Search Publications
Low frequency wave sources in the outer magnetosphere, magnetosheath, and near Earth solar wind
Fränz, M.; Glassmeier, K. -H.; Décréau, P. M. E. +2 more
The interaction of the solar wind with the Earth magnetosphere generates a broad variety of plasma waves through different mechanisms. The four Cluster spacecraft allow one to determine the regions where these waves are generated and their propagation directions. One of the tools which takes full advantage of the multi-point capabilities of the Cl…
236 Minima Timings of Eclipsing Binaries Observed by Integral OMC
Sobotka, P.
236 times of minima of 97 eclipsing binaries observed by ESA INTEGRAL OMC are presented.
Prominences on the Limb: Diagnostics with UV EUV Lines and the Soft X-Ray Continuum
Heinzel, P.; Anzer, U.; Fárnik, F.
In this paper we discuss the two mechanisms by which solar prominences on the limb can manifest themselves when observed in coronal UV - EUV lines and in the soft X-ray continuum. These mechanisms are the absorption in the resonance continua of hydrogen and helium on one hand and the reduction of the emissivity in a part of the coronal volume occu…
Isophotal Structure and Dust Distribution in Radio-loud Elliptical Galaxies
Macchetto, F. D.; Capetti, A.; Sparks, W. B. +4 more
We investigate isophotal properties and dust morphology in the nuclear regions of 84 radio galaxies, imaged in the optical and near-infrared as part of Hubble Space Telescope snapshot surveys. We present a sample-wide trend between host galaxy isophotal structure and the inclination of dusty circumnuclear disks at the centers of 13 of these object…
Cold-climate modification of Martian landscapes: A case study of a spatulate debris landform in the Hellas Montes Region, Mars
Neukum, G.; Hauber, E.; van Gasselt, S.
We use spaceborne image and topographic data of Mars for a geomorphological study of the origin, development, and postemplacement modification of a 30-km-long spatulate landform in the Hellas Montes area, east of Hellas Planitia. The area is characterized by an abundance of lobate debris aprons, all of which have been interpreted as a result of cr…
SuperWASP-North extrasolar planet candidates between 3h < RA < 6h
Hodgkin, S. T.; Lister, T. A.; Christian, D. J. +21 more
The Wide Angle Search for Planets (WASP) photometrically surveys a large number of nearby stars to uncover candidate extrasolar planet systems by virtue of small-amplitude light curve dips on a <~5-d time-scale typical of the `Hot-Jupiters'. Observations with the SuperWASP-North instrument between 2004 April and September produced a rich photom…
From Gigahertz to Millihertz: A Multiwavelength Study of the Acoustically Active 14 August 2004 M7.4 Solar Flare
Moradi, H.; Cally, P. S.; Lindsey, C. +3 more
We carried out an electromagnetic acoustic analysis of the solar flare of 14 August 2004 in active region AR10656 from the radio to the hard X-ray spectrum. The flare was a GOES soft X-ray class M7.4 and produced a detectable sun quake, confirming earlier inferences that relatively low energy flares may be able to generate sun quakes. We introduce…
Radio and White-Light Coronal Signatures Associated with the RHESSI Hard X-Ray Event of 2002 July 23
Krucker, S.; Kaiser, M. L.; Gary, D. E. +3 more
Simultaneous radio, white-light, and hard X-ray (HXR) observations for the 2002 July 23 γ-ray flare event are used to establish the relationship of a complex type III-like burst to the corresponding coronal mass ejection (CME) and the coronal electron acceleration signatures observed in the decimeter/microwave (dm-cm) emissions and X-rays. We find…
Hinode EUV Imaging Spectrometer Observations of Active Region Loop Morphology: Implications for Static Heating Models of Coronal Emission
Warren, Harry P.; Ugarte-Urra, Ignacio; Brooks, David H. +2 more
Theoretically, magnetic fields are expected to expand as they rise above the photosphere and into the corona, so the apparent uniform cross-sections of active region loops are difficult to understand. There has been some debate as to whether coronal loops really have constant cross-sections, or are actually unresolved and composed of expanding thr…
Stellar Populations of Luminous Evolved Galaxies at z ~ 1.5
McGrath, Elizabeth J.; Stockton, Alan; Canalizo, Gabriela
Observational evidence has been mounting over the past decade that at least some luminous (~2L*) galaxies have formed nearly all of their stars within a short period of time, only (1-2)×109 yr after the big bang. These are examples of the first major episodes of star formation in the universe and provide insights into the formation of t…