... Credit Copyright: High-Z Supernova Search Team , HST , NASA Explanation: Far away, long ago, a star exploded. ... Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae . ... The large number and great distances to supernovae measured in 1998 have been interpreted as indicating that we live in a previously unexpected universe . ... 1997 1998 . ... Publications with keywords: cosmology - universe - supernova . ... Shocked by Supernova 1987A...

... December 30, 1998 . Supernova 1994D and the Unexpected Universe . Credit: High-Z Supernova Search Team , HST , NASA . Explanation: Far away, long ago, a star exploded. ... Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae . ... The large number and great distances to supernovae measured in 1998 have been interpreted as indicating that we live in a previously unexpected universe . ... About APOD > . ... NASA Technical Rep.: ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2015 May 31 . Supernova 1994D and the Unexpected Universe . Image Credit: High-Z Supernova Search Team , HST , NASA . Explanation: Long ago, far away, a star exploded. ... Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae . ... About APOD | ...

The annual Geminid meteor shower makes its return to the vicinity of the Earth over the period 7th to 16th December, with the peak of activity expected to occur during the morning of 14th December. ... The Geminids appear to radiate from the constellation Gemini, The Twins, which lies high in the west in the early morning December skies. ... The near-Earth asteroid, Phaeton , discovered in 1983 using a NASA satellite, appears to be the source of the shower. ... Photographing Meteors . ...

... If ephver 2 is in the parameter file then the tempo1 emulation mode is automatically used. Ephver 5 has been introduced and will be included in all tempo2 ephemeris files . Many other changes and bug-fixes to correspond with the tempo2 publications More small changes prior to acceptance of the first tempo2 paper for publication More small changes prior to submitting the first tempo2 paper for publication. ... Numerous changes mainly for the coding. ... Tropospheric delay modelling . ...

Supernova 2000cl in NGC 3318 This page is devoted to information on Supernova 2000cl in NGC 3318 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the Supernova links web page. ... Robin Chassagne's Supernova in NGC 3318 web page in French [ Translate ] . ... Robin Chassagne image . ... and Lidman image . ... vsnet-alert 4896 ] SN 2000cl in NGC 3318 . ...

... The parameter y   characterizes the ratio between the gravitational and magnetic ``properties'' of a star and will, therefore, be called the gravimagnetic parameter . Two magnetic rotators having quite different magnetic fields, subjected to different external conditions but with identical gravimagnetic parameters, have similar magnetospheres, as long as the accretion rate is quite low ( ). ... For isolated rotators, the accretion rate  yr is assumed. ...

... 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. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Earth Satellites . ... Leonid meteors seen from 13 km altitude aboard an aircraft during the 1999 Leonids Multi-Instrument Aircraft Campaign (Leonid-MAC). Comet Tempel-Tuttle provides the cometary debris for the Leonid meteor shower. ... Every 17-19 November Earth crosses Tempel-TuttleтАЩs orbit and the Leonids become visible. With clear, dark skies observers may see 10 to 15 Leonid meteors every hour on those mornings. ...

... HST . UDF/ACS Parameters: . Pointing, Filters, Depth, and Status . ... Data . ... Based on a consensus recommendation of a Scientific Advisory Committee to the STScI Director Steven Beckwith, supported by planning documents from a local Working Group , the parameters below have been adopted for the HST/ACS Ultra Deep Field. ... At the center of this picture the light blue diamond shows the ACS/WFC pointing of the Ultra Deep Field (UDF). ... Relative Depth of UDF w.r.t other HST surveys . ...

... Meta Index / Home Page This section documents the parameters recognized by this task (if any). ... string . ... maxlegal'/`maxactual'/`user' . ... If xrangetype is set to `maxlegal', the values of TLMINn and TLMAXn are used, where n is the number of the column whose name is given by the xcolumn parameter. ... When xrangetype is set to `user', this parameter is expected. xmax . ... This is set if the total flux image should be read (using the name given in parameter imageset ) rather than created. ...

