... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... The HH flow associated with young stellar object HL Tau has an exciting history and even until now the origin of some its features is not clear yet. ... Knotty structures of Herbig-Haro jets are common phenomena and knowing the origin of such structures is essential for understanding the processes of jet formation. ... In the flow detected compact knots with high (-150 km/s) and bow shape structures in front of those, with low radial velocities (-50 km/s). ...

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• New data on the cpmplex field structure of chemically peculiar stars

... Primordial theory review : Dick Bond . Defects and the CMB review : Andy Albrecht . ... Gravitational wave contribution to CMB anisotropies : V.B. Lukash and E.V. Mikheeva . C_l from cosmic strings : Lloyd Knox . Some aspects of CMB anisotropies induced from topological defects : Mairi Sakellariadou . ... CMB anisotropies from scaling sources : Ruth Durrer . ... SZ observations I : Sarah Church . ... Holes in the microwave sky? ... Detecting cosmic strings in the CMB : James Robinson . ...

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... W e study the SPS for each of regions in the Bridge, as a function of velocity and of velocity integrated width. ( v): There is considerable variation in the HI structure throughout the MB. W e probe the power spectra for four different regions in the Bridge (see Figure 1). ... W e find that the northern regions have a peak value of (v) which is ver y distinct from the sout her n regio ns. ( dv): The variation of the power spectrum index, as a function of velocity is shown in Figure 3. ...

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• http://www.naic.edu/~astro/talks/abstracts/deshpande.html
• http://www.naic.edu/vscience/schedule/tpfiles/StinebringtagP1598tp.ps
• http://www.naic.edu/vscience/schedule/tpfiles/MeriwethertagT2085tp.ps

... HST . What is the offset in the U2 direction that can be taken before a gap appears? ... HST Peer Review Process . ... HST Overview . Overview . ... Retrieving HST Data . ... HST Science Year in Review . ... What is the offset in the U2 direction that can be taken before a gap appears in the coverage of the sky between the two pointings? ... Same question for a U3 offset. ... This should allow you to accurately address the issue of optimal offsets in the mosaic. ...

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• Independent Phenomena
• STScI Preprint #1348
• Characteristics of Traps

... The Sleeping Beauty galaxy may appear peaceful at first sight but it is actually tossing and turning. ... These missions included the Surveyor series - the first vehicles to make soft landings on the Moon, Pioneer 10 and 11 - the first missions.. ... Shapley 1: An Annular Planetary Nebula . ... After the lunar module of Apollo 14 set down on the Moon, Astronauts Alan Shepard and Edgar Mitchell deployed the Apollo Lunar Surface Experiments Package (ALSEP) and collected samples of lunar material. ...

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... The search for distant objects which can be both galaxies and quasars is one of the most important problems of observational astrphysics, because it allows one to determine cosmological parameters connected with the time of appearence and evolution of stellar systems, large scale structure of the Universe. ... Radio galaxies are important objects to be studied because they are sources of infrared-optical-ultraviolet continuum, emission lines and continual radio emission. ...

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• Fabry-Perot Interferometer: Gallery Old

... The larger image shows the entire nebula; the inset picture captures the complicated structure surrounding the dying star. The remarkable features of this nebula are the numerous holes in the inner shells with jets of material streaming from them. ... The multiple shells of material ejected by the dying star give this planetary nebula its odd form. ... At least four jets of material can be seen in the "full nebula" image: a pair near 6 and 12 o'clock and another near 2 and 8 o'clock. ...

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• Galileo Returns New Insights into Callisto and Europa
• Educator's Guide to Sunspots
• A collection of images

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The interface between the lower solar atmosphere where energy is generated by subsurface convection and the corona comprises the chromosphere, which is dominated by jet-like, dynamic structures, called mottles when found in quiet regions, fibrils when found in active regions and spicules when observed at the solar limb. ... In addition, how they affect the coronal heating and solar wind need to be further explored. ...

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• ULTRACAM Observations of Subdwarf B Stars

Spatially Resolved MidIR Observations of the Disk Surrounding Par 21 Mario van den Ancker 1 1 European Southern Observatory, KarlSchwarzschildStrasse 2, D85748 Garching bei MЭnchen, Germany 1. Introduction The small group of YSOs known as FU Orionis stars provide striking evidence for the importance and irregularity of disk accretion during early stellar evolution. ... Fig. ... Par 21 is clearly resolved into an elongated structure with a size of a few hundred AU (Figs. ...

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• ESO - Spiral Structure in the Milky Way: Confronting observations and theory
• VLTI Calibrator Selection Help Page
• ESO - The reduced science spectrum displayed in the Reflex window appears good

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• Heliophysics, Internal structure and seismology
• crydee.sai.msu.(su,ru) archive: Help
• Image: Dreaming about things on display. After checking, they appeared to be

... Laboratory for Spectroscopy of Molecular Structures . ... News . ... A new article entitled Description of optical properties of cholesteric photonic liquid crystals based on Maxwell equations and Kramers-Kronig relations has appeared in Physical Review E. Congratulations to Grigoriy Ksyonz on his first publication! . 25 th February 2013 . ... 22 nd November 2012 . ... 22 nd February 2012 . 4 th Workshop on Liquid Crystals for Photonics 2012 will take place in Hong Kong December 9-11, 2012. ...

