... The concepts of Fourier frequency and wavelet duration are obviously related. ... Among many sensible definitions, we chose to require that the peak of the wavelet mean spectrum should be matched with the singularity of the Fourier transform of the cosine wave. Then, it can be shown that the frequency of the cosine is related to the wavelet duration by the relation . ... The ambiguous definition of the duration of an event is common to the sizing of any object of irregular shape. ...

Next: ZGSC (Compressed GSC) and XSKYMAP . ... This is a preliminary report on an investigation of the quality and properties of plates digitized during creation of the Guide Star Catalog (GSC). The results will be vital for reclassifying GSC objects. ... Many objects are measured on more than one plate, and thus have multiple catalog entries. ... Among the shortcomings of the GSC are: biased magnitudes and incorrect classifications for certain objects, presence of artifact objects. ...

... A universal physical relation for quasars . ... Harvey Tananbaum and his collaborators have first observed a relation between the soft X-ray and the optical/ultraviolet emission in AGN in 1979. Such relation is nonlinear, and it is usually parameterized as dependence between the logarithm of the monochromatic luminosities at 2500 †Е ( L 2500†Е ) and 2 keV ( L 2keV ) . ... Yet, the dispersion along the L 2500†Е тАУ L 2keV relationship is found to be rather high, typically ~0.35тАУ0.4 in log units. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

... Recent Results . Publications . last 10 years in ADS) . ... This page is designed by A.V. Moiseev . ... The extended gas origin and kinematics in the fading AGN host galaxies" . talk on EWASS-2015, La Laguna, Jun 22-26, 2015) . Related publication: Keel et al. ... Related publication: Afanasiev V.L. et al. ... Related publication: Afanasiev V., Moiseev A. 2011, Baltic Astronomy, 20, 363 see in ADS . ... Related publication: Moiseev et al. 2011, MNRAS, 418, 244 see in ADS . ...

... Recent Topics . ... MAO main . ... The third-order space-by-time relation . ... Тема: The third-order space-by-time relation . ... The mass m experiences a gravity force toward the sun and . ... will experience the Coriolis force or Coriolis acceleration. ... differentiated space-by-time twice and discovered equation2. ... If one differentiates . ... time differentiation of space-by-time. ... third-order space-by-time relation. ... understand the third-order space-by-time relation. ... MAO NASU . ...

SAS home . ... You will find the period of a variable source and create a folded light curve of the object . ... We will run SAS and XRONOS . In pink is marked what you have to type at the command line or some useful scripts. ##########################script to extract a timing event file form ODF################################ . ... or ... setenv SAS_DIR /sas/Linux/RedHat9/sas6_1_0 . ... source $SAS_DIR/sas-setup.csh ... setenv SAS_ODF /SAS_Workshop/Timing/PSRB1509 . ... setenv SAS_CCF ccf.cif . ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

Next: CCD Reductions Up: Analysis of Results Previous: Statistical Tests . ... Multivariate statistical methods can be applied in such a situation to give an objective description of the data. ... Grosb?l, P. : 1979, Image Processing in Astronomy , Eds. G. Sedmark, M. Capaccioli, R.J. Allen, Osservatorio Astronomico di Trieste, p. 371. ... Martin, R., Lutz,R.K. : 1979, Image Processing in Astronomy , Eds. G. Sedmark, M. Capaccioli, R.J. Allen, Osservatorio Astronomico di Trieste, p. 211. ...

... Appendix - Tower Building Objects . ... TOYS.CLP - the objects used in SNEAKERS ;********************************************************************** ;***** TOYS in SNEAKERS **** ( defclass TOY ( is-a USER) ( slot time)) ;********** POINTS ********* ( defclass POINT ( is-a TOY) ( slot x) ( slot y) ( slot z)) ;*********** PLATFORMS ************ ( defclass PLATFORM ( is-a TOY) ( slot shape (allowed-symbols SQUARE TRIANGLE)) ( slot corner1) ( slot corner2) ( ...

Do LIRGs follow the Tully-Fisher relation? ... For a small we can say majority of investigate i Conclusion number of galaxies in our sample, that the T-F relation holds. ... The purpose of this research was to study the LIRGs (Luminous Infrared Galaxies) and see if they follow the Tully-Fisher relation. The LIRGs are different to normal galaxies in the fact that they emit 90% of their light in infrared. ... The faster the galaxy rotates, the wider is the emission line in velocity. ...

... Mindful of these biases, I can now explore the relations between the measured rotation periods and various other observables. The hypothesis behind monitoring stellar variability is that active stars have asymmetric spot distributions on their photospheres. ... They found that only stars with rotation periods greater than seven days show variations greater than 0.4 magnitudes at I. Bouvier et al . ... 1993a) demonstrated a relation between X--ray flux and spectral type in ZAMS stars. ...

... Pre-university education . ... SSAU History . ... International relations . ... Thus, in different years the University entered into agreements with the universities of China (Harbin Politechnical Institute, Beijing Aerospace University , Beijing Politechnical University , North-West Politechnical University , Bradley University (USA), Sofia Technical University (Bulgaria), Stuttgart Technical University (Germany), Berlin Technical University (Germany), Carlow Technical ...

... Meade Instruments Corporation . ... How to Calculate Power . How to Calculate Power: The magnification, or power, at which a telescope is operating is a function of the focal length of the telescope's main (objective) lens (or primary mirror) and the focal length of the eyepiece employed. ... Example: The Meade DS-2070AT telescope has an objective lens focal length of 700mm; when this telescope is used with a 25mm eyepiece, a power of 700/25 = 28 power (written as "28x") results. ... about meade | ...

... GBT results . ... OOF Holography Home Page Quick Links: . ... This page contains the more recent measurements with our new OOF Holography system. ... The latest Out-Of-Focus data were taken with SCUBA on 11th February 2003. ... Aperture . ... Residuals . ... The results are summarised in the following plots: ~~available soon - see previous results page for now~~ . We have recently obtained some OOF data from the Green Bank Telescope operated by the NRAO in the US. the results are shown here. ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2010 > Central Massive Objects: The Stellar Nuclei - Black Hole Connection . ... Science Users Information . ... Observing with ESO Telescopes . ... Science Software . ... ESO Science Newsletter . ... An ESO workshop for observers and theorists to discuss recent progress in our understanding of the formation and evolution of black holes and star clusters in the centres of galaxies and their connection to each...

... October 6, 09:00 09:40 . Jorge Melnick (ESO) . ... We present a statistical and temporal analysis of the ground meteorological properties recorded at the five selected sites for hosting the European Extremely Large Telescope (EELT). ... Marc Sarazin (ESO) . The organization and development of the E-ELT site testing campaign by ESO are described. ... The E-ELT Site Testing activities in northern Chile and Argentina are reviewed, and pioneering explorative campaigns are illustrated. ...

After a couple of visits by Steve Larson and Ed Beshore in late 2003 and early March 2004 to deal with various hardware issues and to install the new survey code, regular surveying commenced in mid-March 2004. ... However, the initial results are most satisfying and new objects have been found from the very first night. ... UA Media Release . ... Fellow Uppsala observer Rob McNaught was observing NEOs with the 1.0-m at Siding Spring as part of our regular program of follow-up observations. ...

Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences PUL Analysis Center Pulkovo IVS Analysis Center (PUL) 2009 Annual Rep ort Zinovy Malkin, Natalia Miller, Elena Popova Abstract This report briefly presents the PUL IVS Analysis Center activities during 2009 and plans for the coming year. The main topics of the investigations of PUL staff in that period were ICRF related studies, computation and analysis of EOP series, and VLBI2010 related issues. ...