Výsledky vyhledávání - "D. N. Matsakis"

Secular Motions of Extragalactic Radio-Sources and the Stability of the Radio Reference Frame

Autor: T. M. Eubanks, Sergei A. Klioner, Dennis D. McCarthy, J. O. Martin, T. A. Herring, D. N. Matsakis, Brent A. Archinal, F. J. Josties, K. A. Kingham

Publikováno v: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry ISBN: 9780792334439

The best current approximation to an inertial reference frame is provided by Very Long Baseline Interferometry (VLBI) observations of extragalactic radio sources with red shifts (z) up to 3.8. The stability of the resulting reference frame directly d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23acbccb16887b5edc5431ecdd3d15d2
https://doi.org/10.1007/978-94-011-0069-4_45

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Daily observations of compact radio sources at 2.7 and 8.1 GHz - 1979-1987

Autor: D. N. Matsakis, K. J. Johnston, E. B. Waltman, R. L. Fiedler, F. J. Josties, D. R. Florkowski, D. D. McCarthy, J. H. Spencer

Publikováno v: The Astrophysical Journal Supplement Series. 77:379

2.7 and 8.1 GHz radio light curves are presented for 46 compact radio sources observed with the Green Bank interferometer during the period 1979-1987. Flux densities for the period 1979-1985 were reported in a previous paper. The flux densities repor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f5fe57f38b816b4fd6f1a87987996e80
https://doi.org/10.1086/191609

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THREE GAS CLUMPS NEAR THE EDGE OF THE VISIBLE ORION NEBULA

Autor: Andrew I. Harris, D. N. Matsakis, P. Palmer

Publikováno v: Annals of the New York Academy of Sciences. 395:210-215

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4014717ffdced72d275f636f6a7a201a
https://doi.org/10.1111/j.1749-6632.1982.tb43396.x

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Daily Radio Frequency Observations of Selected Objects

Autor: B. J. Geldzahler, K. J. Johnston, J. H. Spencer, E. B. Waltman, W. J. Klepczynski, P. E. Angerhofer, D. R. Florkowski, D.D. McCarthy, D. N. Matsakis

Publikováno v: Symposium - International Astronomical Union. 110:179-180

In Table I we present the list of 38 celestial objects that have been observed since January 1978 at 2.7 and 8.1 GHz with the Green Bank interferometer. The sources fall naturally into three categories: radio stars, possibly Galactic sources, and ext

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c29a73eea0a2e9be151b71f04afadbdf
https://doi.org/10.1017/s0074180900077998

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The September 1982 Radio Outburst of CYG X-3

Autor: B. J. Geldzahler, K. J. Johnston, J. H. Spencer, W. J. Klepczynski, F. J. Josties, P. E. Angerhofer, D. R. Florkowski, D.D. McCarthy, D. N. Matsakis, R. M. Hjellming

Publikováno v: Symposium - International Astronomical Union. 110:281-282

Cyg X-3 underwent a series of giant radio outbursts beginning on September 28, 1982 (Geldzahler et al. 1983). The flux densities at 2.7 and 8.1 GHz (11.1, 3.71 cm respectively, see Figure 1) were measured with the 2.4 km baseline of the Green Bank in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e4fd384ba51dc07f907add2726f13ea
https://doi.org/10.1017/s0074180900078268

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The 1982 September radio outburst of Cygnus X-3 - Evidence for jetlike emission expanding at not less than about 0.35 C

Autor: W. J. Klepczynski, P. E. Angerhofer, D. D. McCarthy, D. N. Matsakis, Robert M. Hjellming, K. J. Johnston, F. J. Josties, D. R. Florkowski, J. H. Spencer, B. J. Geldzahler

Publikováno v: The Astrophysical Journal. 273:L65

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6312e9da50ec466bdfe7d0d536c32d32
https://doi.org/10.1086/184131

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Daily observations of compact extragalactic radio sources at 2695 and 8085 MHz, 1979-1985

Autor: F. J. Josties, D. R. Florkowski, W. J. Klepczynski, J. H. Spencer, E. B. Waltman, K. J. Johnston, P. E. Angerhofer, R. L. Fiedler, D. N. Matsakis, D. D. McCarthy

Publikováno v: The Astrophysical Journal Supplement Series. 65:319

Radio observations of 33 compact extragalactic sources, obtained at 2.695 and 8.085 GHz using the Green Bank interferometer as part of a regular monitoring program during 1979-1985, are reported. The calibration and data-analysis procedures are descr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ae16aff13e86983e986090844a7f191
https://doi.org/10.1086/191228

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Observations of ammonia in selected galactic regions

Autor: M. F. Chui, D. N. Matsakis, Philip R. Schwartz, J. M. Bologna, J. A. Waak, A. C. Cheung

Publikováno v: The Astrophysical Journal. 218:671

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b4130f513f443f885897d689359084e
https://doi.org/10.1086/155724

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Radio continuum measurements of compact H II regions and other sources

Autor: T. Sato, B. Zuckerman, D. N. Matsakis, N. J. Evans

Publikováno v: The Astronomical Journal. 81:172

Results are reported for measurements of the flux densities of 33 sources at wavelengths of 13, 4, and 2 cm, which were conducted using the NASA/JPL Deep Space Network 64-m antenna at Goldstone, Calif. Besides compact H II regions, the sources includ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a3b3ecb74daf8913b6f04c74ec6f76f
https://doi.org/10.1086/111871

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