Cherechukin A.A., Koledov V.V., Shavrov V.G., Tulaikova A.A., Vasil'ev A.N. Magnetic and structural phase transitions in Ni2+УMn1-УGa (0<У<1) alloys are investigated experimentally. The martensite domains formation under the action of external magnetic field on the surface of polycrystalline Ni2,19Mn0,81Ga specimen was investigated by optical method. ... It is found that the martensite phase formation temperature is enhanced by the order of 0,3 K in magnetic field of 1 kOe. ...

... Spectroscopy of Semiconductors and Dielectrics . ... Interband optical transitions and their optical properties. ... Excitons in crystals. ... Collective interaction effects in exciton and nonequilibrium high-density carrier system. ... Carrier spin and exciton optical orientation in semiconductors. ... Two-dimensional excitons in quantum wells and related quantum systems. €аState density in transverse magnetic field and effect of random potential fluctuation on one-particle spectrum shape. ...

spaceweb@oulu.fi - last update: 28 May 1995, 0800 UT . Advanced plasma theories are extremely important when one tries to explain, for example, the various waves and instabilities found in the plasma environment. ... In the kinetic theory it is necessary to know only the distribution function for the system of particles. ... The dependence of the distribution function on the independent variables r , v , and t is governed by an equation known as the Boltzmann equation . ... Hot plasma theory . ...

... Because of the low conductivity, the magnetic coupling is weak and depends critically on density, temperature, ionisation rate and charged species. ... Implications When the Hall regime dominates near the midplane and ambipolar diffusion is dominant closer to the surface, a thicker layer of the disc is unstable to MRI perturbations and modes grow faster than under the ambipolar diffusion approximation. ... Right panel: For weak coupling, Hall limit perturbations grow until vA/cs ~ 2.9. ...

... About ATNF overview . ... Parkes radio telescope . ... Saxton & Wu (1999) presented calculations of the stability of the accretion shock which forms on the surface of an accreting magnetic white dwarf in AM Herculis type systems in an attempt to explain the observed properties of the quasi periodic oscillations sometimes seen in these systems. He showed that radiative cooling may cause thermal instability in the post-shock structure of the accretion flow settling onto a magnetic white dwarf. ...

FORTIN Jean-Yves Present address: Laboratoire International Franco-Russe (LIFR) 119002, Bolshoy Vlasyevskiy Pereulok 11, Moscow Phone: +7 905 2916722 Fax: +7 905 2916501 Email: fortin@lpt1.u-strasbg.fr September 2005 RESUME Main research interests · Nature of the disorder driven transition in random field Ising magnets. ... Recent publications [Ref. 1] Maxime Clusel and Jean-Yves Fortin, 1D action and partition function for the 2D Ising model with a boundary magnetic field, J. Phys. A: Math. ...

... My research is mainly focused on magnetic fields and their influence over activity, winds and the environment around the Sun and other late-type stars. ... Alvarado-GцЕmez, J. D. ; Hussain, G. A. J.; Cohen, O.; Drake, J. J.; Garraffo, C.; Grunhut, J.; Gombosi, T.I. Keywords: Coronae - Magnetic Fields - Late-Type - Magnetohydrodynamics (MHD) . ... Alvarado-GцЕmez, J. D. ; Cohen, O.; Hussain, G. A. J.; Grunhut, J.; Garraffo, C.; Drake, J. Proceedings of the International Astronomical Union, Volume 305...

Magnetic Fields around Radio Galaxies Robert Laing (ESO) Laing et al. ... 2008) Negligible depolarization and 2 rotation Almost all Faraday effects must be due to foreground material How to fit depolarization caused by foreground Faraday rotation Complex polarization Rotation measure Integrate over a beam Observed RM for 0 2 rotation and depolarization Faraday rotation and depolarization 5.5 arcsec FWHM Faraday effects at high resolution FWHM = 1.5 ...

