O'Reilly Radar > Supernova 2005: Attention Great post at O Reilly Radar about Linda Stone s talk at Supernova 2005. Linda Stone at Supernova Continuous Partial Attention from Get Real http://radar.oreilly.com/archives/2005/06/supernova_2005_2.html
Extractions: By nat on June 22, 2005 You need to read this. Linda Stone just gave a fantastic address on what we pay attention to and what drives human use of software. She is the coup of the conference: if I could grab any of the conference speakers for our conferences, it would be herI've been trying for years but her schedule has never lined up with ours. Here are my near-verbatim notes from her talk: Pop quiz. It's okay to answer "yes" to a question even if you're contradicting an earlier answer: In 1997 I coined the phrase "continuous partial attention". For almost two decades, continuous partial attention has been a way of life to cope and keep up with responsibilities and relationships. We've stretched our attention bandwidth to upper limits. We think that if tech has a lot of bandwidth then we do, too. With continuous partial attention we keep the top level item in focus and scan the periphery in case something more important emerges. Continuous partial attention is motivated by a desire not to miss opportunities. We want to ensure our place as a live node on the network, we feel alive when we're connected. To be busy and to be connected is to be alive.
Supernova animation of supernova explosion. One of the most energetic explosive events known is a supernova. These occur at the end of a star s lifetime, http://legacy.gsfc.nasa.gov/docs/snr.html
Extractions: NASA Homepage ... APOD One of the most energetic explosive events known is a supernova. These occur at the end of a star's lifetime, when its nuclear fuel is exhausted and it is no longer supported by the release of nuclear energy. If the star is particularly massive, then its core will collapse and in so doing will release a huge amount of energy. This will cause a blast wave that ejects the star's envelope into interstellar space. The result of the collapse may be, in some cases, a rapidly rotating neutron star that can be observed many years later as a radio pulsar. While many supernovae have been seen in nearby galaxies, they are relatively rare events in our own galaxy. The last to be seen was Kepler's star in 1604. This remnant has been studied by many X-ray astronomy satellites, including ROSAT . There are, however, many remnants of Supernovae explosions in our galaxy, that are seen as X-ray shell like structures caused by the shock wave propagating out into the interstellar medium. Another famous remnant is the Crab Nebula which exploded in 1054. In this case a pulsar is seen which rotates 30 times a second and emits a rotating beam of X-rays (like a lighthouse). Another dramatic supernova remnant is the
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Supernova Cosmology Project Observing Distant Type Ia Supernova with the ESO VLT, C. Lidman, An explanation of the Supernova Cosmology Project and our current results is given in http://supernova.lbl.gov/
Extractions: Restframe I -band Hubble Diagram for Type Ia Supernovae up to Redshift z ~ 0.5, S. Nobili et al., astro-ph/0504139 Observing Distant Type Ia Supernova with the ESO VLT , C. Lidman, ESO Messenger No 118, Dec. 2004 Spectroscopic confirmation of high-redshift supernovae with the ESO VLT C. Lidman et al. , Astronomy and Astrophysics 430:843-851, 2005 and also astro-ph/0410506 Version with full-resolution finding charts: pdf (8 MB), ps Spectroscopic Observations and Analysis of the Peculiar SN 1999aa G. Garavini , et al., Astronomical Journal 128:387-404, July 2004 , also available at astro-ph/0404393 Full-resolution figures New Constraints on Omega_M, Omega_Lambda, and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST R. A. Knop et al, ApJ 598:102-137, 2003 November 20 [ pdf] Additional Information: Data tables, figures, etc.
Extractions: BACK INDEX NEXT Supernova Remnant the Cygnus Loop HUBBLE'S CLOSE-UP VIEW OF A SHOCKWAVE FROM A STELLAR EXPLOSION This image shows a small portion of a nebula called the "Cygnus Loop." Covering a region on the sky six times the diameter of the full Moon, the Cygnus Loop is actually the expanding blastwave from a stellar cataclysm - a supernova explosion - which occurred about 15,000 years ago. In this image the supernova blast wave, which is moving from left to right across the field of view, has recently hit a cloud of denser than average interstellar gas. This collision drives shock waves into the cloud that heats interstellar gas, causing it to glow. Just as the microscope revolutionized the study of the human body by revealing the workings of cells, the Hubble Space Telescope is offering astronomers an unprecedented look at fine structure within these shock fronts. Astronomers have been performing calculations of what should go on behind shock fronts for about the last 20 years, but detailed observations have not been possible until Hubble. This image was taken with Hubble's Wide Field and Planetary Camera 2 (WFPC2). The color is produced by composite of three different images. Blue shows emission from "doubly ionized" oxygen atoms (atoms that have had two electrons stripped away) produced by the heat behind the shock front. Red shows light given off by "singly ionized" sulfur atoms (sulfur atoms that are missing a single electron). This sulfur emission arises well behind the shock front, in gas that has had a chance to cool since the passage of the shock. Green shows light emitted by hydrogen atoms. Much of the hydrogen emission comes from an extremely thin zone (only several times the distance between the Sun and Earth) immediately behind the shock front itself. These thin regions appear as sharp, green, filaments in the image.
