... WR 104: A Pinwheel Star System . ... Probably not, but investigation of the unusual star system Wolf-Rayet 104 has turned up an unexpected threat. ... Research into the spiral pattern of the emitted dust, however, indicates the we are looking nearly straight down the spin axis of the system -- possibly the same axis along which a powerful jet would emerge were the supernova accompanied by a gamma-ray burst . ... June . ... June 2014 . ... Publications with keywords: Wolf-Rayet star - gamma-ray burst...

... 2014 July 21 . Spacecraft Rosetta Shows Comet has Two Components . Image Credit: ESA / Rosetta /MPS for OSIRIS Team ; MPS /UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA . Explanation: Why does this comet's nucleus have two components? The surprising discovery that Comet 67P/Churyumov–Gerasimenko has a double nucleus came late last week as ESA 's robotic interplanetary spacecraft Rosetta continued its approach toward the ancient comet's core. ... About APOD | ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. February 9, 1999 . A Supernova Star-Field . Credit: Hubble Heritage Team ( AURA / STScI / NASA ) . Explanation: Bright stars don't last forever. ... The above picture is a composite of recent images taken over several years. The explosion originated from a bright massive star that ran out of nuclear fuel . ... About APOD > . ...

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

... To avoid extensive numerical calculations in the statistical simulations, we treat the continuous evolution of each binary component as a sequence of a finite number of basic evolutionary states (for example, main sequence, red (super)giant, helium (Wolf-Rayet) star,     hot WD), in which stellar parameters significantly differ from each other. ... Figure 2: Schematic representation of the typical evolutionary track of a massive binary system with normal and compact star stages indicated. ...

... Dark energy is believed to be a component of the Universe whose repulsive gravity is presently accelerating the expansion of the Universe.€а Although it comprises the bulk of the mass-energy of the Universe, its nature is not well understood.€а €аAlbert Einstein originally suggested its existence about 80 years ago. A supernova is the explosive death of a star, which unleashes a burst of light through the cosmos. ... This website is a gift from Nancy Riess . ...

... Category: CLEAN, MANIPULATION, RADIO, TABLES File: clean.c Author: K.G. Begeman Description: CLEAN finds point source components and subtracts them with their antenna response. ... Keywords: INSET= Set and subset(s) of dirty map(s)/line(s). Maximum number of subset(s) is 2048. ... DEFSET= Set and subset(s) for definition of search area [Search area defined by box]. CLEAN looks for components only where the values in these maps/lines are not equal to BLANK. ... CUTOFF= Cutoff level [0.0]. ...

Astronotes Armagh Planetarium's Stellar Blog! ... As example you have only to look at the recent discovery of a supernova by Irish astronomer David Grennan . ... The last confirmed supernova in the Milky Way to be observed was in 1604 (known to history as Kepler ?s Star; it was bright enough to be seen in the daytime sky). €а Ever since then all supernovae examined by astronomers have been denizens of other galaxies. ... Tweets that mention Supernova spotted by Irish astronomer -- Topsy.com . ...

Hydrogen in early spectra of the Type Ic supernova XRF060218/SN2006aj V.V.Sokolov, E.Sonbas, A.S.Moskvitin, T.A.Fatkhullin, T.N.Sokolova, V.N.Chernenkov In early spectra of the X-ray burst XRF/GRB 060218 (obtained with BTA in February 2006, Fatkhullin et al., ... The same envelope was observed during the XRF/GRB burst itself as a powerful black-body (shock break-out) in its spectrum (Campana et al., 2006, Nature, 442, 1008). ...

... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...

Seven months ago, on Mar 19, 2008, at 09:12 Moscow time, a new star appeared on the sky. The Sun had already risen over the Russia, but people of the Western hemisphere might be able to see by their eyes a faint starlet near one of Bootes constellation stars. This starlet appeared and faded by an order of magnitude in a minute. Astronomers named it GRB080319B or, informally, the Naked-Eye Burst, as it was twice as bright as human eye can see a star. ... Royal Astronomical Society . ...

... Tonight's Sky . ... Observing . ... stars . ... Was Kepler's supernova unusually powerful? A bright arc of X-ray emission in the supernova remnant suggests the explosion was not only more powerful, but also might have occurred at a greater distance than previously thought. ... Evidence for an unusually powerful type Ia supernova has previously been observed in another remnant with Chandra and an optical telescope. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

This page is devoted to information on Supernova 1998eg in UGC 12133 . ... Information on the original web pages for many of these images can be found on the Supernova links web page. My basic rule of thumb is that if I get more than 6 images of a specific Supernova I usually create a web page to index these images. ... Tom Boles images 10/19/98 . ... According to IAUC 7033, English amateur Tom Boles has discovered a supernova 1998eg in UGC 12133. ... 19.906 16.0C T. Boles (discovery image) Oct. ...

2014 May version . ... Green D. A., 2014 , Bulletin of the Astronomical Society of India, 42 , 47-58. ( .pdf , or arXiv.org:1409.0637 ) If you make use of the detailed version of the catalogue, then plaese also cite: . Green D. A., 2014, `A Catalogue of Galactic Supernova Remnants (2014 May version)' , Cavendish Laboratory, Cambridge, United Kingdom (available at "http://www.mrao.cam.ac.uk/surveys/snrs/" ). ... Copyright D. A. Green 2014. 25872nd access to this version of the catalogue. ...

... Optical depth at 100 MHz 122-127 F6.4 --- e_Tau ? ... The highest absorption is observed in the direction of G0.0+0.0. ... G0.9+0.1 is a classic example of a composite, two-component SNR including an extended (8') source with a steep (a=-0.64) spectrum and a central, more compact, component (2') with a flat spectrum (a=-0.1) [49]. ... The highest absorption was observed for four sources in the direction of the galactic central region: 1, 2, 3, and the unidentified source G0.4+0.1 [t(100MHz)=6-0.8]. ...

ФОРМАТ ЗАПИСИ В БАЗЕ ДАННЫХ НА CD-ROM BYTE MNEM CONTEXT 1 - 2 NR Record length in bytes (usually 416) 3 - 6 STCOD IAGA station code, 3 letters, 4th arbitrary 7 - 9 CMP order of the components in data block, 3 10 letters and space 11 SC scaling factor, multiply all data and base values by X (SC=0 X=1, SC=1.. ... Components code: D,I-in 0.1'; H,F,X,Y,Z in nT; E-magnetic east component perpendicular to H in nT; Usually data recorded as XYZ. ... Digital geomagnetic data base for VIKING period. ...

This document explains values, tables and other matters on solar physics computing pages. ... is040423.ete : SAHA-S tables, interpolation values: T, rho, X. Z is fixed at 0.02. See reference above. opal2005.etf : OPAL EOS, interpolation values: T, rho, X, Z. Downloaded from OPAL site , marked there as "2005", seems to be unpublished. opal2001.etf : OPAL EOS, interpolation values: T, rho, X, Z. Rogers F.J., Nayfonov A. Astrophys. ... The following values can be calculated: . ... dimensionless . ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

News & Views There seems to be something very healthy about astronomical research when, under the same cover, an event which took place in 1333 AD (Leonid bursts as a resonance meteoroid component from Comet Temple/Tuttle) is discussed followed by a paper on how we might more effectively search for extraterrestrial intelligence (in the optical). In this issue we also have a further paper on young clusters (Praesepe) and the low end of the stellar mass function (see IAJ , 1999, 26(1), 17). ...