... The most precisely determined characteristic for accreting neutron stars (NS's) is their period. ... Period changes show fluctuations. ... Some applications of stochastic processes in astrophysics especially in accreting systems were discussed in Lipunov (1987),Hoshino Takeshima (1993) and Lipunov (1992).In Hoshino Takeshima (1993) the authors, using simple models of MHD turbulence, try to explain aperiodic changes in X-ray luminosity of X-ray pulsars. ... Here, -constant angular momentum. ...

The AstroGuide . ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . IPAC exists to carry out large, data-intensive processing tasks of critical importance to NASA's infrared astronomy program, and to provide scientific expertise on those projects to the astronomical community. ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Общая Астрономическая Конференция > Практика > Астрономические наблюдения . Звезда рядом с Венерой . ... Поиск . ... Timur . ... Если посмотреть в SkyMap, получается, что около 2 ч. Московского летнего времени Венера проходила примерно в 0.5' от переменной звезды TV Gem. ... Julian day number 2452125.41667) . ... Созвездия (поиск и описание) .. Созвездия южного неба (поиск и описание) .. Осенние созвездия (поиск и описание) .. Летние созвездия (поиск и описание) .. ...

Next: Historical Notes Up: The Chirplet Transform: Previous: The Chirplet Transform: . ... One of these TF methods, the short-time Fourier transform (STFT), has been used extensively for analyzing speech, music, and other non-stationary signals. ... Another time-frequency representation (which might more appropriately be called a time-scale representation) is the well-known wavelet transformheil-walnut,mallat:theory,daubechies:transform,strangwavelets. ... Historical Notes . ...

Neptunes in the Noise: Improved Precision in Exoplanet Transit Detection AimИe Hall , Simon Hodgkin , Gabor Kovacs and Don Pollacco 1 1 1 1 2 Institute of Astronomy, University of Cambridge 2 Department of Physics, University of Warwick Figure 2 (right): Distribution of radii of all known exoplanets (grey), with those from Kepler (green) and SuperWASP (blue) also shown. We present early results from a new analysis of raw data taken with the SuperWASP telescope[1]. ...

. Name of process . Radiative Transitions . Phoionization . Photorecombination . Dielectronic Recombination . Autoionization . Electron Impact Excitation . Electron Impact Ionization . Charge Transfer . Proton Impact Excitation and Ionization . Collisions with heavy particles . Auger Processes .

I/220 The HST Guide Star Catalog (Lasker+ 1992) ================================================================================ The Guide Star Catalog Version 1.1 - An all-sky astrometric and photometric catalog to support the operation of the Hubble Space Telescope The Guide Star Catalog Version 1.0 is described in a series of papers: I. Astronomical foundations and image processing Lasker B.M., Sturch C.R., McLean B.J., Russell J.L., Jenkner H., Shara M.M. =1990AJ.. ... Astrophys. ...

Astronomy Picture of the Day . Hickson 91 in Piscis Austrinus . ... 24.03.2016 . ... Explanation: Scanning the skies for galaxies, Canadian astronomer Paul Hickson and colleagues identified some 100 compact groups of galaxies , now appropriately called Hickson Compact Groups (HCGs). ... The group's three colorful spiral galaxies at the center of the field of view are locked in a gravitational tug of war , their interactions producing faint but visible tidal tails over 100,000 light-years long. ...

... The Zenit-SM Launch Complex . ... The launch complex is intended to launch the Zenit-3SLB, Zenit-2SLB and provides the ILV installation on the launch pad, full kit of prelaunch processing, propellant loading, prelaunch processing and launch of ILV assembled. ... The launch facilities are intended for accommodation of the launch and other processing equipment (including SC electrical ground support equipment) used for launch operations. ... LAUNCHERS | ... Official WEB-site of S.P.Korolev RSC Energia...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...