Supernova Remnants M SNR Click to go to the only supernova remnant in Messier s catalog, When a star explodes in a supernova explosion, it depends on its type what http://www.seds.org/messier/snr.html
Extractions: When a star explodes in a supernova explosion, it depends on its type what exactly remains. But anyway, the offbursted gaseous remainders will form a rapidly expanding and slowly fading cloud, mixing with the interstellar matter which is "swept up" when the shell expands, and is a domain of an extreme kind of physics. These nebulae are called supernova remnants (SNRs). Depending on the type of the supernova, there may also be a central compact remnant in the form of a neutron star. According to current theory, two different mechanisms produce supernovae: First, stars considerably more massive than our Sun can most probably not evolve quietly into an end state as a white dwarf. When coming to age, these massive stars explode in a most violent detonation which flashes up at a luminosity of up to 10 billion times that of the sun, called supernova (of type II, or Ib or Ic), and ejecting the very greatest part of the stellar matter in a violently expanding shell. These explosions are thought to leave a compact remnant, such as a neutron star. Aternatively, infalling matter on a white dwarf star can cause it to explode as a supernova of type Ia; these events do probably not leave a stellar remnant. The classification of supernovae in types was introduced by Rudolph Minkowski ( Minkowski 1941 ) on the grounds of their spectra: Type I supernovae show no hydrogen lines in their spectra, whereas these lines are present in those of Type II. Later these types were subdivided, again based on their spectra. For Type I, subtype Ia shows no Helium in spectrum, characteristic absorption features, and in its later phase, emission lines from elements in the iron group. Type Ib shows helium lines, type Ic no helium but in its later phase, oxygen and calcium lines. Supernovae of types Ib and Ic are thought to originate from massive progenitor stars which have been stripped off their outer layers by companion stars, and thus lost their hydrogene and for Ic, also their helium.
Supernovae And Supernova Remnants: Reply To Jonathan Sarfati Supernovae, Supernova Remnants and Young Earth Creationism FAQ Indeed, since I originally wrote the supernova FAQ, the astronomical literature is http://www.talkorigins.org/faqs/supernova/sarfati.html
Extractions: [Last updated: September 7, 2003] Jonathan Sarfati of Answers in Genesis AiG ) wrote a brief reply to Dave Moore's Supernovae, Supernova Remnants and Young Earth Creationism FAQ which debunked a Sarfati article on supernova remnants and the Keith Davies article on which it is based. This article is Mr. Moore's reply to Dr. Sarfati. Mr. Moore reports that he has posted a copy of his reply to TheologyWeb where it got deleted . Dr. Sarfati posts at TheologyWeb under the screen name "Socrates" with the habit of referring to himself in the third person. r. Sarfati says, This seems to come from blustery and verbose article on the essentially atheistic talk.origins site from a person called Moore who admits that he lacks qualifications in astronomy. Much TalkOrigins bilge is written by people unqualified in the areas they're talking about and it shows! Keith Davies, who research I acknowledged using, and I are well aware of this Moore article, and I understand that he is preparing a detailed response. Neither does Davies (have qualifications in astronomy), who appears to be a teacher [
Supernovae, Supernova Remnants And Young Earth Creationism FAQ One of their approaches deals with supernova remnants, the remains of the There are not enough supernova remnants observed in our Galaxy to support an http://www.talkorigins.org/faqs/supernova/
Extractions: Credits ver the course of the last couple of centuries, scientists have amassed large amounts of evidence which have led them to conclude that the Universe is about 12-14 billion years old and was formed in the primordial event that scientists now call the Big Bang. However, in the last fifty years, an offshoot of Fundamentalist Christianity has grown up (mainly in, but not limited to, the US) called Young Earth Creationism. Adherents, called Young Earth Creationists (
Supernova - Wikipedia, The Free Encyclopedia In either case, the resulting supernova explosion expels much or all of the A Type Ia supernova releases the highest amounts of energy amongst all known http://en.wikipedia.org/wiki/Supernova
