Zobrazeno 1 - 10
of 42
pro vyhledávání: '"O. Vancura"'
Autor:
O. Vancura, Knox S. Long, Jon A. Morse, Patrick Hartigan, John C. Raymond, Richard J. Edgar, William P. Blair, Wilton T. Sanders
Publikováno v:
The Astrophysical Journal. 482:881-890
Ultraviolet emission lines in supernova remnants (SNRs) provide important clues to the shock velocities, densities, grain destruction, and thermal structure of the cooling regions in these objects. However, several of the brightest ultraviolet emissi
Autor:
Gerard A. Kriss, Arthur F. Davidsen, O. Vancura, Samuel T. Durrance, W. V. Dixon, C. W. Bowers, Knox S. Long, Paul D. Feldman, R. A. Kimble, Richard C. Henry, Henry C. Ferguson, Jeffrey W. Kruk, William P. Blair, H. W. Moos
Publikováno v:
Nature. 351:128-130
Sciama's hypothesis that the dark matter associated with galaxies, galaxy clusters, and the intergalactic medium consists of tau neutrinos of rest mass 28-30 eV whose decay generates ultraviolet photons of energy roughly 14-15 eV, has been tested usi
Publikováno v:
AIP Conference Proceedings.
We have searched the Einstein HRI images of the supernova remnant N49 for evidence of any point‐like x‐ray enhancement within the error box of the repeating gamma ray burst source GBS 0525‐66, the source of the 5 March 1979 and other bursts. Al
Publikováno v:
Scopus-Elsevier
Publikováno v:
The Astrophysical Journal. 457:244
Publikováno v:
The Astronomical Journal. 110:312
Publikováno v:
Scopus-Elsevier
We present an X-ray study of the Tycho supernova remnant utilizing archival data from the high-resolution imagers (HRIs) on Einstein and ROSAT, the low-energy imaging telescopes (LEITs) on EXOSAT, and spectral data from the Broad Band X-ray Telescope
Publikováno v:
The Astrophysical Journal. 431:188
We have constructed models that predict the dynamic evolution and infrared (IR) emission of grains behind nonradiative shock waves. We present a self-consistent treatment of the effect of grain destruction and heating on the ionization structure and
Publikováno v:
The Astrophysical Journal. 417:663
We have used the Voyager 1 and 2 Ultraviolet Spectrometers to study the far-ultraviolet emissions from different types of shock waves in the Cygnus Loop. In the southeast and northern parts of the supernova remnant (SNR), we have measured the O(VI) l
Autor:
Richard C. Henry, W. Van Dyke Dixon, Knox S. Long, H. Warren Moos, Jeffrey W. Kruk, Randy A. Kimble, Gerard A. Kriss, Samuel T. Durrance, Paul D. Feldman, Charles W. Bowers, O. Vancura, William P. Blair, Henry C. Ferguson, Arthur F. Davidsen
Publikováno v:
The Astrophysical Journal. 404:663
During the Astro-l mission in 1990 December, the Hopkins Ultraviolet Telescope (HUT) was used to observe the extreme ultraviolet spectrum (415-912 A) of the hot DA white dwarf GI91-B2B. Absorption by neutral helium shortward of the 504 A He I absorpt