Results 51 to 60 of about 1,286 (129)

Microwave diagnostics of flare plasma by the direct fitting method based on data from the Siberian Radioheliograph

Solar-Terrestrial Physics
In this paper, we analyze images and the frequency spectrum of microwave emission in the maximum of brightness distribution in the January 20, 2022 and July 16, 2023 flares recorded by the Siberian Radioheliograph in the 3–6 GHz and 6–12 GHz ranges.
.Smirnov D. A., Melnikov V. F
doaj   +1 more source

A new impedance matching method for an ultra-wide band and dual circularly polarised feed [PDF]

, 2016
In traditional antenna design, metal components are not placed in the central part of the antenna as they change the characteristics of near field radiation.
Chen, Zhi Jun, Jeffrey, Natasha, Li, Sha, Liu, Dong Hao, Wang, Wei, Yan, Yi Hua, Zhang, Fu Shun   +6 more
core   +1 more source

Solar Physics with the Square Kilometre Array [PDF]

, 2018
The Square Kilometre Array (SKA) will be the largest radio telescope ever built, aiming to provide collecting area larger than 1 km$^2$. The SKA will have two independent instruments, SKA-LOW comprising of dipoles organized as aperture arrays in ...
Kontar, E. P., Nindos, A., Oberoi, D.
core   +2 more sources

On the solar origin of interplanetary disturbances observed in the vicinity of the Earth [PDF]

Annales Geophysicae, 2003
The solar origin of 40 interplanetary disturbances observed in the vicinity of the Earth between January 1997 and June 1998 is investigated in this paper.
N. Vilmer, M. Pick, R. Schwenn, P. Ballatore, J. P. Villain   +4 more
doaj   +1 more source

Center-to-Limb Variation of Radio Emissions from Thermal-Rich and Thermal-Poor Solar Flares

, 2011
A statistical analysis of radio flare events was performed by using the event list of Nobeyama Radioheliograph in 1996-2009. We examined center-to-limb variations of 17GHz and 34GHz flux by dividing the flare events into different groups with respect to ...
Asai, Ayumi, Kawate, Tomoko, Kiyoshi, Ichimoto   +2 more
core   +1 more source

Broadband microwave burst produced by electron beams

, 2007
Theoretical and experimental study of fast electron beams attracts a lot of attention in the astrophysics and laboratory. In the case of solar flares the problem of reliable beam detection and diagnostics is of exceptional importance. This paper explores
A. T. Altyntsev, Ding M.-D., G. D. Fleishman, G.‐L. Huang, Getmantsev G. G., Ginzburg V. L., Ginzburg V. L., Klein K.-L., Korchak A. A., Korchak A. A., Nakajima H., Torii C., V. F. Melnikov, Yoshimori M.   +13 more
core   +1 more source

The Low-High-Low Trend of Type III Radio Burst Starting Frequencies and Solar Flare Hard X-rays [PDF]

, 2014
Using simultaneous X-ray and radio observations from solar flares, we investigate the link between the type III radio burst starting frequency and hard X-ray spectral index.
Kontar, Eduard P., Reid, Hamish A. S., Vilmer, Nicole   +2 more
core   +4 more sources

Automatic detection of limb prominences in 304 A EUV images [PDF]

, 2009
A new algorithm for automatic detection of prominences on the solar limb in 304 A EUV images is presented, and results of its application to SOHO/EIT data discussed.
C. Cortes, C. Foullon, D.H. Mackay, E. Robbrecht, F. Auchère, G. Fu, H.R. Gilbert, I.F. Scholl, J. Aboudarham, M. Aizerman, M. Shimojo, M.J. Aschwanden, N. Cristianini, N. Fuller, N. Gopalswamy, N. Labrosse, P. Heinzel, P.N. Bernasconi, S. Dalla, S. Marshall, S. Patsourakos, U. Anzer, V.V. Zharkova   +22 more
core   +2 more sources

High Performance Negative Database for Massive Data Management System of The Mingantu Spectral Radioheliograph

, 2017
As a dedicated synthetic aperture radio interferometer, the MingantU SpEctral Radioheliograph (MUSER), initially known as the Chinese Spectral RadioHeliograph (CSRH), has entered the stage of routine observation. More than 23 million data records per day
Deng, Hui, Liu, Cuiyin, Liu, Yingbo, Shi, Congming, Wang, Feng, Wei, Shoulin   +5 more
core   +1 more source

Observations of quasi-periodic solar X-ray emission as a result of MHD oscillations in a system of multiple flare loops

, 2009
We investigate the solar flare of 20 October 2002. The flare was accompanied by quasi-periodic pulsations (QPP) of both thermal and nonthermal hard X-ray emissions (HXR) observed by RHESSI in the 3-50 keV energy range.
A. Asai, A. B. Struminsky, A.R. Inglis, A.R. Inglis, B. Lipa, B.N. Handy, B.R. Dennis, C. Foullon, C. Jager de, D.M. Smith, G.J. Hurford, G.K. Parks, H. Rosenberg, I. V. Zimovets, I.V. Zimovets, J.A. Vorpahl, J.C. Brown, J.D. Scargle, J.H. Horne, J.I. Sakai, J.P. Delaboudinière, M.J. Aschwanden, N.R. Lomb, P.C. Grigis, P.H. Scherrer, R.P. Lin, S.M. Hill, V.M. Nakariakov, V.M. Nakariakov, V.M. Nakariakov, V.V. Zaitsev, W.Q. Gan, Y.P. Li   +32 more
core   +1 more source