101206 : M57 - Ring Nebula; Jack Dembicky, Apache Point observer . 101206 : M27 - Dumbbell Nebula; Jack Dembicky, Apache Point observer . 101206 : M1 - Crab Nebula; Jack Dembicky, Apache Point observer . 101206 : NGC 300 - B22 - Horsehead Nebula, Jack Dembicky, Apache Point observer . ... 090106 : Eskimo Nebula (planetary); John Barentine, Apache Point observer . ... 110398 : "Einstein Cross" Gravitational Lens System 2237+0305; Princeton University and Apache Point observers . ...

gamma Cephei A . HD 222404 . ... Расстояние от Солнца . ... Масса ( солнечных масс ) . ... масс Юпитера . ... Расстояние в перицентре - 1.95 а.е. Расстояние в апоцентре - 2.15 а.е. Радиус эффективной земной орбиты (показана зеленым цветом) - 3.38 а.е. На расстоянии 1.467 угловых секунд (20 а.е. в проекции на небесную сферу) расположен звездный компаньон. По данным астрометрии наклонение орбиты гамма Цефея b составляет 5.7 +15.1/-1.9 градусов, а истинная масса объекта - 5-27 масс Юпитера ...

... Mission . ... August 18, 2009 Roscosmos (Russia) and DLR (Germany) signed an Agreement "On cooperation in the framework of Spectrum-Roentgen-Gamma orbital astrophysical project" . ... It will allow detection of about 100 thousand clusters of galaxies and discovery large scale Universe structure. ... Then it is planned to observe dedicated sky regions with high sensitivity and thereafter to perform follow-up pointed observations of selected sources. ... High Energy Dept. 2016 IKI RAN ...

Cosmic rays are not the only sign of high energy particles in the distant universe. Additional evidence comes (like most astronomical data) from visible light and other types of electromagnetic waves , e.g. x-rays and radio waves. ... Photons of visible light have about 2 electron volts (ev), while medical x-ray photons may have energies of 50,000 ev and those of gamma rays reach 1,000,000 ev and even more. ... To produce x-rays or gamma rays, electrons must collide with something. ...

... GAMMA-RAY BURSTS . Nature of the cosmic gamma-ray bursts (GRB) is still not clear, but there are arguments in favor of their cosmological origin with the red shifts up to 3-4. Cosmological GRB produce huge amount of energy, which is considered in the form of an expanding fireball, or rapidly (ultrarelativistically) moving cannon balls. ... To explain this phenomenon a specific distribution of matter around the source was considered. ... previous page . next page . ... CYGAM (PDF, 450 Kb) . ...

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... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...

... Home Gallery Astrophotography Deep Sky Images by Joe DiNapoli . ... Deep Sky Images by Joe DiNapoli . ... Deep Sky Gallery by Ed Fox . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

N NGC N Созв. ... C-1 NGC 188 Cep OC Open cluster 00h 44.4m +85 20' 8.1 14 C-2 NGC 40 Cep PN Planetary nebula 00h 13.0m +72 32' 12.4 0.6 C-3 NGC 4236 Dra SG Spiral galaxy 12h 16.7m +69 28' 9.7 19 x 7 C-4 NGC 7023 Cep BN Bright nebula 21h 01.8m +68 12' -- 18 x 18 Refl. nebula C-5 IC 342 Cam SG Spiral galaxy 03h 46.8m +68 06' 9.2 18 x 17 C-6 NGC 6543 Dra PN Planetary nebula 17h 58.6m +66 38' 8.1 5.8 Cat's Eye Neb. ... C-103 NGC 2070 Dor BN Bright nebula 05h 38.7m -69 06' -- 40 x 25 Tarantula Neb. ...

... Логотип миссии GLAST . ... Объектами наблюдения Fermi являются: активные ядра галактик, черные дыры, нейтронные звезды, пульсары, микроквазары, космические лучи и остатки сверхновых, галактика Млечный путь, наша Солнечная система, ранняя Вселенная, темная материя и другие высокоэнергетические источники. ... Не исключено, что именно данные с GLAST сыграют ключевую роль в разгадке тайны темной материи. ... Deep Space 1 . ... GLAST (Gamma-ray Large Area Space Telescope) . ... Союз (космический корабль)...

... 8, ``Celestial Mechanics'', 2002 FCN -- period dependence on dynamic characteristics of a lunar core A. Gusev 1 , N. Petrova 1 , N. Kawano 2 , and RISE group 2 1 Kazan State University, Kazan, Russia 2 National Astronomical Observatory, Mizusawa, Iwate, Japan Two modes in a polar oscillation are obtained when a free rotation of the two--layer Moon was studied: 1 PCW = 2\Omega A Am p fffi ё 1 74yr 1 P FCN = \ Gamma \Omega A 2Am ` C c \ ...

11 august 2014/Monday: Arriving, Registration . ... The variation of solar flare coronal X-ray source spatial properties. ... Melnikov V.F., Charikov Yu.E., Kudriavtsev I.V. Directivity of X-ray and gamma-ray emission from different parts of flaring magnetic loops. ... E., Melnikov V.F. Angular characteristics of polarization degree of hard X-ray emission from different parts of flaring magnetic loops. ... The thick target model and analytical calculations of the hard X-ray emission from solar flares. ...

Ioffe Physical Technical Institute . Department of Theoretical Astrophysics . Neutron Star Group . Last updated on Jul 29, 2013, by Yuri Shibanov .