... Where we have just a single image we assume a probabilistic mode of source detection such that, at a given image pixel, if the probability that the observed value at that pixel could have arisen through statistical fluctuation of the background at that pixel lies below a certain limiting probability , the pixel is considered to contain a source. In XMM practice it is likelihood rather than itself which is employed; in this case the detection criterion is for to exceed the cutoff . ...

CP violating vacuum transition and big bang nucleosynthesis H.L.Duorah Gauhati University, Assam, India An analysis of primordial nucleosynthesis is made in the per- spective of transition in the early universe from quark-gluon to a hadronic phase in a CP violating vacuum. ... The ratio of number density of neutrons to protons is calculated for a transition temperature  200MeV f or various values of neutrino degeneracy, e = e =T; e being the chem- ical potential of the electron type neutrino). ...

... Space flight . ... Space Hotel . ... The program of deployment of small orbital station (SOS) consisting of a family of spacecrafts and module-spacecrafts represents a consecutive realization of flight scenarios with consecutive building up of functions. ... Scenario 1 - the regular and revised spacecrafts of class "Soyuz" - TMSC and MNMSC (MNMSC-cargo, MNMSC-MR) are used, pls. see fig fig.8 . ... The terms of transition to this scenario are determined by terms of readiness of one or another module....

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... We present a photometric and spectroscopic study of the unique isolated nearby galaxy KKR25. The isolated dwarf spheroidal (dSph) galaxy KKR25 was discovered by Karachentseva, Karachentsev Richter (1999, A , 135, 221) during the search of dwarf galaxies in the direction of the Local Void. In spite of its isolation KKR 25 has no gas and looks like a normal dwarf spheroidal system. ... This is the first known planetary nebula in a dwarf spheroidal galaxy outside the Local Group. ...

... In this poster we propose a hypothesis that within fixed assumptions about internal physics (opacity, thermodynamics, nuclear reactions) a strict relation between the surface helium abundance and the entropy of the adiabatic part of the convective zone exists for all solar models. This hypothesis is verified with models under simplified physics (Christensen­Dalsgaard 1988) and with six evolutionary models computed by Christensen­Dalsgaard (1992). ... 1990, Christensen­Dalsgaard 1991). ...

Questions to Jim Chiang (paraphrasing): From Randall Smith: Q: Have you considered parallelizing the calculations to make the execution for the fitting faster? A: The present code hasn't been written with parallelization in mind, but this is something worth considering. Certain parts of the calculation have been factored out and precomputed outside of the parallelization. ... Where does it come from? A: It comes from the n_k! that you see in the Poisson likelihood (viz. p11) ...

Astronomy Picture of the Day . ... Why would a rising Sun look so strange? ... One solar day on a planet is the length of time from noon to noon. A solar day lasts 24 hours on planet Earth. On Mercury a solar day is about 176 Earth days long. The Comet Hartley 2 Cruise . ... Early last November, small but active Comet Hartley 2 (103/P Hartley) became the fifth comet imaged close-up by a spacecraft from planet Earth. ... Did a sun-diving comet just cause a solar explosion? ...

... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...

Astronomy Discussion Forums . Forums: . ... I Disagree, Dr. Dick! Forum List | ... Post Message | ... I disagree, Dr. Dick. Quoting: . The view of "reality" I present consists of a random presentation of random information (in essence, no rules what-so-ever)." ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Home Gallery Club Events AAA president Marcelo Cabrera presents AAA Amateur Astronomers Medal to Al Nagler of TeleVue Optics with AAA vice-president Susan Andreoli. ... A History of the First Forty Years of the Amateur Astronomers Association . ... AAA president Marcelo Cabrera presents AAA Amateur Astronomers Medal to Al Nagler of TeleVue Optics with AAA vice-president Susan Andreoli. by . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... 24-Sep-14 JOURNиES 2014 Investigation · checking possibility of nutation rates estimation based on RLG observations simulation level · combination of simulated RLG data with real VLBI data · comparison of estimates based on real RLG data (Wettzell) with results of simulation 24-Sep-14 JOURNиES 2014 Simulation ... 10-8) 24-Sep-14 JOURNиES 2014 Simulated data + VLBI (ac. lev. ...

Hide Zen home . ... Extent is a shortest and non-nested sequence of words, which satisfy a query . ... We don't consider normalization of document weight to 1, since we have no global information about document collection. w{i}, len{i} - weight and length of i-th extent . ... Next - the number of unique extents. freq{i} - frequency of i-th extent . We could consider strict and soft uniqueness of an extent, depending on how do we consider the order of words in extent. ... 2 - document length . ...

... To the Greeks and Romans, what may be considered now as a simple beauty treatment was much, much more БЂ“ evidence of a civilized citizen. In todayБЂ™s context, more and more people opt for a wax for many reasons. ... Bцјty Salon London provides a multitude of answers, each administrated by trained professionals with a wealth of experience. If you are searching for a waxing Fulham-side, then Bцјty is the ideal beauty salon London for you. ... Aerzen Blowers . ... Beauty Salon London . ...

... For clarity sake, we limited the output to 4 row of 4 pixels, but the pattern presented is the same of the real one. Global view of the entire clocking pattern, composed by one reset, the first read, the integration and the second read. ... Enlarged view of reset portion. Enlarged view of first read portion. Enlarged view of integration portion. ... Back one page . ...

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

. This section explains the meaning of the various diagnostic messages that the command may present you with. Messages that are considered self explanatory are not included.

... Educational programs (English) . Educational programs (Russian) . ... Pre-university education . ... Samara region . ... Samara State Aerospace University proposes to develop scientific and educational projects in the field of advanced space technologies together with developing countries. ... The University also took the initiative to hold in 2017 the United Nations Symposium in Samara, confined to the 60th anniversary of the space age beginning (launch of the first Earth satellite vehicle). ...

... The IDL-based simulation software Code for Adaptive Optics Systems (CAOS) was originally developed to simulate the behavior of generic adaptive optics systems. ... We present in this paper the last version (3.0) of the CAOS Simulation Package, together with an example of an application to the Large Binocular Telescope interferometer adaptive optics system. ... Table 1 shows a complete list, together with a very brief description, of the modules of CAOS Simulation Package 3.0. ...

Solar Large-Scale Chains: Some Events . ... The chains appear to light up separators or quasi-separatrix layers between different interacting large-scale magnetic flux systems in the global solar magnetosphere and, in particular, to outline large-scale coronal structures involved in the CME process. ... Some features of the chains and their relations to CMEs are illustrated for a number of halo CME-associated events. 23 events of 1997-2000 . ... Halo-CME-associated events of November 1997 . ...