... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

Еще в разделе: (Показать все результаты (>95) - mavr.sao.ru/ )

• Metagalaxy sector, archive 1998
• interests_lebedev_en
• Galaxy sector, archive 2004

Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Апрель 1998 . ... Дата: 03 апреля 1998 (1998-04-03) От: Alexander Bondugin Тема: Hubble Reveals Details Of A Newly Born Planetary Nebula Привет всем! ... STScI-PR98-15 HUBBLE REVEALS DETAILS OF A NEWLY BORN PLANETARY NEBULA Astronomers have caught a peek at a rare moment in the final stages of a star's life: a ballooning shroud of gas cast off by a dying star flicking on its stellar light bulb. ...

Еще в разделе: (Показать все результаты (>66) - www.astrolib.ru/ )

... Лат. назв. Vulpecula, сокр. лат. ... Введено Яном Гевелием между Стрелой и Лебедем и первоначально названо Лисичка с Гусем. ... В созвездии Лисички есть яркая крупная планетарная туманность, очень причудливая по своей форме. Мессье заметил ее 1654 году и занес в свой каталог под номером 27. ... Нас разделяет 300 парсек. Кроме того, в Лисичке есть сравнительно яркая цефеида T, меняющая блеск от 5.9 m до 6.9 m за период 4.44 суток. ...

Еще в разделе: (Показать все результаты (>3) - astrometric.sai.msu.ru/ )

... Discovery of 47-s pulsations in the X-ray source 1RXS J225352.8+624354 / arXiv:1305.3439 , May 2013 . ... Optical spectroscopy of X-ray source IGR J22534+6243 / Atel # 4248 . ... Search for counterparts of newly discovered INTEGRAL/IBIS sources / Atel # 4166 . New INTEGRAL Galactic Plane Survey in SkyView / blog . Likely X-ray counterparts of newly discovered INTEGRAL/IBIS sources / Atel # 4165 . AGN in the INTEGRAL/IBIS 9-year Galactic hard X-ray survey / Atel # 4151 . ...

Еще в разделе: (Показать все результаты (>76) - hea.iki.rssi.ru/ )

Supernova 1987A in LMC . One day in 1987, an astronomer by the name of Ian Shelton was making observations of the Tarantula Nebula in Large Magellanic cloud at Las Campanas Observatory, and he noticed something strange on his image. ... SN 1987A got as bright as 2.7, the only other recent SN even to come close was 1885A in M31 which got up to mag 6. ... Mag 4.5 . ... IAUC 4318 2/25/87 Type II? ... IAUC 7354 2/1/00 New structure in the inner ring . ... IAUC 7360 2/7/00 HST observation of new spot . ...

Еще в разделе: (Показать все результаты (>264) - www.rochesterastronomy.org/ )

• Supernovae 2013ev in IC 1296

... Obviously, the size of the cavern is of the order of the Schwartzman radius. ... Thus, consideration of the inverse effect of pulsar radiation on the properties of accreting plasma makes the ejection possible even when the Schwartzman radius is smaller than the capture radius. ... If the cavern radius , the condition at its boundary can be written as . ... Apart from magnetic dipole radiation, the cavern may also contain relativistic particles (which are also reflected from the cavern boundary). ...

Еще в разделе: (Показать все результаты (>62) - xray.sai.msu.ru/ )

• Science with CXO
• AXAF-Chandra
• 22.01.2001

... N. Kardashev and M. Popov informed the participants on the current IOC results. ... Kovalev). ... Agenda of the RadioAstron teleconference November 16, 2011 Corrections to the Agenda 1 2 3 4 5 6 IOC status and results Single Dish observation with RA VLBA observations to find best fringe search candidates Fringe search plan Early science program plan Tracking stations outside Russia N.Kardashev N. Kardashev / M.Popov V. Kostenko E.Fomalont M.Popov Y.Y. Kovalev / M.Popov /A.Alakoz ...

Еще в разделе: (Показать все результаты (>15) - www.asc.rssi.ru/ )

Yu.V.Lunyova, A.F.Kholtygin . Chemical evolution of the system of galactic planetrary nebulae , Astrophysics , 45 , 451-463 (2002) . Chemical evolution of the system of galactic planetary nebulae beginning from the early age of the Galaxy is investigated. We calculate radial and vertical abundance gradients of C, N, O, Ne, Ar, Cl and S depending of different ages of the central star of the nebula. It have been founded statistically significant dependence of abundance gradients with the age of central star.

