Modelling Protostellar Disks Sarah Maddison Centre for Astrophysics and Supercomputing Swinburne University Overview · Types of circumstellar disks : ­ protostellar disks ­ circumbinary disks ­ protoplanetary disks · Modelling disk - important parameters: ­ Mdisk, Rdisk, H(r), i, T(r,z), (r,z)... ­ grain properties Introduction to PS Disks · Disks are a natural by- product of star formation process · Indirect evidence for ... Fuor and Xor outburst) convection in accretion disks? ...

... Допов?д?, що були представлен? п?д час л?тньо? школи 'Atmosphere researches. ... Introduction into Particulate matter research: Measurement techniques, formation, influence on air quality and climate. ... Ozone in atmosphere: General concepts, units of measurements, sources and sinks, basic observational results: vertical distribution, geographical distribution, periodical and aperiodical variability, relations with solar and geophysical factors. ... Лаборатор?я атмосферно? оптики ГАО НАНУ . ...

... Theoretical investigation was carried out of electron transport phenomena in superconducting heterostructures S-MB-N and S-MB-S with magnetic barriers (MB) determined by monolayer of ferromagnet (F) or spin-valve structures FNF or FIF (N is a normal metal, I is insulating layer). ... The I-V characteristics of cuprate bicrystal Josephson junctions have been experimentally investigated at different temperatures, barrier transparency factors and the phase difference of superconducting electrodes. ...

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... Astrophysics Group . ... Galaxy Formation and Evolution . ... Gas heating and outflows driven by accreting supermassive black holes (quasar phase) may affect the evolution of star formation in their host galaxy. ... The starburst galaxy M82, which expels dust and metal enriched gas out of its disk . ... The interstellar medium (ISM) plays a central role in galaxy evolution, providing the fuel for star formation and also hosting the ?fossil record? of the galaxy formation history. ...

The formation and evolution of Active Galactic Nuclei (AGN), attributed to accreting massive black holes (BHs), are closely related to the formation and evolution of the galaxies which host them. ... The structure and properties of the circumnuclear medium of AGN and radio galaxies, with application to AGN unification ( Sperello di Serego Alighieri , Guido Risaliti , Marco Salvati , Guidetta Torricelli ) . ...

Rocket R-5 . ... The rocket R-5 engine was provided with a special extension nozzle that enabled to increase a flight range up to 1200 km. ... Prior to carry out flight tests at the 2 NII-88 affiliate division, firing bench tests of rocket R-5 were run. ... A launch range of all 7 rockets was 1185 km. ... With a 37% increase in the R-5 launch mass its firing range increased two times as compared to R-2, masses of fore bodies being practically equal. ... Official WEB-site of S.P.Korolev RSC Energia . ...

... Phyllosilicates may form in EKB bodies during aqueous alteration [7]. ... The time m required to heat a large EKB body to the water - ice melting point and to melt the ice in its interiors can be estimated from the equation 0 Q exp(-t )dt = Tm T0 c p dT + L f m w , (1) where T0 = 30 K is the adopted value for the initial temperature of the body , Tm = 273 K is the melting temperature of water ice (a good approximation to at P 25 MPa, characteristic for interiors of a EKB ...

Nonlinear-optical Approach to overcome industrial pollution of space O. Kulagin, I. Gorbunov Institute of Applied Physics Russian Academy of Sciences, N.Novgorod, Russia Space debris threats and application of phase conjugation methods for concentrating the debris illumination · Nearly 90% of orbital debris has dimensions ~ 1-5 cm. ... Space debris illumination concentration by laser point narrowing can be achieved by means of non-linear optical phase conjugation of the debris scattered illumination. ...

How the rings were formed. ... Because of the velocity of mutual collisions increases at the approaching to the planet, there is a region near an every planet where the particles reaching the definite sizes begin to pull due to the mutual collisions. ... Any big particle passes the whole cycle from the destruction to the restoration. ... Why the rings are so flat? ... The gravitation compresses the system from all sides and the rotation axis, but it cannot prevent compression along the axis. ...