Extractions: Remnant of Kepler's Supernova, SN 1604 Supernovae refer to several types of stellar explosions that produce extremely bright objects made of plasma that decline to invisibility over weeks or months. There are two possible routes to this end: either a massive star may cease to generate fusion energy in its core and collapse inward under the force of its own gravity , or a white dwarf star may accumulate material from a companion star until it reaches a critical mass and undergoes a thermonuclear explosion. In either case, the resulting supernova explosion expels much or all of the stellar material with great force. The explosion drives a blast wave into the surrounding space , forming a supernova remnant . One famous example of this process is the remnant of SN 1604 , shown at right. Supernova explosions are the main source of all the elements heavier than oxygen , and they are the only source of many important elements. For example, all the calcium in our bones and all the iron in our hemoglobin were synthesized in a supernova explosion, billions of years ago. Supernovae inject these heavy elements into the
Multimedia Gallery | Brought To You By SpaceRef Hubble Spies Most Distant Supernova Ever Seen, Hubble Spies Most Distant Supernova Chandra links pulsar to historic supernova, Chandra links pulsar to http://www.spaceref.com/tools/imgcathp.html?cid=35
NRL SNe/SNR/LFRA Home Page Supernovae/Gammaray Bursters/Supernova Remnants/ The study of supernova remnants (SNRs), particularly at long radio wavelengths. http://rsd-www.nrl.navy.mil/7213/weiler/
Extractions: This work at NRL is devoted to the use and development of the techniques of interferometry for astronomical observations and for remote sensing of environmental and other national problems. Several components of this work are: The investigation of supernovae (SNe) and Gamma-ray Bursters (GRBs) , particularly at radio wavelengths. The study of supernova remnants (SNRs) , particularly at long radio wavelengths. The use and development of Wide Field Imaging (WFI) techniques on high performance computers for low frequency radio interferometric mapping of large fields with high source densities. The Low Frequency Radio Astronomy (LFRA) study of astronomical objects and the development of new instruments and techniques for and The planning, design, and construction, together with ASTRON in The Netherlands and MIT/Haystack Observatory in Massachusetts, of the Low Frequency Array LOFAR
List Of Supernova Pages On The WWW A comprehensive, categorized list of supernova and supernova remnant web pages This is a list of WWW pages related to supernovae and supernova remnants. http://rsd-www.nrl.navy.mil/7212/montes/sne.html
Extractions: Please read the following notice before continuing. General Links Catalogs Research Groups Individual Researchers ... Search Engines This is a list of WWW pages related to supernovae and supernova remnants . Please send me information on other pages I can add to this list. I frequently check the other lists of SN pages on the WWW , but not always, so you should check there, too. Supernova images can be found on several of the listed pages. Currently I am not cataloguing them separately since they are easily found in many of the links below. An excellent resource for finding supernova images and links to images is David Bishop's Bright Supernovae pages NEW LINK s, NEW URL s, and apparently DEAD LINK s are marked obviously. I'll probably keep the NEW designation on for a few weeks. DEAD LINK s will probably be removed after a few weeks. I frequently check the aliveness of these links. If you find one that is dead, please send me mail.
Supernova Images - Best Of Color supernova images. This is an RGB color image of Supernova 2002bo in NGC 3190 in the Virgo cluster of galaxies. Taken on February 13, 2002 Credit http://www.supernovae.net/snimages/best_img.html
Extractions: Supernova Gallery The purpose of the Bright Supernovae web pages is to provide a place where people can find reference images of Supernovae. It was designed as a quick reference so that amateur and professional astronomers can easily verify their observations and find out "what's up". At least that's how it started. Now I'm getting several hundred hits a day, and get showered with images when a new supernova is discovered Occasionally, a really good images passes by. When this happens, I usually put a "wow" comment on the Latest changes page but otherwise, say nothing. For some time now I've been asked to create a "best of" page, where I index the best of the images I've gotten over the years.