Еще в разделе: (Показать все результаты (>56) - www.astro.spbu.ru/ )

• Alexander Kholtygin's papers

... Межзвездная среда и туманности . ... Он назвал их "планетарными туманностями", поскольку они имели некоторое сходство с зеленоватыми дисками планет. ... планетарные туманности. ... Есть области, где межзвездный газ состоит из нейтральных атомов водорода ( области H I ) и области ионизованного водорода ( зоны H II ), которыми являются светлые эмиссионные туманности вокруг горячих звезд. ... Если звезда, которая находится в туманности или рядом с ней достаточно горячая, то она ионизует газ в...

Еще в разделе: (Показать все результаты (>28) - www.scientific.ru/ )

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... This time, for the next few weeks, I invite you to take a look at the Universe In Motion . ... The only motions we see easily are the rising and setting of the Sun, Moon and stars, but that is a reflection of our own Earth's rotation. ... The Crab Nebula is one such supernova remnant, and the nebula we see is the what's left of the tremendous explosion that spelled doom for the star...

Еще в разделе: (Показать все результаты (>32) - www.badastronomy.com/ )

Methods of Spectral Classification of Stars by Spectrum Photos with Prism. Work with the Computer Program. Determination of Magnetizing Force in Sun Spot by Zeeman's Effect. Investigation of Telescope Optics by Hartmann Method. Investigation of Photoelectric Multiplier. Determination of Stellar Temperature by Method of Spectrophotometric Gradient. ... Investigation of Light Filters Transmission by Photoelectric and Photografic Methods. ... Investigation of Globulae. ...

Еще в разделе: (Показать все результаты (>27) - space.univ.kiev.ua/ )

... astro-ph . ... A recent change in the optical and {\gamma}-ray polarization of the Crab nebula and pulsar . ... A change in the optical polarization angle has been observed by this work, from 109.5 \pm 0.7\deg in 2005 to 85.3 \pm 1.4 \deg in 2012. ... The change in the polarized optical and {\gamma}-ray emission of the Crab nebula/pulsar as observed, for the first time, by GASP and Integral may indicate that reconnection is possibly at work in the Crab nebula. ...

Еще в разделе: (Показать все результаты (>16) - vo.astronet.ru/ )

... English . language . ... Россия, Владивосток 4-11. ... 2006 Vladivostok, Russia . ... Show the region of the sky where is the Andromeda nebula (M31, NGC 224) to supervisor. ... Contour by your hand the region of the sky, which never rise in Vladivostok. ... Покажите экзаменатору область неба, где находится туманность Андромеды (M31, NGC 224). ...

Еще в разделе: (Показать все результаты (>89) - www.issp.ac.ru/ )

• V International Astronomy Olympiad, Problems to solve (in English)

... These images were provided to Winer Observatory by Mike Shade of Sonoita Hills Observatory as an example of the outstanding work done by local Sonoita amateur astronomers. ... All images on this page were taken with a 6-inch Astro-Physics aprochromatic refractor at Sonoita Hills Observatory using an SBIG ST-7 camera. ... Object: Galaxy Messier 100 . ... Date: March 2001 . ... All images on this page were taken with an f/5 Newtonian reflector at Sonoita Hills Observatory using an SBIG ST-7 camera. ...

Еще в разделе: (Показать все результаты (>13) - www.winer.org/ )

... Up: Algorithms . ... The imaging problem can be described as an optimizing problem in mathematics. ... Computer simulations of rotating modulation collimator imaging show that the quality of images from this method is better than that from the traditional cross-correlation method. ... The imaging problem is: . ... The results show that this algorithm can be used in the imaging problem and usually results in a better image than that obtained from a traditional method such as cross-correlation. ...

Еще в разделе: (Показать все результаты (>95) - www.adass.org/ )

• New Tools for the Analysis of ISOPHOT P32 Mapping Data in PIA
• Image Reconstruction with Few Strip-Integrated Projections: Enhancements by

National Aeronautics and Space Administration In one of the most detailed astronomical images ever In one of the most detailed astronomical images ever produced, NASA''s Hubble Space Telescope captured an produced, NASA s Hubble Space Telescope captured an unprecedented look at the Orion Nebula. ... Aircraft Operations helps shuttles get off the ground by Kendra Phipps NASA/Markowitz JSC2004E47014 M ost people get their weather reports by turning on the local news, or by searching a weather Web site. ...

Еще в разделе: (Показать все результаты (>23) - www.jsc.nasa.gov/ )

... Seeking a splendid escape to the beach or the cool breezes and green hills of the foothills and mountains of the northeast can offer a chance to take a longer look at the summer sky. ... StarQuest Memories. StarQuest was a blast this year! ... The observing at StarQuest, especially on Saturday night, was worthy of pulling an all-nighter, and several of us had our eyepieces and CCD cameras working all night along (including Brian Van Liew and Bob Vanderbei with their CCDs). ... Dark Skies! ...

Еще в разделе: (Показать все результаты (>67) - www.princetonastronomy.org/ )