Close binary systems of the RS CVn and Algol type are characterized by a highly variable radio emission, from typical flux densities of a few mJy during low-activity (quiescent) periods, up to 1 Jy during strong flares. The origin of this radio emission is attributed to the gyrosynchrotron mechanism. Several observations of these stars have shown an evolution of the radio spectrum during both the rising and decay phases of flares. ...

... HST switched to 2-gyro mode operations 18 months ago, in anticipation of this eventuality. ... NICMOS was not available for scheduling this week; observations will resume next week. ... Jane Charlton, The Pennsylvania State University . ... Abstract . ... Two new `bullets' for MOND: revealing the properties of dark matter in massive merging clusters . ... Photometric Imaging of Asteroid 2 Pallas . ... Systemic and Internal motions of the Magellanic Clouds: Third Epoch Images . ... Past weeks: . ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: ALMACAL: the evolution of the molecular gas in galaxies using ALMA calibrator observations . ... ALMA . ... ESO-MIDAS . ... It is therefore essential to probe the evolution of cold gas over cosmic time. ... We are looking for an enthusiastic PhD student who is interested in working with us in using ALMACAL to address exciting and topical science questions related to the evolution of molecular gas in galaxies. ...

... Programme . ... Abstract: The five-year WMAP results coupled with single-dish observations at low frequencies have provided us with the first broad-band, spatially resolved observational constraints on the radio spectral properties of the giant lobes of Centaurus A. I will review what this tells us about the dynamics and activity history of the source and comment on the implications for inverse-Compton emission and high-energy particle acceleration in the giant lobes. go back . ...

Find Similar Abstracts (with default settings below ) . Also-Read Articles . Translate Abstract . ... Spectroscopic and speckle-interferometric observations of the multiple system ADS 11061 . ... 49A Binary star 41 Dra is a member of the hierarchical quadruple system ADS 11061 which includes 41 Dra with a very big eccentricity (e=0.9755). Since 1993 we have performed speckle interferometric observations of the system using the 6-m BTA telescope. ... Abstract Text . ... Query Results . ...

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... Previous: Pipeline Processing and Quality Control for Echelle Data . ... On-the-fly re-calibration of HST data (OTF) has now been available at the CADC and ST-ECF for about 18 months. ... The calibration can only be executed using the calibration reference files which are available at that time. ... On-the-fly re-calibration has another advantage for our archive sites: we only need to keep the raw data and calibration reference files on-line for the process to be automatic. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... To view them, you must have access to Ghostview , or another suitable viewer. ... A. Fludra, J.G. Doyle, T. Metcalf, J.R. Lemon, K.J.H. Phillips, J.L. Culhane and T. Kosugi . ... View Abstract . ... E.R. Houdebine and J.G. Doyle . ... E.R. Houdebine, J.G. Doyle and M. Koscielecki . ... A.G. Gunn, J.G. Doyle, M. Mathioudakis, E.R. Houdebine, S. Avgoloupis . ... J.G. Doyle, E.R. Houdebine, M. Mathioudakis, P.M. Panagi . ...

... We have generated high resolution maps by using standard spherical harmonics expansion for the CMB fluctuations and by extrapolating available full sky maps to predict the Galaxy emission at frequencies and angular scales appropriate to the PLANCK space mission. ... Beam responses are typically not symmetric when they are coupled to a telescope to reach high resolutions, whereas theoretical predictions and standard deconvolution methods generally assume pure symmetric beams. ... PPEUC Proceedings . ...

Russian Military Space Activity . r The experts in space and rocketry field as well as ones interested in the Russian cosmonautics know quite a well The Military Aspects of the Soviet Cosmonautics book by Maxim Tarasenko published in 1992. This book still is an unique independent Russian research in the military space programs' field. ... Instead, as a result of the author's many years efforts, The Russian Military Space Activities book manuscript was practically finished early in 1999. ...

June 14-19, 2004 . IAU Symposium 223 "Multi-Wavelength Investigations of Solar Activity" will take place on June 14-19, 2004, St. Petersburg, Russia, hosted by Pulkovo Astronomical Observatory. ... This announcement also contains information on visa applications and financial support.The abstract, registration and financial support forms are found on the meeting Web site at http://sun.stanford.edu/IAUS223 . ... Deadline for Financial Support Applications (including abstracts) . ... Abstract Form . ...

Space debris ranging observations with Irbene RT-32 telescope . I. Shmeld, M. Abele, D. Bezrukov, V. Bezrukov, N. Jekabsons, M. Nechaeva, G. Ozolins . Ventspils International Radio Astronomy Center, Ventspils, Latvia Abstract: . Since 2007 VLBI Space Debris ranging is one of on-going activities in Ventspils International Radioastronomy Centre (VIRAC). ... space debris, radio position, ranging observations. ...

... Old World First Asteroid Radar Echo. ... It testifies that 4179 Toutatis is a double object like asteroid 4769 Castalia. ... Interference of Radar Echo from the Binary Asteroid 4179 Toutatis. ... An analysis of the 6-cm radar data revealed quasi-harmonic oscillation of the echo’s “central” Doppler frequency with a period of about 14 sec and a deviation of about (0.7*B) Hz, where B is the echo bandwidth, which for 4179 Toutatis was equal to 2.1 Hz and 1.9 Hz for 1992 Dec 8 and 9, respectively. ...

... X-Ray Binaries I . ... In late January 2000 Cygnus X-3 made a transition from a quiescent radio state (low X-ray state) to a radio flaring state (high X-ray state). ... Throughout this activity an extensive multiwavelength campaign was undertaken. These included observations in the hard X-ray (CGRO/BATSE), X-ray (RXTE/ASM/PCA/HEXTE), radio (GBI, Ryle Telescope, VLA, RATAN-600), radio imaging (VLBA), and high resolution X-ray spectroscopy and imaging (Chandra). ...

... Future seminars . ... G.V. Levina (Institute of Continuous Media Mechanics) . ... Abstract . ... The INTEGRAL mission and its first results" . ... Reconnection - new basic results and solar simulations " . October, 30 . ... D.L. Vainchtein (IKI RAN; Dept. of Mechanical and Environmental Engineering, University of California Santa Barbara, USA) . ... New results on Solar Structure and Dynamics and Solar Space Observatories " . ... E.B. Gliner (Theoretial Research Institute, San Francisco) . ...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

... It is found that the correlation coefficients between these two parameters calculated separately inside and outside the sunspot formation zone ±30 have cyclic variation and occur in anti-phase. This suggests different mechanisms of formation of the corona in the fields of small, medium, and large scales. ... The relationship between the coronal green line brightness (CGLB) and the magnetic field strength (MFS) has been investigated by constructing the corresponding synoptic maps for the 1977-2001. ...

... 2006 . ... Comparison of total ozone distribution in the high latitudes of both hemispheres SCAR XXIX Open Science Conference, 2006, 12-14 July, Hobart, Australia - Abstract Volume. ... Analyses of spectra, stability and eigenmode transverse small-scale oscillations in the inner Earth magnetosphere. 6th Open Conference of Space Projects Evpatoriya, September 2006, Abstracts . ... Ps6 pulsations in the Earth magnetosphere. 5th Open Conference of Space Projects Evpatoriya, September 2005, Abstracts . ...

... Direct observation of the vortex structure in high- T c superconductors in tilted magnetic fields. Abstract: . A high-resolution Bitter technique has been used to observe an effect of tilting the external magnetic field on the flux line lattice (FLL) in Tl 2 Ba 2 CaCu 2 O 8+x single crystals. ... The reason is believed to be that the formation of the equilibrium vortex state (vortex chains) was prevented by strong pinning, revealed for our crystals by the M(t) curves. ...

... I present results from several seasons of photometric observations of X--ray sources in the Orion OB1a and OB1b star formation regions. The initial goal was to measure the rotational periods of several dozen pre--main sequence (PMS) stars. ... Infrared and optical data confirm that 90% of the X--ray sources are PMS and about 10% of the PMS stars may have disks. ... I find rotation periods for five stars at confidence of greater than 99.9/ greater than 99/ at much lower confidence. ...