Physics of Magnetic Stars, 2007, pp. 214­217 Magnetic field measurements for 1 Ori C with the 6-meter telescope G.A. Chuntonov Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz 369167, Russia chunt@sao.ru Abstract. The longitudinal magnetic field is measured for the star 1 Ori C at ° ° eight p oints in its p erio d using the CIV 5801 A and 5812 A absorption lines. ... 214 MAGNETIC FIELD MEASUREMENTS FOR 1 ORI C... ... MAGNETIC FIELD MEASUREMENTS FOR 1 ORI C... ... Astrophys., ...

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

... Takuya Akahori "Faraday Rotation Measure due to the Intergalactic Magnetic Field" . Shae Brown "Cross-correlation of ATLAS and Spitzer-SWIRE Surveys: Probing intergalactic magnetic fields" . Roger Clay "Using low energy cosmic rays to investigate local galactic magnetic fields" . Roland Crocker "A new lower limit on the magnetic field around the Galactic Centre" . ... JinLin Han "Rotation measures of pulsars and radio sources for Galactic magnetic fields" . ...

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The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. ... Such abrupt events were named solar flares , and what made them especially interesting was that occasionally, after a prominent flare, a magnetic storm would erupt on Earth. ...

M. ( / DIAS, Ireland), A. (ISDC, Switzerland) 1 - Key Question Only 3 binary systems regularly observed in TeV: PSR B1259-63 (young pulsar +Be star, P=3.4 y) LSI +61 303 (comp. source + Be star, P=26.42 d) LS 5039 (comp. source + O star, P=3.9 d) Origin of the high-energy emission? ... 2006; Neronov &Chernyakova 2007 4 3.4 years orbital period. e~0.87 Correlated variability with a sharp rise ( "two bumps structure" ) is seen in radio, X-ray (and TeV?) bands. ...

Next: The Stopping Radius Up: ``Ecology'' of Magnetic Rotators Previous: A Gravimagnetic Rotator . We shall assume that the rotator is surrounded by an ideally conductive plasma with a density and a sound velocity at a sufficiently far distance from the rotator. ... The following classification   of magnetic rotators     is based on the essential characteristics of the interaction of the plasma surrounding them with their electromagnetic field. ... leading to a spindown   of the rotator. ...

Compilation of cz (radial velocity) measurements . HyperLeda home | Documentation | ... The catalog (table a110 in the database) presents the compilation of redshift of galaxies, z , z = ( - 0 ) / 0 = ( 0 - ) / where and 0 refer the observed and emitted wavelength, and 0 are the observed and emitted frequency. ... For homogeneity of the HyperLEDA, the radial velocity from "radio" convention has to be transferred to redshift using formula cz = V radio / (1 - V radio /c). ... radio measurement . ...

... Future seminars . ... Magnetic explosions and physics of Gamma-Ray Bursts " . ... I will review the dynamical role of magnetic fields in extracting the energy of a relativistic rotating progenitor (like black hole ili super-massive neutron star), in collimating the outflow and in producing the observed high energy emission. In particular, I will concentrate on the dynamics of relativistic explosions in the wind zone assuming that most energy is released by the GRB progenitor in a form . ...

... To determine a lower limit to the sensitivity of current observations to measurements of NS surface temperatures, we have used data from the Einstein Slew Survey (Elvis et al. 1990) to establish temperature limits for 275 pulsars which received nonzero exposure during the survey. ... Filled squares correspond to pulsars actually detected in the survey data; the smaller symbols correspond to upper limits to the count rates. ... Click here for plot of x-ray data vs. cooling curves. ...

... ROTATION CURVE: When studying spiral galaxies it is invariably found that the stellar rotational velocity in the disk remains constant, or "flat", with increasing distance away from the galactic center. ... The rotation speed of the stars in galaxies is found NOT to decrease with increasing distance from the galactic center (see emission lines in the spectrum), implying that the overall mass distribution of the galaxy is different from the light distribution. ...

