HubbleSite - Supernova Blast Begins Taking Shape - 1/14/1997 Hubble Reveals Structure of Supernova 1987a Explosion Debris This Hubble picture shows the supernova, designated 1987A, and its neighborhood. http://hubblesite.org/newscenter/newsdesk/archive/releases/1997/03/
Extractions: View all images Though the brightest supernova in four centuries lit up the southern sky almost exactly 10 years ago on Feb. 23, 1987, astronomers have waited a decade for the ballooning fireball to become large enough ? about one-sixth of a light-year ? to be resolved from Earth's orbit with the Hubble telescope. Hubble's sharp "eyes" have resolved a dumbbell-shaped structure ? one-tenth of a light-year long ? that consists of two blobs of debris expanding apart at nearly 6 million mph from each other. This Hubble picture shows the supernova, designated 1987A, and its neighborhood. The four frames follow the evolution of the supernova debris. Read the full press release text Credit: Chun Shing Jason Pun ( NASA/GSFC ), Robert P. Kirshner ( Harvard-Smithsonian Center for Astrophysics ), and NASA Find more news releases:
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Extractions: Fast Cycle Battery Charger And Pocket Peaker Glo-Charger By: Glenn R. Viveiros If you are looking for a good, scratch that, GREAT pair of charger's for your R/C needs then look no further FMA has the answer. We test the SuperNova Fast Cycle battery charger for stick packs, receiver packs and transmitter packs; it works with Ni-cad and Nimh batteries. Also from FMA Direct is the Pocket Peaker Glo-Charger, connect your favorite charger to this small wonder via the dummy glo plug in its base and hit the charge button, in twenty minutes your back in business. First off we'll start with the SuperNova, it packs quite a lot of punch in a small package. This is a d.c. powered only charger so if you want to use it at home with a.c. power you will have to use an a.c. to d.c. power converter. The charger has some pretty good instructions and you will need to purchase or make some adapters to be able to charge your style of battery pack. I also got the recommended accessories for the charger, the Versatile Adapter and its 9" power connector wire. These will allow it to interface with most popular radio equipment. Charger with the plastic stand and all the instructions.
Extractions: The general picture for a Type II supernova goes something like this. When the nuclear power source at the center or core of a star is exhausted, the core collapses. In less than a second, a neutron star (or black hole , if the star is extremely massive) is formed. As in-falling matter crashes down on the neutron star, temperatures rise to billions of degrees Celsius. Within hours, a catastrophic explosion occurs, and all but the central neutron star is blown away at speeds in excess of 50 million kilometers per hour. A thermonuclear shock wave races through the now expanding stellar debris, fusing lighter elements into heavier ones and producing a brilliant visual outburst that can be as intense as the light of several billion Suns!
Supernova 1987A This was the first nearby supernova in the last 3 centuries, The supernova is in the center. The two bright stars are just in the field of view and http://csep10.phys.utk.edu/guidry/violence/sn87a.html
Extractions: In 1987 a supernova (designated by astronomers) was observed in a nearby galaxy called the Large Magellanic Cloud . This was the first "nearby" supernova in the last 3 centuries, and for the first time astronomers not only observed the light show, but also detected 19 of the elusive neutrinos (the detectors observed electron anti-neutrinos, to be more precise) produced by the collapse of the star's core. The burst of neutrinos preceded the first sighting of the supernova's light by about 3 hours, in agreement with the expectations of current supernova theory. It is estimated that for an instant in 1987 on the earth the neutrino luminosity of SN1987A was as large as the visible-light luminosity of the entire universe . The adjacent figure is a 1994 Hubble Space Telescope image of the region surrounding SN1987A. The supernova is in the center. The two bright stars are just in the field of view and are not associated with the supernova. The bright yellow ring is thought to be gas and dust heated by the supernova (the expanding shell of the explosion itself that will produce the supernova remnant is still too small to be seen in this photograph). The two large rings are not yet completely understood, though they appear to be associated with the supernova. Click here for more discussion of the mysterious rings.
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Image Ssc2005-14c This remnant marks the most recent supernova in our Milky Way galaxy, and is one of the most studied objects in the sky. Each Great Observatory highlights http://www.spitzer.caltech.edu/Media/releases/ssc2005-14/ssc2005-14c.shtml
Extractions: Credit: NASA/JPL-Caltech/O. Krause (Steward Observatory) This stunning false-color picture shows off the many sides of the supernova remnant Cassiopeia A. It is made up of images taken by three of NASA's Great Observatories, using three different wavebands of light. Infrared data from the Spitzer Space Telescope are colored red; visible data from the Hubble Space Telescope are yellow; and X-ray data from the Chandra X-ray Observatory are green and blue. Located 10,000 light-years away in the northern constellation Cassiopeia, Cassiopeia A is the remnant of a once massive star that died in a violent supernova explosion 325 years ago. It consists of a dead star, called a neutron star, and a surrounding shell of material that was blasted off as the star died. This remnant marks the most recent supernova in our Milky Way galaxy, and is one of the most studied objects in the sky. Each Great Observatory highlights different characteristics of this celestial orb. While Spitzer reveals warm dust in the outer shell about a few hundred degrees Kelvin (80 degrees Fahrenheit) in temperature, Hubble sees the delicate filamentary structures of hot gases about 10,000 degrees Kelvin (18,000 degrees Fahrenheit). Chandra probes unimaginably hot gases, up to about 10 million degrees Kelvin (18 million degrees Fahrenheit). These extremely hot gases were created when ejected material from Cassiopeia A smashed into surrounding gas and dust. Chandra can also see Cassiopeia A's neutron star (turquoise dot at center of shell).
