Abstract
We have performed a statistical study of 152 Type III radio bursts observed by Solar TErrestrial RElations Observatory (STEREO)/Waves between May 2007 and February 2013. We investigated the flux density between 125 kHz and 16 MHz. Both high- and low-frequency cutoffs were observed in 60 % of events, suggesting an important role of propagation. As already reported by previous authors, we observed that the highest flux density occurs at 1 MHz on both spacecraft. We developed a simplified analytical model of the flux density as a function of radial distance and compared it with the STEREO/Waves data.
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Bale, S.D., Ullrich, R., Goetz, K., Alster, N., Cecconi, B., Dekkali, M., Lingner, N.R., Macher, W., Manning, R.E., McCauley, J., Monson, S.J., Oswald, T.H., Pulupa, M.: 2008, The electric antennas for the STEREO/WAVES experiment. Space Sci. Rev. 136, 529. 10.1007/s11214-007-9251-x . cdsads.u-strasbg.fr/abs/2008SSRv..136..529B .
Biesecker, D.A., Webb, D.F., St. Cyr, O.C.: 2008, STEREO space weather and the space weather beacon. Space Sci. Rev. 136, 45. 10.1007/s11214-007-9165-7 . cdsads.u-strasbg.fr/abs/2008SSRv..136...45B .
Bougeret, J.L., Goetz, K., Kaiser, M.L., Bale, S.D., Kellogg, P.J., Maksimovic, M., Monge, N., Monson, S.J., Astier, P.L., Davy, S., Dekkali, M., Hinze, J.J., Manning, R.E., Aguilar-Rodriguez, E., Bonnin, X., Briand, C., Cairns, I.H., Cattell, C.A., Cecconi, B., Eastwood, J., Ergun, R.E., Fainberg, J., Hoang, S., Huttunen, K.E.J., Krucker, S., Lecacheux, A., MacDowall, R.J., Macher, W., Mangeney, A., Meetre, C.A., Moussas, X., Nguyen, Q.N., Oswald, T.H., Pulupa, M., Reiner, M.J., Robinson, P.A., Rucker, H., Salem, C., Santolik, O., Silvis, J.M., Ullrich, R., Zarka, P., Zouganelis, I.: 2008, S/WAVES: the radio and plasma wave investigation on the STEREO mission. Space Sci. Rev. 136, 487. 10.1007/s11214-007-9298-8 . cdsads.u-strasbg.fr/abs/2008SSRv..136..487B .
Cecconi, B., Bonnin, X., Hoang, S., Maksimovic, M., Bale, S.D., Bougeret, J.-L., Goetz, K., Lecacheux, A., Reiner, M.J., Rucker, H.O., Zarka, P.: 2008, STEREO/Waves goniopolarimetry. Space Sci. Rev. 136, 549. 10.1007/s11214-007-9255-6 . 2008SSRv..136..549C .
Drummond, W., Pines, D.: 1962, Non-linear stability of plasma oscillations. Nuclear Fusion 3, 1049.
Dulk, G.A.: 2000, Type III solar radio bursts at long wavelengths. Geophys. Monogr. Ser., AGU 119, 115. 2000GMS...119..115D .
Dulk, G.A., Goldman, M.V., Steinberg, J.L., Hoang, S.: 1987, The speeds of electrons that excite solar radio bursts of type III. Astron. Astrophys. 173, 366. 1987A%26A...173..366D .
Dulk, G.A., Leblanc, Y., Bougeret, J.-L., Hoang, S.: 1996, Type III bursts observed simultaneously by Wind and Ulysses. Geophys. Res. Lett. 23, 1203. 10.1029/96GL01353 . 1996GeoRL..23.1203D .
Dulk, G.A., Leblanc, Y., Robinson, P.A., Bougeret, J.-L., Lin, R.P.: 1998, Electron beams and radio waves of solar type III bursts. J. Geophys. Res. 103, 17223. 10.1029/97JA03061 . 1998JGR...10317223D .
Ginzburg, V.L., Zhelezniakov, V.V.: 1958, On the possible mechanisms of sporadic solar radio emission (radiation in an isotropic plasma). Soviet Astron. 2, 653. 1958SvA.....2..653G .
Kaiser, M.L., Kucera, T.A., Davila, J.M., St. Cyr, O.C., Guhathakurta, M., Christian, E.: 2008, The STEREO mission: an introduction. Space Sci. Rev. 136, 5. 10.1007/s11214-007-9277-0 . 2008SSRv..136....5K .
Kellogg, P.J.: 1980, Fundamental emission in three type III solar bursts. Astrophys. J. 236, 696. 10.1086/157789 . 1980ApJ...236..696K .
Kontar, E.P.: 2001, Dynamics of electron beams in the solar corona plasma with density fluctuations. Astron. Astrophys. 375, 629. 10.1051/0004-6361:20010807 . 2001A%26A...375..629K .
Kontar, E.P., Reid, H.A.S.: 2009, Onsets and spectra of impulsive solar energetic electron events observed near the Earth. Astrophys. J. Lett. 695, L140. 10.1088/0004-637X/695/2/L140 . 2009ApJ...695L.140K .
Krupar, V., Maksimovic, M., Santolik, O., Cecconi, B., Kruparova, O.: 2014, Statistical survey of type III radio bursts at long wavelengths observed by the Solar TErrestrial RElations Observatory (STEREO)/Waves instruments: goniopolarimetric properties and radio source locations. Solar Phys., submitted.
Krupar, V., Santolik, O., Cecconi, B., Maksimovic, M., Bonnin, X., Panchenko, M., Zaslavsky, A.: 2012, Goniopolarimetric inversion using SVD: an application to type III radio bursts observed by STEREO. J. Geophys. Res. 117(16), 6101. 10.1029/2011JA017333 . 2012JGRA..11706101K .
Leblanc, Y., Dulk, G.A., Hoang, S.: 1995, The low radio frequency limit of solar type III bursts: Ulysses observations in and out of the ecliptic. Geophys. Res. Lett. 22, 3429. 10.1029/95GL01717 . 1995GeoRL..22.3429L .
Leblanc, Y., Dulk, G.A., Hoang, S., Bougeret, J.-L., Robinson, P.A.: 1996, Type III radio bursts observed by ULYSSES pole to pole, and simultaneously by wind. Astron. Astrophys. 316, 406. 1996A%26A...316..406L .
Magelssen, G.R., Smith, D.F.: 1977, Nonrelativistic electron stream propagation in the solar atmosphere and type III radio bursts. Solar Phys. 55, 211. 10.1007/BF00150886 . 1977SoPh...55..211M .
Mel’nik, V.N., Lapshin, V., Kontar, E.: 1999, Propagation of a monoenergetic electron beam in the solar corona. Solar Phys. 184, 353. 1999SoPh..184..353M .
Melrose, D.B.: 1980, The emission mechanisms for solar radio bursts. Space Sci. Rev. 26, 3. 10.1007/BF00212597 . 1980SSRv...26....3M .
Melrose, D.B., Cairns, I.H., Dulk, G.A.: 1986, Clumpy Langmuir waves in type III solar radio bursts. Astron. Astrophys. 163, 229. 1986A%26A...163..229M .
Meyer-Vernet, N., Perche, C.: 1989, Tool kit for antennae and thermal noise near the plasma frequency. J. Geophys. Res. 94, 2405. 10.1029/JA094iA03p02405 . 1989JGR....94.2405M .
Novaco, J.C., Brown, L.W.: 1978, Nonthermal galactic emission below 10 megahertz. Astrophys. J. 221, 114. 10.1086/156009 . 1978ApJ...221..114N .
Pines, D., Schrieffer, J.R.: 1962, Approach to equilibrium of electrons, plasmons, and phonons in quantum and classical plasmas. Phys. Rev. E 125, 804. 10.1103/PhysRev.125.804 . 1962PhRv..125..804P .
Reid, H.A.S., Kontar, E.P.: 2010, Solar wind density turbulence and solar flare electron transport from the Sun to the Earth. Astrophys. J. 721, 864. 10.1088/0004-637X/721/1/864 . 2010ApJ...721..864R .
Reiner, M.J., Karlický, M., Jiřička, K., Aurass, H., Mann, G., Kaiser, M.L.: 2000, On the solar origin of complex type III-like radio bursts observed at and below 1 MHZ. Astrophys. J. 530, 1049. 10.1086/308394 . 2000ApJ...530.1049R .
Robinson, P.A., Cairns, I.H.: 1998, Fundamental and harmonic emission in type III solar radio bursts – III. Heliocentric variation of interplanetary beam and source parameters. Solar Phys. 181, 429. 10.1023/A:1005023002461 . 1998SoPh..181..429R .
Sittler, E.C. Jr., Guhathakurta, M.: 1999, Semiempirical two-dimensional magnetohydrodynamic model of the solar corona and interplanetary medium. Astrophys. J. 523, 812. 10.1086/307742 . 1999ApJ...523..812S .
Smith, D.F., Sime, D.: 1979, Origin of plasma-wave clumping in type III solar radio burst sources. Astrophys. J. 233, 998. 10.1086/157463 . 1979ApJ...233..998S .
Thejappa, G., MacDowall, R.J., Kaiser, M.L.: 2007, Monte Carlo simulation of directivity of interplanetary radio bursts. Astrophys. J. 671, 894. 10.1086/522664 . 2007ApJ...671..894T .
Vedenov, A., Velikhov, E., Sagdeev, R.: 1962, Quasi-linear theory of plasma oscillations. Nucl. Fus., 465.
Weber, R.R.: 1978, Low frequency spectra of type III solar radio bursts. Solar Phys. 59, 377. 10.1007/BF00951843 . 1978SoPh...59..377W .
Wild, J.P.: 1950, Observations of the spectrum of high-intensity solar radiation at metre wavelengths. III. Isolated bursts. Austral. J. Sci. Res., A Phys. Sci. 3, 541. 1950AuSRA...3..541W .
Zaslavsky, A., Meyer-Vernet, N., Hoang, S., Maksimovic, M., Bale, S.D.: 2011, On the antenna calibration of space radio instruments using the galactic background: general formulas and application to STEREO/WAVES. Radio Sci. 46, RS2008. 10.1029/2010RS004464 . 2011RaSc...46.2008Z .
Acknowledgements
The authors would like to thank the many individuals and institutions who contributed to making STEREO/Waves possible. J. Soucek acknowledges the support of the Czech Grant Agency grant GAP209/12/2394. O. Kruparova thanks for the support of the Czech Grant Agency grant GP13-37174P. Financial support by STFC and by the European Commission through the “Radiosun” (PEOPLE-2011-IRSES-295272) is gratefully acknowledged (E.P. Kontar). O. Santolik and V. Krupar acknowledge the support of the Czech Grant Agency grant GAP205/10/2279.
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Krupar, V., Maksimovic, M., Santolik, O. et al. Statistical Survey of Type III Radio Bursts at Long Wavelengths Observed by the Solar TErrestrial RElations Observatory (STEREO)/Waves Instruments: Radio Flux Density Variations with Frequency. Sol Phys 289, 3121–3135 (2014). https://doi.org/10.1007/s11207-014-0522-x
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DOI: https://doi.org/10.1007/s11207-014-0522-x