... STScI-PRC98-05 HUBBLE PROVIDES CLEAR IMAGES OF SATURN’S AURORA This is the first image of Saturn’s ultraviolet aurora taken by the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope in October 1997, when Saturn was a distance of 810 million miles (1.3 billion kilometers) from Earth. ... But unlike the Earth, Saturn’s aurora is only seen in ultraviolet light that is invisible from the Earth’s surface, hence the aurora can only be observed from space. ...

IACETH Institute for Atmospheric and Climate Science Road traffic emissions in ff Switzerland: Results from the Results Gubrist tunnel Institute for Atmospheric and Climate Science (IACETH), Swiss Federal Institute of Technology ZЭrich (ETHZ) UniversitДtstrasse 16 CH-8092 ZЭrich, Switzerland email: Johannes.Staehelin@env.ethz.ch Johannes Staehelin 1. ... Road traffic emission models and Road emission tunnel measurements 3. ... Measurements of the Gubrist tunnel Measurements of 5. ...

NUCLEAR GAS KINEMATICS OF NGC 7052 AND IC 1459 FROM HST/FOS SPECTRA To appear in `The Central Regions of the Galaxy and Galaxies', Proc. IAU Symp. ... ROELAND P. VAN DER MAREL STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA Abstract. We have obtained HST/FOS measurements of the nuclear kine­ matics of the gas disks in NGC 7052 and IC 1459. ... The ground­based NGC 7052 data were obtained with the William Herschel Telescope in 0:6 00 FWHM seeing (van den Bosch & van der Marel 1995). ...

... Be Stars . ... Magnetic Stars . ... Magnetic fields in stars are common. ... The earliest star known to have a magnetic field is the O-star 1 Ori C, one of trapezium stars in the central cluster of the Orion nebula of spectral type O6. ... The non-existence of more rapidly rotating magnetic stars was thought to be an immediate consequence of the magnetic field: The field would help the star to get rid of angular momentum by forcing the wind into co-rotation, and so to brake down the star. ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

Modelling the effects of FR II radio jets on the turbulent magnetic fields in the intra-cluster medium Mar tМn Huar te Espinosa , Mar tin Krause, Paul Alexander and Christian R. Kaiser. ... The plasma relaxes for a crossing time (118 Myr) and then we inject mass and x-momentum to a central control cylinder and experiment with the jets power: velociB µG RM maps We calculate RM= 812 dl rad m-2 from the jets' con3 tact discontinuity to the end of the domain along different viewing angles. ...

Main News Phones Research area Brief history Institute Structure Experimental Base Observational data English/Russian . ... 677980 Yakutsk, Russia . ... 7(4112)390400 . Fax: . ... Magnetic Observatory . ... the Yakutsk magnetic observatory is located at a distance of 9-10 km to the south from Yakutsk . ... absolute and variation measurements of the Earth?s magnetic field . ... facilities for absolute measurement of the geomagnetic field i.e. the proton magnetometer, the QHM-magnetometer . ...

... 2012/11/28 . Bayesian inference of T Tauri star properties using multi-wavelength survey photometry . ... A Volume Limited Radio Survey of Ultracool Dwarfs . ... A high-resolution spectropolarimetric survey of Herbig Ae/Be stars I. Observations and measurements . ... Evolutionary models for double helium white dwarf mergers and the formation of helium-rich hot subdwarfs . ... On the incidence of weak magnetic fields in DA white dwarfs . ... Magnetic fields in central stars of planetary nebulae? ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Previously understood that magnetic fields were directly related to rotation, so when I read that Mars, like Venus, didn't have one, my understanding crumbled. What exactly causes magnetic fields in planets? ... RELATED TOPICS: MAGNETIC FIELD . Planetary magnetic fields are definitely related to rotation, but directly not so much. ... Get instant access to subscriber content on Astronomy.com! ...