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) . ...

... A brief discussion of the potential and problems of the Astronomy Thesaurus and UDC classification system took place. ... The introduction to the thesaurus explains its use and construction in detail (Shobbrook & Shobbrook 1993a). ... Discussion ensued about the use or rather non-use of the thesaurus by the editors of the core astronomy journals. ... A sprinkling of hands was raised in answer to the question of who uses UDC and those people were invited to form a separate discussion group. ...

... R.S. Furuya, R. Cesaroni, C. Codella, L. Testi, R. Bachiller, M. Tafalla . We present the results of high angular resolution observations at millimeter wavelengths of the high-mass star forming region G24.78+0.08, where a cluster of four young stellar objects is detected. ... One of the sources is detected only in the continuum at 2 and 2.6~mm and we suggest it may represent a good candidate of a high-mass protostar. Mantained by: Leonardo Testi . ...

... 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" . ...

... Baffa, C., Giani, E., & Checcucci, A. 2003, in ASP Conf. ... 314 Astronomical Data Analysis Software and Systems XIII, eds. F. Ochsenbein, M. Allen, & D. Egret (San Francisco: ASP), 157 . ... To be useful, Skysoft needs to be a long-lived project, setting little pressure for maintenance, imposing a very low nuisance level to the developers community, and requiring a low maintenance cost. ... This site is designed so that software developers acquire more visibility because of astronomical context. ...

Since the light from galaxies represents the integrated contribution of its consitutient stars, then we can learn about stellar populations in galaxies by modelling their light by summing up individual stellar spectra for different kinds of stars. ... The data cover the wavelength range 3500 - 9000 angstroms. ... Retrieve Digital Stellar Spectra Click on the appropriate spectral type. ... Note that the designation V means main sequence, IV means subgiants, III means giants, I means supergiant. ...

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 . ...

... Annual Meeting . ... Other Workshops, Conferences and Events . ... Galileo Teacher Training Program Workshop . ... Submit an abstract (please read guidelines below first). ... Please fill out the abstract form carefully since the program committee will be rating the proposals based only on the information you provide. ... For the conference, you may be the lead author on one poster paper, and one oral session: a ten-minute oral paper presentation or an hour-long workshop or a special interest group....

Proposal Identification No.: P2115 Date Received: 2005-Jun-01 23:45:27 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 12 Hours Possible Radius-to-Intensity Mapping and Mode Switching in PSR B0950+08 We request 12 hours of telescop e time for observations of a well-known pulsar, PSR B0950+08, in which we want to investigate whether its average profile at the same observing frequency represents ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... We present the numerical simulations for an electron-beam-driven and loss-cone-driven electron cyclotron maser (ECM) with different plasma parameters and different magnetic field strengths for a relatively small region and short time-scale in an attempt to interpret the recent discovered intense radio emission from ultracool dwarfs. ... A wide frequency band should therefore be covered by future radio observations. ...

Hide Zen home . ... PostgreSQL: the best DBMS solution for astronomy and astrophysics. We consider PostgreSQL, an open-source RDBMS distributed under BSD license, as one of the best database solutions for astronomical and astrophysical tasks. ... We present two backend programming modules. pgSphere, the ready-for-use contribution module for PostgreSQL, offers the capability for dealing with geometric objects in spherical coordinates. ... Zen, 2003-2007 ...

Next: The Newton--Raphson Method. Up: Fitting of Data Previous: Fitting of Data . ... In a linear problem, if the errors on the observations have a gaussian distribution, the ``Maximum Likelihood Principle'' gives you the ``best estimate'' of the parameters as the solution of the so-called ``Least Squares Minimization'' that follows: . ... A certain number of numerical methods have been developed to solve the non--linear least squares problem, four have so far been implemented in MIDAS. ...

PROGRAM, ABSTRACTS and . PROCEEDINGS . Program, abstract and proceedings . ... Abstract Preparation . ... Last updates, 24 Nov 2001: . ... The third International Conference on Physics of Low-Dimensional Structures (PLDS-3) will be held on October 15-20, 2001 in Chernogolovka, Institute of Solid State Physics Russian Academy of Sciences, Moscow District. ... The scientific program covers a wide range of issues in modern physics of low-dimensional systems including the following topics: . ...

The Astrophysical Journal . of University of Chicago Press and American Astronomical Society journal. Availability of abstract, full texts of papers since Vol. ... Astronomy and Astrophysics . ... Electronic version available for registered user (by IP), since Vol. ... Astronomy and Astrophysics Supplement Series . ... The CDS Abstract Service . Abstracts from magazines are available . Astrophysics (Sissa abstract service) . NASA Abstract Service Search Services ...

Trudy GAISH, vol. LXV, 1996 . Abstracts . The global distribution of average (5 O x 5 O ) depths . of Mohorovicic discontinuity on the Earth . ... Such analysis allows detecting whether the sources of the largest anomalies reside within the Earth's core. This is possible if the limit depths of the sources exceed the depths of the core-mantle boundary. ... by Pasinok S.L. Influence of the Earth’s cover on the polar free oscillation of the Earth’s inner core is considered. ...

Next: Acknowledgements Up: World Wide Web version Previous: Page contents . ... Part of the table and a cartoon figure of the track calculated for the default set of the initial parameters are shown in Fig. 1 and 2. In the future, we intend to made available calculations of a large number of binary systems assuming different intial distributions, chemical composition, etc., to construct a "Galaxy at will", as well as various interface facilities. ... Fri Jun 21 19:17:07 MSD 1996 ...

Peremennye Zvezdy", . ... FBQS J161047.7+330337, [BFE95] 207, RX J1610.7+3303, 1RXS J161047.7+330329, FIRST J161047.7+330337, NVSS 161048+330343 . ... The optical Variability of the Seyfert galaxy FBQS J161047.7+330337 was detected during investigation of scanned photographic plates of Moscow collection. ... The photographic light curve of FBQS J161047.7+330337 in 1973 - 1975 is presented in Fig. ... A 2MASS image of FBQS J161047.7+330337 is presented in Fig. ... Fig. ...

... Conference . ... for optical telescopes of small and medium size (up to 3-m in aperture) to be discussed. Current Status and New Projects of Small- and Medium-Size Optical Telescopes . ... Science with Small- and Medium-Size Optical Telescopes . ... 12 May 2015 - First announcement . 1 June 2015 - Registration opens . 10 June 2015 - Abstract submission opens . ... 10 September 2015 - Programme available . 19 October 2015 - Conference opens . 22 October 2015 - Conference closes . ...

... Lie algebra cohomology representing characteristic classes of flags of foliations" Preprint available at math.arxiv.org:1303.1889, 30pp. ... On generating series of finitely presented operads" (with D. Piontkovski), Preprint available at math.arxiv.org:1202.5170, 32pp. ... Quillen Homology for operads via GrЁ obner bases" (with V. Dotsenko), Documenta Mathematica. 18 (2013) pp. ... Math. ... Quadratic algebras related to the bihamiltonian operad" (with M. Bershtein and V. Dotsenko) IMRN 2007, no. ...

SAI VO . ... SAI CAS . ... Access . ... We present the results of the development of Sternberg Astronomical Institute Catalog Access Services (SAI CAS) project - the first and the only project in Russia, which provides online access to the major astronomical catalogues and different services on top of them. ... SAI CAS is an open-source implementation of the general Catalogue access service (influenced by SDSS CAS CASjobs project), based on original algorithms and open-source software. ... SAI MSU | ...