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• Laboratory of spectroscopy of defect structures ISSP RAS
• Stuff LSR ISSP RAS

Search for the youngest galaxies and the problems of galaxy formation . During 2 last years of work on the search for new galaxies in the phase of first star formation (SF) burst there were carried out spectral observations of 39 blue compact galaxies (BCGs) - candidates to the most metal deficient unevolved galaxies. 23 of them indeed have appeared new metal-poor galaxies with the oxygen abundance (O/H) (as an indicator of chemical evolution) less than 1/10 of the solar value. ...

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• Radio survey for new compact HII regions
• MIT-GB catalog
• "Structure" publications in 1996 year

The First Law (1): Energy is Conserved in a closed system: . ... We usually consider work and heat flow as the two kinds of energy . The Second Law (2): The Law of Entropy: . ... The amount of disorder increases . ... You can not go from a disordered system to an ordered system without inputting more energy (this is the most important attribute of the second law) . ... In no way can we recover work of that this disordered system without putting energy into the system. ... More on Thermodynamics . ...

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• Chaos and Thermodynamics
• The Galaxy Gallery: Messier Objects
• Evidence for Dark Matter

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

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• Y.Kupryakov, SAI, MSU

... This artist's concept shows a lump of material in a swirling, planet- . ... Astronomers have witnessed odd behavior around a young star. Something, perhaps another star or a planet, appears to be pushing a clump of planet-forming material around. ... Spitzer observed infrared light coming from one such disk around a young star, called LRLL 31, over a period of five months. ... could be shoving planet-forming material together, causing its thickness to vary as it spins around the star. ...

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• ASP: Using Multicultural Dimensions to Teach Astronomy
• ASP: To Every Season There is a Reason

ROSAT OBSERVATIONS OF PSR 0355+54 and PSR 1642--03 1 Patrick Slane Harvard­Smithsonian Center for Astrophysics 60 Garden Street, Cambridge, MA 02138 USA ABSTRACT PSR 0355+54 and PSR 1642--03 are both radio pulsars whose X­ray behavior was left unresolved by Einstein observations. 1;2 In each case, faint emission was detected near the sources, but appeared to be concentrated 1--2 arcmin from the known pulsar positions. ... Seward, F. D., & Wang, Z­R 1988, ApJ, 332, 199 3. ... 1993, ApJ, 413, L27 7. ...

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• Pat Slane: Pulsar Papers
• Eclipse Lightcurves for the Hydrostatic Model
• HEAD 2010: Chandra's Ultimate Angular Resolution

In 2001, Westerbork observations of the disturbed galaxy named VV-29 (alias Arp-188, UGC-10214) showed that there is second smaller galaxy (named VV-29c) that appears behind the western side of the main body of the distorted galaxy. ... The galaxy was featured as the May 2, 2002 Astronomy Picture of the Day . ... When VV-29 had its 15 minutes of fame in May 2002, it appeared under the name "The Tadpole Galaxy," but based on the images above, we will always think of it as "The CHAINSAW"! ...

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• C/2006 P1 (McNaught)
• Gary Da Costa's Preprints Page

Program: RFITS Purpose: Load FITS files from tape into a GIPSY set. ... Keywords: *** AUTO= Try to run in automatice mode [Y]. ... NODATA= Create only set headers [N]. ... Example: USER RFITS ,AUTO=N USER RFITS ,INTAPE=IMPORT USER RFITS ,INFILES=31 USER RFITS ,OUTSET=NGC4214 USER RFITS ,CTYPE1=RA-NCP USER RFITS ,CUNIT1= USER RFITS ,LIMITS1= USER RFITS ,GRID1= USER RFITS ,CTYPE2=DEC-NCP USER RFITS ,CUNIT2= USER RFITS ,LIMITS2= ...

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• Large-Scale Structures Behind the Southern Milky Way from Observations of
• VSOP Observing Schedule
• The giant HII region NGC 3603

... 2010 November 29 . Dark Belt Reappearing on Jupiter . Credit: NASA's JPL , U. Oxford , UC Berkeley , Gemini Obs. ... Explanation: Why are planet-circling clouds disappearing and reappearing on Jupiter? ... Earlier this year, unexpectedly, Jupiter's dark Southern Equatorial Belt (SEB) disappeared. ... Detailed professional observations revealed that high-flying light-colored ammonia -based clouds formed over the planet-circling dark belt. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

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• APOD: December 15, 1995 - M64: The Sleeping Beauty Galaxy
• APOD: 2005 August 8 - Mars to Appear Normal this August
• APOD: 2014 January 29 - Jelly Donut Shaped Rock Appears on Mars