Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Calvés, G. Molera"'
Autor:
Nunes, N. V., Bartel, N., Belonenko, A., Manucharyan, G. D., Popov, S. M., Rudenko, V. N., Gurvits, L. I., Cimò, G., Calvés, G. Molera, Zakhvatkin, M. V., Bietenholz, M. F.
The Einstein Equivalence Principle (EEP) is a cornerstone of general relativity and predicts the existence of gravitational redshift. We report on new results of measuring this shift with RadioAstron (RA), a space VLBI spacecraft launched into an evo
Externí odkaz:
http://arxiv.org/abs/2307.13435
Astronomers have studied the Vela pulsar (PSR~J0835$-$4510) for decades. This study analyses almost one hundred hours of single-pulse data collected over three consecutive days from 2016 and 2020. The work investigates the fascinating phenomena of th
Externí odkaz:
http://arxiv.org/abs/2306.13281
A monitoring campaign (2013-2020) of ESA's Mars Express to study interplanetary plasma scintillation
Autor:
Kummamuru, P., Calvés, G. Molera, Cimò, G., Pogrebenko, S. V., Bocanegra-Bahamón, T. M., Duev, D. A., Said, M. D. Md, Edwards, J., Ma, M., Quick, J., Neidhardt, A., de Vicente, P., Haas, R., Kallunki, J., Maccaferri, 1 G., Colucci, G., Yang, W. J., Hao, L. F., Weston, S., Kharinov, M. A., Mikhailov, A. G., Jung, T.
The radio signal transmitted by the Mars Express (MEX) spacecraft was observed regularly between the years 2013-2020 at X-band (8.42 GHz) using the European Very Long Baseline Interferometry (EVN) network and University of Tasmania's telescopes. We p
Externí odkaz:
http://arxiv.org/abs/2302.13898
Autor:
Litvinov, D. A., Nunes, N. V., Filetkin, A. I., Bartel, N., Gurvits, L. I., Calves, G. Molera, Rudenko, V. N., Zakhvatkin, M. V.
We present an improved model for the antenna phase center motion effect for high-gain mechanically steerable ground-based and spacecraft-mounted antennas that takes into account non-perfect antenna pointing. Using tracking data of the RadioAstron spa
Externí odkaz:
http://arxiv.org/abs/2110.02437
Autor:
Bocanegra-Bahamon, T. M., Calves, G. Molera, Gurvits, L. I., Cimo, G., Dirkx, D., Duev, D. A., Pogrebenko, S. V., Rosenblatt, P., Limaye, S., Cui, L., Li, P., Kondo, T., Sekido, M., Mikhailov, A. G., Kharinov, M. A., Ipatov, A. V., Wang, W., Zheng, W., Ma, M., Lovell, J. E. J., McCallum, J. N.
Publikováno v:
A&A 624, A59 (2019)
Context. Radio occultation is a technique used to study planetary atmospheres by means of the refraction and absorption of a spacecraft carrier signal through the atmosphere of the celestial body of interest, as detected from a ground station on Eart
Externí odkaz:
http://arxiv.org/abs/1903.01582
Autor:
Bocanegra-Bahamón, T. M., Calves, G. Molera, Gurvits, L. I., Duev, D. A., Pogrebenko, S. V., Cimo, G., Dirkx, D., Rosenblatt, P.
Publikováno v:
A&A 609, A59 (2018)
Context. Closed-loop Doppler data obtained by deep space tracking networks (e.g., NASA's DSN and ESA's Estrack) are routinely used for navigation and science applications. By "shadow tracking" the spacecraft signal, Earth-based radio telescopes invol
Externí odkaz:
http://arxiv.org/abs/1709.03419
Autor:
Litvinov, D. A., Bach, U., Bartel, N., Belousov, K. G., Bietenholz, M., Biriukov, A. V., Cimo, G., Duev, D. A., Gurvits, L. I., Gusev, A. V., Haas, R., Kauts, V. L., Kanevsky, B. Z., Kovalenko, A. V., Kronschnabl, G., Kulagin, V. V., Lindqvist, M., Calves, G. Molera, Neidhardt, A., Ploetz, C., Pogrebenko, S. V., Porayko, N. K., Rudenko, V. N., Smirnov, A. I., Sokolovsky, K. V., Stepanyants, V. A., Yang, J., Zakhvatkin, M. V.
A test of a cornerstone of general relativity, the gravitational redshift effect, is currently being conducted with the RadioAstron spacecraft, which is on a highly eccentric orbit around Earth. Using ground radio telescopes to record the spacecraft
Externí odkaz:
http://arxiv.org/abs/1605.05832
Autor:
Keimpema, A., Kettenis, M. M., Pogrebenko, S. V., Campbell, R. M., Cimó, G., Duev, D. A., Eldering, B., Kruithof, N., van Langevelde, H. J., Marchal, D., Calvés, G. Molera, Ozdemir, H., Paragi, Z., Pidopryhora, Y., Szomoru, A., Yang, J.
In this paper a description is given of the SFXC software correlator, developed and maintained at the Joint Institute for VLBI in Europe (JIVE). The software is designed to run on generic Linux-based computing clusters. The correlation algorithm is e
Externí odkaz:
http://arxiv.org/abs/1502.00467
Autor:
Calvés, G. Molera, Pogrebenko, S. V., Cimò, G., Duev, D. A., Bocanegra-Bahamón, T. M., Wagner, J. F., Kallunki, J., de Vicente, P., Kronschnabl, G., Haas, R., Quick, J., Maccaferri, G., Colucci, G., Wang, W. H., Yang, W. J., Hao, L. F.
Aims. The phase scintillation of the European Space Agency's (ESA) Venus Express (VEX) spacecraft telemetry signal was observed at X-band (\lambda = 3.6 cm) with a number of radio telescopes of the European VLBI Network (EVN) in the period 2009-2013.
Externí odkaz:
http://arxiv.org/abs/1403.2414
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.