Výsledky vyhledávání - "V. I. Altunin"

Hydraulic Resistance of Corrugated Metal Culvert Pipes with Elevated Abrasive Resistance

Autor: V. I. Altunin, A. V. Burlachenko, O. N. Chernykh

Publikováno v: Power Technology and Engineering. 50:385-390

The paper puts forwards some results of studies on hydraulic resistance in a corrugated metal pipe with helical corrugation and smooth invert trough. Recommendations are given for calculating the roughness coefficient for pressure or free-surface wat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a16f84c40f7ccc64dcdbaf3c1b7aa63
https://doi.org/10.1007/s10749-016-0718-3

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Hydraulic Resistance of a Helially Corrugated Metal Pipe Culvert

Autor: O. N. Chernykh, V. I. Altunin

Publikováno v: Power Technology and Engineering. 50:125-129

Results are presented of experimental hydraulic studies of a model of a helically corrugated metal pipe culvert. Hydraulic resistance values are considered for water moving under free-flow and surcharged conditions. The influence of pipe slope and pi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5fcaabf93dbb5b46c23a4b29bb473c7
https://doi.org/10.1007/s10749-016-0672-0

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Giant Pulses from PSR B1937+21 with Widths ≤15 Nanoseconds and \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $T_{b}\geq 5\times 10^{39}$ \end{document} K, the Highest Brightness Temperature Observed in the Universe

Autor: Norbert Bartel, V. A. Soglasnov, Wayne Cannon, V. I. Altunin, A. Yu. Novikov, M. V. Popov, V. I. Kondratiev

Publikováno v: The Astrophysical Journal. 616:439-451

Giant radio pulses of the millisecond pulsar B1937+21 were recorded with the S2 VLBI system at 1.65 GHz with NASA/JPL's 70-m radio telescope at Tidbinbilla, Australia. These pulses have been observed as strong as 65000 Jy with widths = 5 x 10^39 K, t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27a7dd2a2e0c3253c5055d29af04f998
https://doi.org/10.1086/424908

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INTERNATIONAL LOW-FREQUENCY VERY-LONG-BASELINE INTERFEROMETRY NETWORK PROJECT MILESTONES

Publikováno v: Astronomical & Astrophysical Transactions. 22:743-752

The low-frequency very-long-baseline interferometry network (LFVN) project was started in 1996, having the purpose to arrange the international very-long-baseline interferometry (VLBI) cooperation with participation of former Soviet Union radio teles

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00bf66dcd954c4e9a6c773405be57def
https://doi.org/10.1080/10556790310001609205

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SN 1993J VLBI. II. Related Changes of the Deceleration, Flux Density Decay, and Spectrum

Autor: A. J. Beasley, Norbert Bartel, John Conway, Michael Bietenholz, G. Umana, Wayne Cannon, D. A. Graham, Michael P. Rupen, V. I. Altunin, Tiziana Venturi

Publikováno v: The Astrophysical Journal. 581:404-426

Phase-referenced multifrequency VLBI observations of supernova 1993J in the nearby galaxy M81 at 34 epochs from t ¼ 30 to � 3000 days after shock breakout show the detailed characteristics of the non–self-similar expansion. For the first year, t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57bdbefd1c233961dc9505971ffcac7a
https://doi.org/10.1086/344198

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Microstructure of pulsar radio pulses measured with a time resolution of 62.5 ns at 1650 MHz

Autor: Wayne Cannon, Norbert Bartel, A. Yu. Novikov, V. I. Altunin, M. V. Popov, V. I. Kondratiev

Publikováno v: Astronomy Reports. 46:206-215

We present an analysis of pulsar observations carried out on two frequency channels at 1634 MHz and 1650 MHz with a time resolution of 62.5 ns on the 70-m radio telescope of the NASA Deep Space Network in Tidbinbilla. The data were recorded using the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2b8f53c969613c9140acffb5323d5c95
https://doi.org/10.1134/1.1463098

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Space--VLBI observations of the OH maser OH 34.26+0.15: low interstellar scattering

Autor: Ed Fomalont, Sean M. Dougherty, A. I. Smirnov, B. A. Poperechenko, Katsunori M. Shibata, A. V. Kovalenko, V. G. Grachev, B. Carlson, John Reynolds, V. I. Altunin, V. I. Slysh, M. V. Popov, D. R. Jiang, Yu. N. Gorshenkov, I. E. Val'tts, M. A. Voronkov, Tomofumi Umemoto, Victor Migenes, B. Z. Kanevsky

Publikováno v: Monthly Notices of the Royal Astronomical Society. 320:217-223

We report on the first space-VLBI observations of the OH34.26+0.15 maser in two main line OH transitions at 1665 and 1667 MHz. The observations involved the space radiotelescope on board the Japanese satellite HALCA and an array of ground radio teles

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d7a1d78bc39f6dcd7d4b56aa7ecc684
https://doi.org/10.1046/j.1365-8711.2001.03959.x

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Supernova 1993J in M81

Autor: M. F. Bietenholz, Anthony Beasley, Wayne Cannon, D. A. Graham, V. I. Altunin, G. Umana, N. Bartell, Tiziana Venturi, Michael P. Rupen, John Conway

Publikováno v: Symposium - International Astronomical Union. 205:380-383

Twenty-two consecutive VLBI images of supernova 1993J in the galaxy M81 taken over 7 years show, in unprecedented detail, the dynamic evolution of the expanding radio shell of an exploded star. High precision astrometry using phase-referencing shows

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5317e7420b80131bae31bf74be3af65
https://doi.org/10.1017/s0074180900221529

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VLBI studies of the solar-wind plasma irregularities at 18 and 92 CM wavelengths in 1994–1996

Autor: M. Nechaeva, B. N. Lipatov, Yu. V. Tikhomirov, S. D. Snegirev, A. F. Dement’ev, V. A. Okmyanskiy, V. I. Altunin

Publikováno v: Radiophysics and Quantum Electronics. 43:178-186

We discuss the capabilities of VLBI studies of irregularities of the solar-wind plasma using multi-element radio interferometric facilities. We analyze the data obtained during international VLBI experiments at decimeter wavelengths (92 and 18 cm) in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c34d723998be0b552f408dd82667dc7d
https://doi.org/10.1007/bf02677181

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