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Chaco: 1054 Supernova Petrograph Our sun is too small to create a supernova. The star that created the Crab The star that caused the 1054 supernova is about 4000 light years away, http://www.astronomy.pomona.edu/archeo/outside/chaco/nebula.html
Extractions: photo by Ron Lussier Dan Greening The Anasazi residents of Chaco Canyon were attentive to the movements of the heavens, that much is clear. The famous Sun Dagger on Fajada Butte in the center of Chaco Canyon is a solar calendar that heralds the winter solstice when a band of sunlight passing through between two slabs intersects the center of a spiral. A square of light floods a notch in the wall of Casa Rinconada's Great Kiva on the summer solstice, and locations marked within the Great Kiva are thought by some to create a simple stellar observatory. There are many similar phenomena throughout Chaco Canyon and San Juan basin to the northwest. Sometimes a correlation suggests a dubious conclusion, another might seem obvious. Regardless of the validity of any particular claim, there is little doubt that the Chacoans cared about what happened above them, because there are so many correlations. If you look through a telescope tonight, in the constellation Taurus, you will see a formation we call the "Crab Nebula." This cloudy, glowing mass comprises about 90% of the remains of a supernova that first appeared here around July 4, 1054.
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Supernova 1987A The story of Supernova 1987 A. Ocurred in Large Magellanic Cloud, 170 thousand light The remnant from Supernova 1987A has been expanding since 1987. http://zebu.uoregon.edu/~soper/StarDeath/sn1987a.html
Extractions: Ocurred in Large Magellanic Cloud, 170 thousand light years from us. Progenitor star: Sanduleak -69 o 202, a blue supergiant. Discovery At the core of the theory, so to speak, is the production of vast numbers of neutrinos. Neutrino detectors available at the time. Prediction: each detector should see 10 or so neutrinos from SN 1987A in a space of about 10 seconds. Results. Timing (times in Universal Time) 10:30, 23 February Some 20 hours later, Ian Shelton's discovery. Conclusion: One surprise: It was thought that type II supernovae came from red supergiant stars, but the star SK -69 202 was a blue supergiant (~ 20 times smaller than a red supergiant.)
Extractions: Mullard Radio Astronomy Observatory Cavendish Laboratory , Madingley Road, Cambridge CB3 0HE, UNITED KINGDOM The documentation for the catalogue. The summary listings for all 231 SNRs. To download a version of the catalogue for printing. The detailed listings for all 231 SNRs. The abbreviations used in the detailed listings for journals and telescopes. Frames based browsing of the catalogue. A list of other names for Galactic SNRs. A feedback comments form. Please cite this catalogue as: as this paper entitled ``Galactic supernova remnants: an updated catalogue and some statistics'' includes the summary data as an Appendix. This paper also discusses various statistical properties of Galactic SNRs. In addition, if you make use of the detailed version of the catalogue, then please also cite: Green D.A., 2004, `A Catalogue of Galactic Supernova Remnants (2004 January version)' , Mullard Radio Astronomy Observatory, Cavendish Laboratory, Cambridge, United Kingdom (available at "http://www.mrao.cam.ac.uk/surveys/snrs/"
Supernova (2000/I) Supernova Cast, Crew, Reviews, Plot Summary, Comments, Discussion, Taglines, Trailers, Posters, Photos, Showtimes, Link to Official Site, Fan Sites. http://www.imdb.com/title/tt0134983/
Extractions: IMDbPro.com free trial Showing page 1 of 32 main details combined details full cast and crew company credits user comments ... goofs soundtrack listing crazy credits alternate versions movie connections merchandising links release dates ... technical specs laserdisc details DVD details literature listings news articles taglines ... photo gallery on tv, schedule links showtimes official site miscellaneous photographs sound clip(s) video clip(s) Your Vote 1 (awful) 10 (excellent) You need to be a registered user of the IMDb to rate a movie
IT Conversations: Jonathan Schwartz - Supernova 2005 In the openening session from Supernova 2005, host Kevin Werbach interviews Jonathan Schwartz, This program is from the Supernova 2005 series. http://www.itconversations.com/shows/detail588.html
Extractions: Play now: Download MP3 Help with Listening Link to it: Permalink Create a Clip or Excerpt [runtime: 00:39:50, 18.2 mb, recorded 2005-06-21] In the openening session from Supernova 2005, host Kevin Werbach interviews Jonathan Schwartz, president of Sun Microsystems. They cover a lot of ground, but the dominant theme is the ways in which technology and control of technolgy are decentralizing: moving into the hands of users. As Kevin suggests, consider a world in which one billion people will have camera-enabled mobile devices. Innovation certainly isn't dead, says Jonathan. As computing continues to get cheaper (a trend that began when employees demanded PCs from formerly centralized IT departments), decision making also migrates to lower levels within organizations. It's massive decentralization. It's even having an effect on media and entertainment, as users demand that they be able to listen and watch what they want and when they want. It wouldn't be an interview with Jonathan if the subject of blogging by executives of public companies didn't come up. He describes what he's learned about public and internal blogging Are they really separate? and the importance of openness and transparency, even in public, or perhaps particulary in public.
Supernova Remnants Supernova remnants are the dramatic objects produced by the violent explosion At Penn State, we have been observing the Xrays from supernova remnants http://www.astro.psu.edu/xray/snr/snr.html
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