Latest Supernovae A list of the latest Supernovae with reference images. http://www.supernovae.net/supernova.html
Extractions: over mag 17.0 Name Mag Type Ia Ia II Ia unk Ia II Ia II II unk Ib unk IIP Ia Ic Ia II Ia II II II Interested in starting a supernova seach?. Please e-mail me. A long time ago, in a galaxy far far away, a star exploded. This star exploded so violently that for a few weeks the star outshone its parent galaxy. This type of explosion is called a Supernova . The last one in our galaxy was 400 years ago, making us about 300 years overdue for the next one. On this web page you will find a list of the currently observable supernovae, along with information on their location, reference images, and their last reported brightness. Most of the supernova information found on this page comes from IAU Circulars and occasionally more data can be found on IAU 's List of Recent Supernovae web page. Information on the current brightness and much of the background information is provided by VSNet . These web pages have brought you the latest in supernovae data and images since April 1997. New discoveries : For the 3rd time, Robert Evans has discovered a supernova (
Supernova 2005 - Supernova 2005 Weblog This is the official Weblog of the Supernova 2005 conference Conference News Sessions Workshops Markets and Conversations Connected Work Communications http://blog.supernova2005.com/
Extractions: About Supernova Register Community Connection Weblog ... Contact Us Links Program Overview Sessions Workshops Special Events ... Syndicate (RSS) Supernova is more than just a conference. The physical gathering in San Francisco will be just one element of an interactive, networked community. Using cutting-edge online community tools, we facilitate a parallel virtual event that extends Supernova in time, space, and participation. Entry Permalink Trackbacks : 1 Last Trackback: 03/24/2005 05:56 PM
Space Station Supernova Space Station Supernova. Next week, sky watchers in many US cities can see the space Supernovastyle apparitions are those that begin high in the sky, http://science.nasa.gov/headlines/y2002/28aug_sunrise.htm
Extractions: Listen to this story via streaming audio , a downloadable file , or get help August 28, 2002: The International Space Station (ISS) had just swung around the night side of Earth when astronaut Peggy Whitson looked out the window. The planet below was dark, but Earth's limb was glowing. "It was a thin, bright band of lightat first a deep royal blue, followed by the addition of red and orange," she recalled. "The rays of light seemed to be wrapping their fingers around the planet." Whitson narrowed her eyes when the Sun finally popped over the distant horizon. It was awfully bright. The station itself, moments earlier dark except for a few glowing windows, lit up from stem to stern reflecting the intense sunshine. What a sunrise! Right : Astronauts onboard the space shuttle Atlantis captured this picture of a sunrise from low-Earth orbit on May 29, 2000. [ more Sign up for EXPRESS SCIENCE NEWS delivery A few hundred kilometers below the space station, sky watchers on Earth saw something nearly as wonderful: a bright star materializing like a supernova in the predawn sky. That's what the ISS looks like (from the ground) when it's hit by rays from the morning Sun. It happens often enough, but most people have never seen it because they don't know when to look.
Beat SuperNova - The Beat Generation Beat SuperNova. last update 14th july 2002. an absolutely shit kicking list. since september 1997. Sign My Guestbook View My Guestbook http://www.gpnet.it/rasa/thebeats.htm
Extractions: Sign My Guestbook View My Guestbook im grateful if u sign the guest book including yr email too Carl Adkins Willie Loco Alexander [is a massachusets based songwriter who released an early independent 45(mid 70's) called-kerouac] Donald Allen [The Evergreen Review, editor, poet, Grey Fox Press] Steve Allen [he played piano on some of Kerouac's recordings, steve allen was the host of an early (50's) television talk show...he mixed interviews and comedy much like the current late night programs..he took a liking to kerouac and had him on his show...kerouac would read and allen would accompany him on piano..they also did the hanover? recording...i believe allen also accompanied kerouac live in some clubs at the time...allen has always spoken well of kerouac and i believe he had an actual fondness for him...he is still alive today, has written many books and many songs, but is somewhat forgotten] David Amram [helped Jack with some of his first jazz poetry readings - website at www.davidamram.com
Extractions: View all images The Hubble telescope has obtained the best images yet of a mysterious mirror-imaged pair of rings of glowing gas encircling the site of the stellar explosion called supernova 1987A. One possibility for these "hula hoops" of gas is that the two rings might be caused by a high-energy beam of radiation that is sweeping across the gas, like a searchlight sweeping across clouds. Though all of the rings appear inclined to our view (so that they appear to intersect), they are probably in three different planes. The small, bright ring lies in a plane containing the supernova; one larger ring lies in front of and the other behind the smallest one. Read the full press release text Credit: Dr. Christopher Burrows, ESA STScI and NASA Find more news releases:
