A collapsed black hole in two­dimensional space­time F. Vendrell 1 Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, U.K. An imploding shell of radiation is shown to create a 2­D black hole within the framework of the ``R = T '' theory. ... 2 The collapsing shell In a two­dimensional space­time we define: ffl (x 0 ; x 1 ) = conformal global coordinates; x \Sigma = x 0 \Sigma x 1 . ... 3 Systems of coordinates ffl The coordinates y I and yE are defined for x \Gamma ? ...

"On the Nature of Gamma Ray Bursts", Astroph. Space Sci., v.85, p.459-463, 1982 (with E.I.Moskalenko and N.I.Shakura). "Evolution of the Double Neutron Star Merging Rate and the Cosmological Origin of Gamm-Ray Burst Sorces" " , Astroph.J., v.454, 593-596, 1995 (with Postnov, K.A. Prokhorov M.E., Panchenko I.E. and H.E. Jorgensen) . Back .

... ATNF Home . ... About ATNF overview . ... Parkes radio telescope . ... Parkes | ... Life on Earth is dependent on energy from our Sun. ... They named these alpha , н± and beta , нІ radiation. ... In alpha emission a particle with the composition of a helium nucleus, that is two protons and two neutrons or an alpha particle , is emitted from an unstable heavy nucleus. ... Both alpha and beta decay events often produce daughter nuclei that still possess too much energy and are intrinsically unstable. ...

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 ...

... 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) . ...

Активность : 1 октября-25 ноября; Максимум : 5 ноября 05ч UT (lambda = 223њ); ZHR = 5; Радиант : alpha = 052њ, delta = +13њ; V = 27 км/сек.; r = 2.3; некоторые пояснения Активность : 1 октября-25 ноября; Максимум : 12 ноября 04ч UT (lambda = 230њ); ZHR = 5; Радиант : alpha = 058њ, delta = +22њ; V = 29 км/сек.; r = 2.3; некоторые пояснения . Рисунок 1: Дрейф радиантов Южных и Северных Таурид: . Южные и Северные Тауриды являютя частью метеорного комплекса, связанного с кометой 2P/ Энке. ...

Cadmium-Zinc Telluride Cd 1-x Zn x Te (CZT) . ... Detectors of the ionizing radiations (alpha, gamma, X-ray); IR optics; Substrates; Crystal pieces for vacuum deposition . ... Range of "x" in Cd 1-x Zn x Te . ... Conductivity type . p -type or n -type . ... Max. detector element size . ... Max. optical quality crystal dimensions . ... Cd 0.9 Zn 0.1 Te: blanks for detectors . Cd 0.85 Zn 0.15 Te: optical filters . ...

... ESO, the European Southern Observatory . ... Travel to La Silla . ... ESO 3.6-metre telescope . ... This photograph shows the brilliant southern Milky Way behind the dome of the ESO 3.6-metre telescope at La Silla in Chile. The two bright stars in the Milky Way towards the upper right are Alpha and Beta Centauri, with Alpha being the lower of the two. The 3.6-metre telescope hosts the HARPS spectrograph, which was used to detect an Earth-mass planet orbiting Alpha Centauri B. Credit: . ...

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... November 5, 1997 . The Milky Way's Gamma-Ray Halo . Credit: D. Dixon ( UCR ), D. Hartmann ( Clemson ), E. Kolaczyk ( U. Chicago ), NASA . Explanation: Our Milky Way galaxy appears to be surrounded by a halo of gamma rays . Gamma rays are the most energetic form of electromagnetic radiation , with more than a hundred thousand times the energy of visible light, but known gamma-ray sources don't account for the diffuse distribution of this high-energy glow. ... About APOD > . ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... gamma rays . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Publications of the ASP (PASP) . ... The Gamma-Ray Burst/Supernova Connection . ... After 30 years of bewilderment, astronomers finally know that collapsing massive stars generate most gamma-ray bursts. Gamma-ray bursts (GRBs) were first detected in the late 1960s by American military satellites designed to monitor Soviet compliance with the Nuclear Test Ban Treaty. ...

... H.I.T.M.A.N. is a program that I have written to analyze transient host galaxies and obtain charateristics and properties of them. ... It determines physical, photometric, and cosmological properties of the host galaxies and can also correlate with transient properties. ... Any routine can be done stand alone instead of the full routine. ... The full details of the program will be described in Tucker et al 09a, and Tucker et al 09b, in prep. ...

... material . ... alpha . SiC . ... n,k o,e [fig] . ... Choyke, Patrick (1969) Phys.Rev. 187, 1041. beta . ... alpha, beta . ... 1977) Astron.Nachr. 298, 279. alpha, beta . ... 1983) Publ.Astron.Soc.Jpn. 35, 397. alpha, beta . ... Choyke, Palik (1985) in Palik E. (ed) Handbook of Optical Constants of Solids. ... Alterovitz, Woollam (1991) in Palik E. (ed) Handbook of Optical Constants of Solids, II. ... Press, p.705. alpha, beta . ... Laor, Draine (1993) Astrophys.J. 402, 441. alpha, beta . ...

... S = 2kT / Aeff 1 2 3 4 ) ) ) ) Planck, 2015 545 Planck, 2015 : 1) (1973). ... 1) : , , 2) (, SS433) 3) : 4) 5) 6) , 7) nu_G = w_G/ 2pi = eB/mc / 2pi _|_ || : n = 0.5 ( delta -1) -- ( 72%) [ ] 13 (2.3 ) C + S - , nu - , alpha - ( ) S ~ nu alpha : y=A y=A y=A y=A y = : 1) 2) 3) 4) alpha - 0.5 alpha alpha a 0 - , lpha 0 - , - 0.5 - , - 1.0 - + Bx ( B = alpha ) 2 + Bx + Cx x + Bx + Ce -x + Bx + Ce log S, x = log nu 1) alpha =1/3 - F(x) 2) 3) -, 4) (gamma = 1 -- 2 ...

... 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)...

... CERGA, Grasse, France We give an analytical solution of the Lagrange planetary equations expressed in a set of non singular elements for eccentricity: the semi­major axis a, the inclination i, the ascending node \Omega\Gamma – = !+ ... where e denotes the eccentricity. ... More precisely, the first part of the differential system verified by C and S corresponds to a harmonic oscillator: our method takes into account, in a first step, long period variations of 4 elements: C, \Omega\Gamma S, and –. ...

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. ...

... Submitted by Al Takeda on 11/17/2010 13:41:41 . Sadr region in Cygnus . ... Even though the transparency was poor, I initiated a short imaging run of the Gamma Cygni area. Hydrogen-alpha filter (5nm) Total= 18 minutes, 6 minute unbinned sub frames. Takahashi E-180, SBIG STL6303E CCD camera, ATMoB Clubhouse.11 September 2010. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...