Next: About this document . Simple Model Of Accretion Onto Isolated Neutron Star With Synchrotron Cooling . ... In this work we modeled accretion onto the isolated neutron star (INS) from the interstellar medium in the case of spherical symmetry for different values of the magnetic field strength, ambient gas density and NS's mass. ... 1993 A&A 269, 319, hereafter CTL). Dependence of from t in our model coincides well with the analytic formula from CTL. ... About this document .. ...

... 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" . ...

... The dependence of velocity ellipsoid parameters for various types stars upon theirage was investigated. ... For metal-rich stars ([Fe/H] -0.1) the shape of velocity ellipsoid becomes more spherical with increasing age of the stellar group and it approaches the equilibrium shape. ... По данным uvby -фотометрии, изохронным возрастам и собственным движениям ~3500 F -звезд диска в окрестности 80 пс от Солнца исследованы зависимости параметров эллипсоидов скоростей различных звезд от возраста. ...

Paolo Padovani , II Universit di Roma , Paolo Giommi , ASI, SDC and Fabrizio Fiore, ASI, SDC and Osservatorio Astronomico di Roma . Original Version: MNRAS, (1997), 284, 569 . Text copyright (c) 1997. ... We study the X-ray spectra of 114 flat-spectrum radio quasars (FSRQ) using the hardness ratios as given in the WGA catalogue of ROSAT sources. ... We find that FSRQ have a distribution of energy spectral indices ranging between 0 and 3 with a mean value alpha_x ~ 1. ... Figure 1 (13kb) . ...

... Comparative study of Tl-2201 single crystals with different temperatures of superconducting transition by means of specific heat method. Abstract: . The comparison studies of the specific heat of Tl-2201 single crystals with the different oxygen concentration have led to the conclusion that the doping by oxygen, resulting in lowering of T c and increasing of number of paramagnetic centers, leads to diminishing of antiferromagnetic correlations contribution to the specific heat. ...

Magnetic stars, 2004, 247-249 Study of magnetic fields of different luminosity hot stars Butkovskaya V., Plachinda S. Crimean Astrophysical Observatory, Nauchny, Crimea, 98409, Ukraine Abstract. Circular sp ectrop olarimetric observations of four different luminosity hot stars were obtained in an attempt to detect magnetic fields via longitudinal ° Zeeman effect in the sp ectral line HeI 6678.149 A: Pegasi (Sp B2 IV), Orionis (Sp B2 I I I), Orionis (Sp B3 I I Ie), Persei (Sp B1 Ib). ...

... 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. ...

... 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. ...

Proceedings of the Particle Physics and Early Universe Conference (PPEUC). ... M.P. Hobson & A.W. Jones . ... A maximum entropy method (MEM) is presented for separating the emission due to different foreground components from simulated satellite observations of the cosmic microwave background radiation (CMBR). In Jones & Hobson (1998, these proceedings) , the method is applied to simulated observations by the proposed Planck Surveyor satellite. ... 1 Introduction . ... PPEUC Proceedings . ...

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. ...

... Future seminars . ... Topology and dynamics of the large scale solar magnetic field " . Elena Gavryuseva (National Institute of Astrophysics and Space Physics, Florence, Italy and Institute of Nuclear Research of RAN) . ... Observations of the large scale magnetic field in the photosphere taken at the Wilcox Solar Observatory since 1976 up to 2007 have been analyzed to deduce its latitudinal and longitudinal structures and asymmetry, its differential rotation, and their variability in time. ...

Report “Laboratory zero-baseline interferometer tests” (ZBT) was prepared and issued in ASC (35 pages including 17 figures and diagrams in Russian language). ... The Ground-Space radio interferometer (OVLBI) Radioastron includes several space and ground-based segments which are designed and manufactured by different countries and organizations. ... ZBI tests (for OVLBI) were implemented in Russia firstly. The tests were implemented by joint team of ASC, JPL and NRAO in 1999. ...

Intermediate-Mass Black Holes in the Universe: Constraints from Dynamics and Lensing . van der Marel R.P. in The Astrophysics of Gravitational Wave Sources, AIP Conference Proceedings, Vol. 686, Centrella, J., ed. (New York: AIP), 115-124, 2003 . ... Intermediate-mass black holes (IMBHs) with masses between those of ``stellar-mass'' and ``supermassive'' black holes (BHs) might have formed in the Universe in several different ways. ... Last modified November 5, 2003. ...

The total radiative power output from the hot outer layers of six late-type stars (of different spectral types and luminosity class) is derived via an emission measure technique. This analysis was based on observational data from the spectral range 100A to 3000A obtained as a result of three separate satellite missions, i.e. Hubble Space Telescope, International Ultraviolet Explorer and the Extreme Ultraviolet Explorer. ...

Magnetic Stars, 2011, pp. 153 ­ 156 Ab out the Dep endence of the Rotation Velo city of CP Stars on the Magnetic Field Glagolevskij Yu. ... Based on the observational data of the average magnitudes of the surface magnetic field strength Bs for a number of chemically peculiar stars we investigate the dependence of the rotation period on the magnetic field. ... Now the periods of rotation P and the average values of the surface magnetic field Bs are known for more than 50 magnetic stars. ...

XMM-Newton Science Analysis System . efftplot (efftplot-2.17) [xmmsas_20070708_1801-7.1.0] . Meta Index . efftplot first uses the FTOOLS powspec to compute the normalized Power Density Spectrum (PDS) of the EPIC source time series in different energy bands, then produces a plot containing the different PDS together with some information related to the observation. ... Input Files . Output Files . Algorithm . ... Index . XMM-Newton SOC/SSC -- 2007-07-08 ...

... Unlike the previous digital-only Messages, Arecibo-1974 and Evpatoria-1999, the TAM has complex, three-section structure with different forms of information. Section 1 represents coherent sounding radio signal with slow Doppler wavelength tuning to imitate transmission from Sun's center. ... Section 2 is an analog information and represents musical melodies, performed on the Theremin. ... There were seven musical compositions in the 1st Theremin Concert for Aliens. ...

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Call For Abstracts . We welcome abstract submissions for oral presentations at the workshop, Concept Development for an Upper Atmospheric Research Facility at the Arecibo Magnetic Conjugate Point in Argentina to take place in April 17 - 19, 2006 , at the Arecibo Observatory, Puerto Rico . ... This section of the meeting includes talks on the instruments that are required at the facility to satisfy the science requirements discussed in Part I of the meeting. ... Part I~50% meeting time . ...

... Future seminars . P a s t seminars . Seminar council . ... Detailed theoretical consideration of the main neutrino emission mechanisms in different layers of neutron stars (NSs) are presented. ... Cooling of NSs is simulated using realistic models of nucleon superfluidity. ... that the assumptions of strong proton superfluidity and weak neutron superfluidity in a NS core allow one to interpret two sources, RX J0822-43 and PSR 1055-52, hotter for their ages, as very slowly low-mass cooling NSs. ...