Výsledky vyhledávání

On the SN 1993J Radio Shell Structure

Autor: J.M. Marcaide, I. Martí-Vidal, E. Ros, A. Alberdi, J.C. Guirado, L. Lara, M.A. Pérez-Torres, K.W. Weiler

Publikováno v: International Astronomical Union Colloquium. 192:29-36

SummaryAn accurate measurement of the expansion deceleration of SN 1993J depends on how well the shell size and its emission structure are known. With the goal of determining the emission structure of the shell, we have developed a new approach, whic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3bed301d66c8d6b56185ec77d29654c3
https://doi.org/10.1017/s0252921100008964

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Low Frequency Radio Astronomy from the Moon

Autor: D.L. Jones, K.W. Weiler

Publikováno v: Highlights of Astronomy. 11:988-989

The radio sky at frequencies of several MHz and below is essentially unexplored with high angular resolution due to refraction and opacity in the Earth’s ionosphere. An interferometer array in space providing arcminute resolution images would allow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3072eee4969065fd63c58bd6bd4f7bfd
https://doi.org/10.1017/s1539299600019389

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A Proposal For Mapping The Sky At Deka-Hectometer Wavelengths: The LFSA

Autor: K.W. Weiler, B.K. Dennison, K.J. Johnston, R.S. Simon, J.H. Spencer, W.C. Erickson, M.L. Kaiser, H.V. Cane, M.D. Desch, L.M. Hammarstrom

Publikováno v: Symposium - International Astronomical Union. 133:483-486

The concept is developed for a scientific space mission to survey the entire sky and to image individual sources at frequencies between 1.5 and 26.3 MHz, a frequency range over which the Earth's ionosphere transmits poorly or not at all. The required

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72f9d6318dc33dff0a5ac2e83dc284c3
https://doi.org/10.1017/s0074180900140070

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Measurement of the Deflection of 9.602-GHz Radiation from 3C279 in the Solar Gravitational Field

Autor: K.W. Weiler, R.A. Sramek, G. A. Seielstad

Publikováno v: Physical Review Letters. 24:1373-1376

During its occultation by the sun in October 1969, the position of the radio source 3C279 was interferometrically monitored to determine the deviation of its 9.602-GHz radiation in the solar gravitational field. Rapid instrumental calibration and neg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5bf5da7cd6f585ba31888790b6162210
https://doi.org/10.1103/physrevlett.24.1373

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A Space Station Millimeter Facility

Autor: K.W. Weiler, B.K. Dennison, K.J. Johnston

Publikováno v: Space Optics for Astrophysics and Earth and Planetary Remote Sensing.

The design and use of a large millimeter facility for construction on the planned Space Station (the Space Station Millimeter Facility, SSMF) will be described. A facility consisting of a number of small antennas distributed over the structure of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0d62d3c84e6bc28ebeeb9341efae0759
https://doi.org/10.1364/soa.1988.wb21

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Supernovae at the highest angular resolution

Autor: Schuyler D. Van Dyk, K.W. Weiler, R.A. Sramek, N. Panagia, C.K. Lacey, M.J. Montes, J.M. Marcaide, W. H. G. Lewin, D.W. Fox, D. Pooley, A.V. Filippenko, C.Y. Peng

Publikováno v: NASA Astrophysics Data System

The study of supernovae (SNe) and their environments in host galaxies at the highest possible angular resolution in a number of wavelength regimes is providing vital clues to the nature of their progenitor stars. We are observing SNe in the radio usi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07f91eff4a80ca49af9d791cff9fe112
https://ui.adsabs.harvard.edu/#abs/2001IAUS..205..390V