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... Tonight's Sky . ... Observing . ... Subscriber Extras . Sky this Month . ... Web Extras . ... Observing Podcasts . ... Astronomy for Kids . ... Tour the Deep Sky . ... Observing springtime deep-sky objects with a large telescope . ... Web Extra: The growing Deep Field family . ... Get instant access to subscriber content on Astronomy.com! ... BONUS web extras not included in the magazine . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... What is a pulsar? ... For young pulsars with superstrong magnetic fields ( ) and hot polar caps (with temperature of ), because of the energy loss of electrons or positrons due to resonant inverse Compton scattering in the vicinity of polar caps, pair cascades occur at distances further away from the polar cap, and in this case, we have a relatively high acceleration efficiency with ions carrying most of the particle luminosity. ... Limits on particle energies by resonant inverse Compton scattering ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The SDC incoherent scattering ionosphere diagnostics subdivision consists . ... Head - Shpynyov B.G. The main subdivision instrument is the Incoherent Scatter Radar . The Incoherent scatter ionosphere diaiagnostics subdivision's main tasks are: . Obtaining experimental data for the ionospheric structure and dynamics by incoherent scatter method ; . ... theoretical research ; . ...

... The basic principles of incoherent scatter: . ... Because of the electron movement, spectrum of the observed signal is broad and it has shape which depends, e.g., on the temperature. ... ion temperature . ... According to the theory, Ti should be replaced by (2Ti,perp + Ti,par)/3 (Williams and Jain,1986; Glatthor and Hernandez, 1990; Winser et al., 1990). ... Glatthor, N., and R. Hernandez, Temperature anisotropy of drifting ions in the auroral F-region, observed by EISCAT, J. atmos. terr. ...

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... 8, ``Celestial Mechanics'', 2002 Families of periodic solutions of the planar restricted three--body problem and their application at designing the orbit for the space radio telescope B. B. Kreisman Astro Space Center of Lebedev Physical Institute of Russian Academy of Sciences, Moscow, Russia 1. ... The monodromy matrix allows to define the directions of prolongation both of initial family, and of a family, induced by it as the solutions of second kind. If there is no second integral at q ? ...

XMM-Newton Science Analysis System . ... Meta Index / Home Page / Miscellaneous Algorithms Omdetect has a simple extended-source validation function to recognise scattered-light features and ignore them. The algorithm works by assuming a scattered-light feature consists of a number of connected pixels with values significantly above the background interspersed with pixels not significantly above the background and arranged in a random fashion throughout the source region. ...

. English . Russian KOI8 . Current server sed.sao.ru . Dissertation of Doctor of Sciences degree ( close to German Habilitation ) . A time to cast away stones, . and a time to gather stones together . Ecclesiastes, Ch. 3 ; 5 . Full gzipped PostScript version (in Russian) is here (2005), autoreferat (short thesis in Russian) is here . Main results of dissertation work . Continue...

... Birthday is the dearly - beloved holiday with the Russian families.Each . families spends some time to prepare their homes, presents and entertainment programmes for it. Some families make special cards - invitations and give . ... In many families they use to mark the height of the child on his/her birthday on the wall or on the door with the note of the date. ... In some families they make video on this day to see the changes of their child from one year to the other. ... Home page | ...

. It was a very nice evening for all and fun to meet everyone's friends and see their families again. The evening was a bit windy but clear skies. Help from all the staff that participated was terrific and the food was great. Some folks think we should go into the 'open house' business. The two images at the bottom were shot with digital cameras through the 3.5m eyepiece.

... Name (for family membership, include all family member names) Address City, State, Zip Code Home Phone Email Address Other Phone Alternate Email Occupation (if retired, list previous occupation; if student, list major) Employer or School My Employer will match my donation Membership List ­ Each year we publish our Membership List with name, city, email and home phone number and distribute this list to all members. ... Student Memberships are for FULL TIME students of any age. ...

The BOKZ family instruments have been designed for precise determination of spacecraft triaxial attitude control parameters in real time based on images of the arbitrary starry sky segments. ... Since 1999 twenty one star instruments of the BOKZ family have been launched to the nearterrestrial orbits onboard the International Space Station and ten Russian spacecraft of various types. The development of three more modifications – BOKZ-л, BOKZ-л24 Х BOKZ-2л is completed. ...

National Aeronautics and Space Administration . ... Buzz Aldrin, Ph.D. (Colonel, USAF, Ret.) NASA Astronaut (former) . ... NASA EXPERIENCE: Aldrin was one of the third group of astronauts named by NASA in October 1963. ... At Nellis Air Force Base, Nevada, he served as an aerial gunnery instructor. ... Since retiring from NASA, the Air Force, and his position as commander of the USAF Test Pilot School at Edwards Air Force Base in 1972, he authored an autobiography, "Return to Earth". ...

. Christmas History Traditions Carols Celebration in UK Celebration in USA яhristmas Menu .

Atlas of the Arcturus MgH line's families spectrum* O. M. Ivanyuk, Ya. V. Pavlenko Atlas consists on three parts: The first part ­ is a spectrum atlas in range from 4925е till 5225е that covers MgH A -X 0-0 , MgH A-X 1-1 and MgH A-X 2-2 line's families The second part of atlas shows range from 5375е till 5625е in accordance with MgH A-X 0-1 and MgH A-X 1-2 families And the third ...

Conference admission includes the following: Lodging Friday and Saturday nights, Coffee and doughnuts Saturday morning, admission to the Lectures and Star Parties. Preregistration price: Adults - $40.00 Family rate $60.00 (spouse and children living with you) Children (15 years and younger not attending with family) - $20.00. ...

... Bojan Nikolic web pages (r. 329) . Understanding Infrared emission from galaxies . Although the package <a href=?dustmodel.html?>dust</a> is primarily aimed at modelling emission from interstellar dust at mid/far IR wavelengths it has the facilities to compute both Mie <em>scattering</em> and <em>absorption</em>. ... This is a python script which calls the pydust library to compute the Mie absorption and scattering efficiencies: . ... Mie Extinction . Computing Mie Scattering . ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The sky is blue because it reflects light from the oceans. Good astronomy : The sky is blue because it is scattering blue light from the sun. ... So everywhere you look you see blue photons, except directly from the Sun, where you'll see all colors. ... The sky does not look blue near the horizon because more yellow photons (and even orange ones right at sunset) are coming from that direction as they get scattered away from the Sun. ...