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 20 - 26.08.2012, Forecast on 27.08 - 03.09.2012, Carrington Rotation 2127 (15,04.08.2012) SUNSPOT ACTIVITY OF THE SUN REMAINED AT THE AVERAGE LEVEL. ... ON THE VISIBLE SOLAR DISK CONSTANTLY THERE WERE 4-5 SUNSPOT GROUPS ONE OF WHICH, APPEARING ON THE VISIBLE SOLAR DISK ON AUGUST 25, AVERAGE SIZES. NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE AVERAGE. ... FLARE ACTIVITY WAS ON THE LOW LEVEL IN ALL DAYS. ...

... Paranal and La Silla general information and long term statistics of various parameters relevant for observational astronomy. on meteorology, telescope environment, atmospheric turbulence, and related topics (includes links to some other sites) . ... Databases for the Characterization of Astronomical Observatories Workshop La Laguna, Tenerife, Canary Islands, Spain; 22-23 June 2015 . ... Astroclimatology of Chajnantor . ... Photometry: Night Sky Quality at Mauna Kea , Cerro Pachon , CTIO and IAC . ...

... I.A.Dynnikov, Three-page approach to knot theory. ... Universal semigroup, Funktsional'nyi Analiz I Prilozhenija, 34 (2000), no.1, 29-40 (Russian); English translation in Functional Analysis and Its Appl. 34 (2000), no.1, 24-32. I.A.Dynnikov, Finitely presented groups and semigroups in knot theory. ... Math. 2000, no. ... English translation: Russian Math. ... A.Vershik, Numerical invariants of exponential groups, and a locally free approximation of braid groups (in Russian), Zapiski Nauchn. ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... Magnetic storms online . ... Geomagnetic activity forecast . ... August : 2015 . ... No magnetic storm is expected . From 2 August 2015 to 28 August 2015 the following magnetic storms and disturbances are expected: . August 10, 2015 geomagnetic storm of level G1 (minor) . August 28, 2015 geomagnetic disturbances . ... August 06, 2015 geomagnetic disturbances 2 August 2015 - 28 August 2015 . 01.08.2015 . ... Probability of a magnetic storm . ... Probability of a strong magnetic storm . ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . Books . ASP Conference Series . Monograph Publications . IAU Publications . Books of Note . ... Publications of the ASP (PASP) . ... Mercury Magazine . ... Order Mercury Issues . Mercury Advertising Rates . ... ASP E-mail Newsletters . ... Astronomy Beat . ... Mercury Magazine Contents . ... July/August 2001 . ... Surveying Our Home Galaxy . ... Annals of Astronomy, Clifford J. Cunningham . ...

... Extended Narrow-line Emission in the Bright Seyfert 1.5 Galaxy HE 2211-3903 Scharw chter, J. , Dopita, M.A., Zuther, J., Fischer, S., Komossa, S., Eckart, A. 2011, AJ, v. 142, Issue 2, August 2011, pp. ... The nearby QSO host I Zw 1: the stellar disk and adjacent objects Scharw chter, J. , Eckart, A., Pfalzner, S., Saviane, I., Zuther, J. 2007, A , v. 469, Issue 3, July III 2007, pp. ... Krips, M., Eckart, A., Neri, R., Zuther, J., Downes, D. Scharw chter, J. 2005, A , v. 439, Issue 1, pp. ...

The Interball-Tail KP archive is final. ... Select a day: . Data available since August 3, 1995) . ... DAY . ... Magnetic field (PRAM) Electron density and mean energy (ELECTRON) Ion density, velocity and temperature (CORALL) Energetic particle fluxes (DOK-2 and SKA-2) H+ and O+ fluxes (PROMICS) AKR intensity (AKR) Antisunward ion flux (VDP) Plasma wave amplitudes (MIF-M/PRAM) PC index (Ground-based) INTERBALL-TAIl orbit . ... Now data in all formats are available for 1995-2000) . GIF plot . ...