... Tonight's Sky . ... Behemoth black hole found in an unlikely place . ... black holes . ... A black hole's dinner is fast approaching . The Very Large Telescope spots cloud being disrupted by black hole. ... This is the first time that the approach of such a doomed cloud to a supermassive black hole has been observed. ... The current density of the cloud is much higher than the hot gas surrounding the black hole. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... The Russian TESIS/ CORONAS-PHOTON Solar Observatory, which has been working in orbit since January 30th, 2009, has photographed one of the most important events in the build up to the upcoming solar cycle - the formation of our star's new southern belt of activity. The first magnetic fields of the new cycle in the southern hemisphere appeared on the Sun's surface on May 23-24th. ... The belt of activity is one of the primary concepts, characterizing the solar cycle. ...

... Centaurus A: Young Blue Star Stream . ... Credit Copyright: E. Peng and H. Ford ( JHU ), K. Freeman ( ANU ), R. White ( STScI ), CTIO , NOAO , NSF Explanation: Almost lost in this cosmic jumble of stars, gas and dust is a faint but definite blue arc -- a stream of young stars whose formation was probably triggered as a small dwarf galaxy was torn apart approaching the giant elliptical galaxy Centaurus A . ... Publications with keywords: Centaurus A - NGC 5128 - galactic collision - star formation . ...

... Editor's note: This activity is both on the Astrocappella web site and the CD-ROM featured in this article. ... Every student can demonstrate the Doppler effect! ... splash out' ball** . ... Twist the 'splash out' ball open. ... This effect can occur with both sound and light, because both sound and light reveal wave- like behavior. ... The number of waves reaching an observer in one second is called the frequency. ... What has the Doppler shift told astronomers about the expansion of the universe? ...

... Radiation mechanisms of astrophysical objects: classics today . ... Studies of radiation mechanisms and processes of spectra formation in astrophysical objects are among the fundamental tasks of modern astrophysics. ... On this occasion the Saint-Petersburg State University organizes an international conference Radiation mechanisms of astrophysical objects: classics today , which will be held in St. Petersburg from September, 21 to September, 25, 2015. ... Scientific rationale . ... Conference venue...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 October 7 . Comet ISON Approaches . ... Explanation: How impressive will Comet ISON become? ... When Comet ISON dives to within a few solar radii of the Sun's surface in late November, it may become brighter than the Moon and sport a long and flowing tail -- or it may appear somewhat less spectacular. ... About APOD | ...

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The S un Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic ... Low mass stars live and die differently than high mass stars. ...

... During the past year, the parallel group of AIPS++ has been actively incorporating parallel processing into the most computationally intensive aspects of AIPS++. We report here the status of the AIPS++ parallelization effort and plans for future development. ... The goal of the AIPS++ parallelization project is to provide an easy to use, high performance processing system that allows astronomers to processes large datasets. ... Currently the parallel system shows good scaling up to 16 processors. ...

Deep Time: Earth's history and future By Colin Johnston, Armagh Planetarium Earth 4.54 billion years ago Forms in Sun's protoplanetary disc S un Elsewhere in Solar System Other planets form. ... Hot and airless Sun a subgiant, diameter 1.5 its current value, 2 6.4 billion years from no w ? ... Earth cools 20 million years later? ... Core temperature about 55 million°C, helium flash, followed by the Sun shrinking Sun is 10 times its current diameter, luminosity 20-50% current value. ...

Female Transport Came all young girls both far and near and listen unto me While unto you I do relate what proved my destiny Me mother died when I was young which caused me to deplore And made me find me way too soon all on me native shore Sarah Collins is me name and dreadful is me fate Me father reared me tenderly the truth I do relate Til enticed by bad company along with many more Which led to my discovery all on me native shore. ... And so penal Settlements were created in Australia. ...