In two previous papers we investigated in detail the formation of Hydrogen lines in high pressure dMe stellar chromospheres, constraining the possible structures over a two orders of magnitude pressure range. ... We found that when decreasing the transitoin region presure (i.e. the chromospheric temperature gradient), the Balmer lines change rapidly from emission to strong absorption, then the profiles weaken and become narrower until they disappear totally (zero H$_{\alpha}$ stars). ...

The magnetic mapping is fulfilled by the magnetic field line tracing from the satellite position up to the Ionosphere (stop trace at the altitude 110 km). ... As a rule the Tsyganenko [1987] external magnetic field model and IOPT = 3 (Kp = 2) are used. ... The output file includes the following information: . ... For example the file with name aa9610d1.geo contains the information corresponding to the aposteriory magnetic mapping for INTERBALL Auroral Probe for the first decade of October 1996. ...

... General information . ... Staff . Research staff . Technical, administrative & librarian staff . ... Information . ... Historical highlights . ... Space spaghetti in magnetic sauce . ... In star forming regions where we previously pictured fluffy clouds, Herschel's infrared eyes have revealed intricate networks of intertwined filaments, tufts of hair, plates of spaghetti: in short, a structure replicating on a small scale the web-like cosmic fabric of the Universe ( Molinari et al. ...

CCD Performance . ... The dark current appears to have two components: one from electronic sources in the CCD, and a second component whose strength correlates with the cosmic ray flux. ... As of this writing, the " DARKTIME" keyword in the WFPC2 image headers does not reflect correctly the actual time during which the CCD collects dark current. ... External exposures of 180s or longer made with the serial clocks off (CLOCKS=NO; the default setting) suffer an additional 60s of darktime (restart=1). ...

Main plasma parameters for inhomogeneous plasma. ... Particle motion in the Earth dipole magnetic field. ... Bounce frequency and bounce motion in the Earth inner magnetopshere. ... Low- frequency electrostatic waves in inhomogeneous low- beta plasma. ... Kinetic drift instability. ... Permittivity tensor for electromagnetic low- frequency waves in inhomogeneous low- beta plasma. Drift Alfven waves. ... Spectra of electromagnetic low- frequency waves in inhomogeneous medium- beta plasma. ...

Next: The equilibrium period Up: Evolution of Magnetic Rotators Previous: Evolution of Magnetic Rotators . Analysis of the nature of interaction of a magnetized star with the surrounding plasma allows us to write an approximate evolution equation for the angular momentum of a magnetic rotator in the general form (Lipunov, 1982a[ 98 ]) . where is a specific angular momentum applied by the accretion matter to the rotator. ... The evolution equation ( 4.10.2 ) is approximate. ...

... 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. ...

... 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. ...

The Earth. ... The middle raiding of the Earth is 6371,032 km, the pole 6356,777 km equatorial - 6378,160 km. The Earth surface area is 510,2 mln km^2, 70,8% of which is the World ocean. ... According to the modern cosmogonical views the Earth was formed 4,6 - 4,7 billions years ago from the protoplanet cloud captured by the Sun. ... The Earth is conditionally divided into 3 parts: a bark a cloak and a core (in the centre). The external layer - the bark is 35 km thick. ... Above the Earth. ...

Appendix B: The Effects of Thermal Changes on the "Absolute" Position of the Secondary . ... I will use the same nomenclature for the rod forces here as I used in Appendix A. In Appendix A, the axial force balance equation at the horizon was shown to be . ... The quantity that we really wish to derive is , where is the rod elongation at some initial epoch (i.e. when the rods were first tensioned) and where is the rod elongation at some later time after the rod temperatures had changed. ...

Next: Outputs Up: Fitting of Data Previous: External Functions . ... EDIT/FIT fitname . SET/FIT options . ... The commands have been designed so that defaults exists for almost all the parameters, (see description in Volume C of the MIDAS User Guide). ... The MIDAS command SET/FIT is used to specify the different options of the FIT command, for instance the method to be applied or the type of used functions. The instruction SET/FIT METHOD=CGNND PRINT=1 WEIGHT=S FUNCT=BLACBODY FCTDEF=USER . ...

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