... It seems likely that field-aligned potential drops (upward directed electric fields) are formed to create this effect (e.g., Weimer and Gurnett, 1993), although different wave-related schemes have also been suggested (e.g., Bryant et al., ... Auroral arcs have been related to large, perpendicular electric field structures, electrostatic shocks , observed mostly at geocentric distances 1.4 - 1.8 Re (9000 - 12000 km altitude; Mozer et al., 1977; Torbert and Mozer, 1978; Mozer et al., ... Res. ...

... The sky distribution of the BCGs from the HSS sample is shown in Fig. 6 together with BCGs from the SBS and Case surveys (Izotov et al. [ 1993b ]; Pustilnik et al. ... First, we compare the apparent magnitude distributions of the three samples. ... The similar behaviour of the faint end of the apparent magnitude distributions infers that the Northern BCG sample may have a similar completeness down to this limiting magnitude. ...

... Archives . ... ArXiv] 1st week, Apr. ... On the Truncated Pareto Distribution with applications by Zaninetti and Ferraro [astro-ph:0804.0308] . ... Pareto or power law seems not a good model to fit star masses[ ? ... A review of arxiv:physics.data-an:0706.1062 on power laws from the slog: . ... Instead, you see it as: power-law distribution, truncated power-law, Salpeter initial mass function, Schecter function (really a kind of gamma dist?n, but in a regime where it looks like a truncated power law...

... In brief: the frequency-dependent radiative transfer equation is solved for a dust under assumption of spherically-symmetric geometry for its distribution taking into account particle size distribution and quantum heating effects for the very small dust particles. ... Table: Model parameters for IRAS04296+3429. ... parameter . ... hot dust shell) . ... The best fit to the spectral energy distribution of IRAS04296 is shown by heavy solid line (see Table2 for details concerning parameters of the model...

Where and how are we looking for evidence of life? ... Because the universe is an immense place, it makes sense to search for evidence of life in more than one way. In addition to focusing on what we know about life on Earth, especially in extreme environments, astrobiology currently comprises three basic types of searches in space, each employing different technologies, looking in different places, and expecting to find different kinds of data: . ... The search types ? ... Extrasolar Planets vs. ...

... 1) Studying distributions of stars of different ages in irregular and spiral galaxies we found for each galaxy a clear correlation between the age of stars and the spatial size of the subsystems of stars of this age. ... We made a stellar photometry of eight NGC 1313 fields and of its dwarf companion AM 0319-662 and studied the visible distribution of stars of different ages and of metallicity in the galaxy. ... This disappeared galaxy was the cause of the gravitational deformation of NGC 1313. ...

Distribution of the analyzed SEPs with different >100 MeV proton fluxes ( J 100 ) at the microwave flux density plane ' S 9 vs. ... 1) General correspondence takes place between intensities of microwave bursts and proton fluxes - J 100 increases when S 9 and S 15 rise. ... 3) Powerful microwave bursts ( S 9 , S 15 >3000-10000 sfu ) with hard radio spectra ( S 9 < S 15 ) correspond to majority of powerful proton fluxes ( J 100 >10 pfu ). ...

A Test of Galaxy Evolutionary Models Via Angular Sizes M. Im S. Casertano, R. E. Griffiths, & K. U. Ratnatunga (The Johns Hopkins University) The relationship between angular size, magnitude, and redshift of faint galaxies is explored as a potential tool to distinguish between different galaxy evolutionary models. ... The mild lumi­ nosity evolution model predicts more luminous galaxies of large angular size at high redshift, as does a standard no evolution model. ... 25) with redshift higher than z ? ...

. Distribution of Supernovae according to their parent galaxies' recession velocity. This graph shows the distribution of SNe according to the recession velocity of their parent galaxies. This graph is kept up to date till SN 2000ek . Along X-axis there are all velocity bands so that you have to read in this way: for example, the band on the graph marked as 2000 takes in all parent galaxies' recession velocities faster than 1000 until 2000 Km/sec.

... The kernel and many system programs produce error, warning, and other messages. It is often important that these messages can be viewed later, even much later, so they should be written to a file. ... It can be configured to sort the messages to different files according to writer or degree of importance. For example, kernel messages are often directed to a separate file from the others, since kernel messages are often more important and need to be read regularly to spot problems. ...

The table of elements represents sets of elements in increasing order of minor planet numbers. ... In the column of G (slope parameter) the default value of the parameter equal to 0.15 is indicated as “X” to distinguish it from value 0.15 obtained by photometric observations (see (89) Julia, (419) Aurelia)). ... User has possibility to save the file with elements, to print it using standard means or to turn to the construction of histograms or distributions of minor planet elements. ...