scale chromospheric features deduced from IBIS observations
Romano, P.; Spadaro, D.; Contarino, L. +2 more
Context: In the past, chromospheric features were mostly studied by analyzing observations performed along the Hα profile, but several aspects related to their formation and dynamics remained uncertain and poorly understood. Recently, new investigations have been carried out using data obtained along the Ca II line at 854.21 nm, providing new inpu…
Solar proton enhancements in different energy channels and coronal mass ejections during the last solar cycle
Mavromichalaki, H.; Belov, A.; Gerontidou, M. +1 more
The main properties of 11622 coronal mass ejections (CMEs) observed by the Solar and Heliospheric Observatory (SOHO) mission’s Large Angle and Spectrometric Coronagraph (LASCO-C2) from January 1996 through December 2006 are considered. Moreover, the extended database of solar proton enhancements (SPEs) with proton flux >0.1 pfu at energy >10…
Cluster view of the plasma sheet boundary layer and bursty bulk flow connection
Kistler, L. M.; Rème, H.; Lennartsson, O. W.
The high-latitude boundaries of the plasma sheet (PSBL) are dynamic latitude zones of recurring and transient (minutes to tens of minutes) earthward and magnetic field-aligned bursts of plasma, each being more or less confined in longitude as well, whose ionic component is dominated by protons with flux, energies and density that are consistent wi…
The physical conditions in Gomez's Hamburger (IRAS 18059-3211), a pre-MS rotating disk
Bujarrabal, V.; Young, K.; Castro-Carrizo, A.
Aims: We aim to study the structure, dynamics, and physical conditions of Gomez's Hamburger (IRAS 18059-3211; GoHam), and in particular confirm that GoHam mainly consists of a flaring disk in Keplerian rotation around a young, probably pre-MS star.
Methods: We present high resolution SMA maps of 12CO J = 2-1, 13CO J = 2-1…
Kinetic thin current sheets: their formation in relation to magnetotail mesoscale turbulent dynamics
Domrin, V. I.; Kropotkin, A. P.
Dynamics of the magnetotail plasma sheet (PS) features nonlinear structures on two totally different scales. There are very thin current sheets (CS) on kinetic scale of the ion gyroradius. And there are intense plasma flow and magnetic field variations on mesoscales (a few earth radii); those are interpreted as mostly 2-D MHD turbulence. On the ot…
Comment on “Evidence of electrical activity on Titan drawn from the Schumann resonances sent by Huygens probe” by J.A. Morente, J.A. Portí, A. Salinas, E.A. Navarro [2008, Icarus, 195, 802-811]
Berthelier, J. J.; López-Moreno, J. J.; Hamelin, M. +4 more
Morente et al. [Morente, J.A., Portí, J.A., Salinas, A., Navarro, E.A., 2008. Icarus. doi:10.1016/j.icarus.2008.02.004] have recently presented a new analysis of the Permittivity, Wave and Altimetry (PWA) measurements made during the descent of the Huygens Probe through the atmosphere of Titan. They claimed the identification of several Schumann r…
Appearance of Saturn’s F ring azimuthal channels for the anti-alignment configuration between the ring and Prometheus
Chavez, Carlos E.
In this article we explore the aspect of the F ring with respect to the anti-alignment configuration between the ring and Prometheus. We focus our attention on the shape of the F ring's azimuthal channels which were first reported by Porco et al. (Porco, C.C., Baker, E., Barbara, J., Beurle, K., Brahic, A., Burns, J.A., Charnoz, S., Cooper, N., Da…
Improved Photometric Redshifts with Surface Luminosity Priors
Hathi, Nimish P.; Pirzkal, Nor; Cohen, Seth +6 more
We apply Bayesian statistics with prior probabilities of galaxy surface luminosity (SL) to improve photometric redshifts. We apply the method to a sample of 1266 galaxies with spectroscopic redshifts in the GOODS North and South fields at 0.1 lsim z lsim 2.0. We start with spectrophotometric redshifts (SPZs) based on Probing Evolution and Reioniza…
X-ray and UV observations of nova V598 Puppis between 147 and 255 days after outburst
Read, A. M.; Ness, J. -U.; Osborne, J. P. +6 more
Aims: The launch of Swift has allowed many more novae to be observed regularly over the X-ray band. Such X-ray observations of novae can reveal ejecta shocks and the nuclear burning white dwarf, allowing estimates to be made of the ejecta velocity.
Methods: We analyse XMM-Newton and Swift X-ray and UV observations of the nova V598 Pup, which w…