TITLE

High-Redshift Supernovae Reveal an Epoch When Cosmic Expansion Was Slowing Down

AUTHOR(S)
Schwarzschild, Bertram
PUB. DATE
June 2004
SOURCE
Physics Today;Jun2004, Vol. 57 Issue 6, p19
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Analyzes the type Ia supernovae discovered with the Hubble Space Telescope by a team led by Adam Riess of the Space Telescope Science Institute in Baltimore, Maryland. Overview of the brightness versus redshift for the type Ia supernovae; Role of high-z supernova in constraining cosmological parameters and for establishing evidence of earlier epoch; Aim of the Great Observatories Origins Deep Survey.
ACCESSION #
13275887

 

Related Articles

  • THE UNIVERSE ON HYPERDRIVE. Talcott, Richard // Astronomy;Feb2003, Vol. 31 Issue 2, p46 

    Presents observations about Type Ia supernovae. Consideration of thermonuclear runaway; Brightness of supernovae; Concept of dark energy.

  • SUPERNOVE ARE NOT ROUND, CONTINUED. Naeye, Robert // Sky & Telescope;May2005, Vol. 109 Issue 5, p22 

    Cites a research which found that jets may play an important role in supernovae formation. Suggestion that the core-collapse supernovae produce spherical objects; Method used by researchers to measure the polarization in the supernova's ejecta; Mechanism of the explosion.

  • Tycho's Supernova: The Culprit Found? Johnston, Lisa R. // Sky & Telescope;Feb2005, Vol. 109 Issue 2, p22 

    Reports on a study by Pilar Ruiz-Lapuente and colleagues from the University of Barcelona in Spain concerning the companion star that triggered Tycho's supernova. Measurement of the velocities of stars seen in the glowing supernova remnant; Identification of a Sun-like star in the right area...

  • Supernova in a Spiral Arm. MacRobert, Alan // Sky & Telescope;Apr2005, Vol. 109 Issue 4, p20 

    Describes the Supernova 2004dk, one of the 83 supernovas discovered in 2004 by the Katzman Automatic Imaging Telescope at Lick Observatory. Classification of the star as Type Ib or Ic through its spectrum; Description of the astral body as very hot and massive, nearly hydrogen-free Wolf-Rayet...

  • A stripped-down stellar core.  // Sky & Telescope;Apr98, Vol. 95 Issue 4, p24 

    Discloses that University of Wyoming researcher Steve B. Howell and his colleagues have found a worn-out stellar core bereft of its atmosphere by obtaining spectra of cataclysmic variable stars. Evolution of component stars in most binary systems; Amount of mass shed by the white dwarf's...

  • An outburst from a massive star 40?days before a supernova explosion. Ofek, E. O.; Sullivan, M.; Cenko, S. B.; Kasliwal, M. M.; Gal-Yam, A.; Kulkarni, S. R.; Arcavi, I.; Bildsten, L.; Bloom, J. S.; Horesh, A.; Howell, D. A.; Filippenko, A. V.; Laher, R.; Murray, D.; Nakar, E.; Nugent, P. E.; Silverman, J. M.; Shaviv, N. J.; Surace, J.; Yaron, O. // Nature;2/7/2013, Vol. 494 Issue 7435, p65 

    Some observations suggest that very massive stars experience extreme mass-loss episodes shortly before they explode as supernovae, as do several models. Establishing a causal connection between these mass-loss episodes and the final explosion would provide a novel way to study pre-supernova...

  • White dwarf is caught hurling its outer layers at its red giant companion. Day, Charles // Physics Today;Oct2006, Vol. 59 Issue 10, p17 

    This article discusses the observation of a nova called RS Ophiuchi. The observations, which span the electromagnetic spectrum from radio to x-ray, have revealed for the first time how much accreted matter is shed in a nova outburst. From the previous outbursts, astronomers identified RS...

  • Supernovae: Turning off the lights. de Grijs, Richard // Nature Physics;Aug2015, Vol. 11 Issue 8, p623 

    The article discusses research that recorded a timeline of observed changes in the appearance of complex systems of rings around the supernova1987A (SN1987A). It references a study published in "The Astrophysical Journal Letters" that made observations through the Hubble Space Telescope on the...

  • Evidence for an oscillation of the magnetic axis of the white dwarf in the polar DP Leonis. Beuermann, K.; Dreizler, S.; Hessman, F. V.; Schwope, A. D. // Astronomy & Astrophysics / Astronomie et Astrophysique;Feb2014, Vol. 562, p1 

    From 1979 to 2001, the magnetic axis of the white dwarf in the polar DP Leo slowly rotated by 50° in azimuth, possibly indicating a small asynchronism between the rotational and orbital periods of the magnetic white dwarf. Using the MONET/North telescope, we have obtained phase-resolved...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics