Abstract
We present the results of the analysis of thirteen events consisting of dm-spikes observed in Toruń between 15 March 2000 and 30 October 2001. The events were obtained with a very high time resolution (80 microseconds) radio spectrograph in the 1352 – 1490 MHz range. These data were complemented with observations from the radio spectrograph at Ondřejov in the 0.8 – 2.0 GHz band. We evaluated the basic characteristics of the individual spikes (duration, spectral width, and frequency drifts), as well as their groups and chains, the location of their emission sources, and the temporal correlations of the emissions with various phases of the associated solar flares. We found that the mean duration and spectral width of the radio spikes are equal to 0.036 s and 9.96 MHz, respectively. Distributions of the duration and spectral widths of the spikes have positive skewness for all investigated events. Each spike shows positive or negative frequency drift. The mean negative and positive drifts of the investigated spikes are equal to −776 MHz s−1 and 1608 MHz s−1, respectively. The emission sources of the dm-spikes are located mainly at disk center. We have noticed two kinds of chains, with and without frequency drifts. The mean durations of the chains vary between 0.067 s and 0.509 s, while their spectral widths vary between 7.2 MHz and 17.25 MHz. The mean duration of an individual spike observed in a chain was equal to 0.03 s. While we found some agreement between the global characteristics of the groups of spikes recorded with the two instruments located in Toruń and Ondřejov, we did not find any one-to-one relation between individual spikes.
Energy Storage and Release through the Solar Activity Cycle – Models Meet Radio Observations Guest Editors: Christophe Marqué and Alexander Nindos.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Aschwanden, M.J.: 2002, Particle acceleration and kinematics in solar flares – a synthesis of recent observations and theoretical concepts. Space Sci. Rev. 101, 1 – 227.
Aschwanden, M.J.: 2004, Physics of the Solar Corona. An Introduction. Springer, Berlin.
Aschwanden, M.J., Guedel, M.: 1992, The coevolution of decimetric millisecond spikes and hard X-ray emission during solar flares. Astrophys. J. 401, 736 – 753.
Bárta, M., Karlický, M.: 2001, Turbulent plasma model of the narrowband dm-spikes. Astron. Astrophys. 379, 1045 – 1051.
Benz, A.O.: 1985, Radio spikes and the fragmentation of flare energy release. Solar Phys. 96, 357 – 370.
Benz, A.O.: 1986, Millisecond radio spikes. Solar Phys. 104, 99 – 110.
Benz, A.O.: 2002, Plasma Astrophysics: Kinetic Processes in Solar and Stellar Coronae, 279, 2nd edn., Kluwer Academic, Berlin.
Benz, A.O., Csillaghy, A., Aschwanden, M.J.: 1996, Metric spikes and electron acceleration in the solar corona. Astron. Astrophys. 309, 291 – 300.
Benz, A.O., Magun, A., Stehling, W., Su, H.: 1992a, Electron beams in the low corona. Solar Phys. 141, 335 – 346.
Benz, A.O., Su, H., Magun, A., Stehling, W.: 1992b, Millisecond microwave spikes at 8 GHz during solar flares. Astron. Astrophys. Suppl. 93, 539 – 544.
Benz, A.O., Grigis, P.C., Csillaghy, A., Saint-Hilaire, P.: 2005, Survey on solar X-ray flares and associated coherent radio emissions. Solar Phys. 226, 121 – 142.
Benz, A.O., Monstein, C., Beverland, M., Meyer, H., Stuber, B.: 2009, High spectral resolution observation of decimetric radio spikes emitted by solar flares – first results of the Phoenix-3 spectrometer. Solar Phys. 260, 375 – 388.
Cadwell, B.J.: 1997, Pulsar survey and timing with the Penn State Pulsar Machines. Ph.D. thesis.
Chernov, G.P., Fu, Q.J., Lao, D.B., Hanaoka, Y.: 2001, Ion-sound model of microwave spikes with fast shocks in the reconnection region. Solar Phys. 201, 153 – 180.
Csillaghy, A., Benz, A.O.: 1993, The bandwidth of millisecond radio spikes in solar flares. Astron. Astrophys. 274, 487 – 496.
Da̧browski, B.P., Benz, A.O.: 2009, Correlation between decimetric radio emission and hard X-rays in solar flares. Astron. Astrophys. 504, 565 – 573.
Da̧browski, B.P., Kus, A.J.: 2007, Millisecond solar radio spikes observed at 1420 MHz. Mem. Soc. Astron. Ital. 78, 264 – 267.
Da̧browski, B.P., Rudawy, P., Falewicz, R., Siarkowski, M., Kus, A.J.: 2005, Millisecond radio spikes in the decimetre band and their related active solar phenomena. Astron. Astrophys. 434, 1139 – 1153.
Fárník, F., Karlický, M.: 2005, Narrowband dm-spikes in the frequency range above 1 GHz and hard X-ray emission. Adv. Space Res. 35, 1799 – 1804.
Fleishman, G.D., Melnikov, V.F.: 1998, Millisecond solar radio spikes. Sov. Phys. Usp. 41, 1157 – 1189.
Fleishman, G.D., Melnikov, V.F.: 1999, Solar millisecond radio spikes: recent progress, current state, problems for future. In: A. Wilson et al. (eds.) Magnetic Fields and Solar Processes, ESA Special Publication 448, 1247 – 1251.
Guedel, M., Benz, A.O.: 1988, A catalogue of decimetric solar flare radio emission. Astron. Astrophys. Suppl. 75, 243 – 259.
Guedel, M., Benz, A.O.: 1990, Time profiles of solar radio spikes. Astron. Astrophys. 231, 202 – 212.
Jiřička, K., Karlický, M., Kepka, O., Tlamicha, A.: 1993, Fast drift burst observations with the new Ondrejov radiospectrograph. Solar Phys. 147, 203 – 206.
Jiřička, K., Karlický, M., Mészárosová, H., Snížek, V.: 2001, Global statistics of 0.8 – 2.0 GHz radio bursts and fine structures observed during 1992 – 2000 by the Ondřejov radiospectrograph. Astron. Astrophys. 375, 243 – 250.
Karlický, M., Sobotka, M., Jiřička, K.: 1996, Narrowband dm-spikes in the 2 GHz frequency range and MHD cascading waves in reconnection outflows. Solar Phys. 168, 375 – 383.
Karlický, M., Jiřička, K., Sobotka, M.: 2000, Power-law spectra of 1 – 2 GHz narrowband dm-spikes. Solar Phys. 195, 165 – 174.
Karlický, M., Yan, Y., Fu, Q., Wang, S., Jiřička, K., Mészárosová, H., Liu, Y.: 2001, Drifting radio bursts and fine structures in the 0.8 – 7.6 GHz frequency range observed in the NOAA 9077 AR (10 – 14 July 2000) solar flares. Astron. Astrophys. 369, 1104 – 1111.
Magdalenić, J., Vršnak, B., Zlobec, P., Hillaris, A., Messerotti, M.: 2006, Classification and properties of supershort solar radio bursts. Astrophys. J. 642, L77 – L80.
Messmer, P., Benz, A.O.: 2000, The minimum bandwidth of narrowband spikes in solar flare decimetric radio waves. Astron. Astrophys. 354, 287 – 295.
Mészárosová, H., Veronig, A., Zlobec, P., Karlický, M.: 2003, Analysis of solar narrow band dm-spikes observed at 1420 and 2695 MHz. Astron. Astrophys. 407, 1115 – 1125.
Rozhansky, I.V., Fleishman, G.D., Huang, G.L.: 2008, Millisecond microwave spikes: statistical study and application for plasma diagnostics. Astrophys. J. 681, 1688 – 1697.
Spicer, D.S., Benz, A.O., Huba, J.D.: 1981, Solar type I noise storms and newly emerging magnetic flux. Astron. Astrophys. 105, 221 – 228.
Takakura, T., Scalise, E.: 1970, Gyro-synchrotron emission in a magnetic dipole field for the application to the center-to-limb variation of microwave impulsive bursts. Solar Phys. 11, 434 – 455.
Wang, M., Xie, R.X.: 1999, Millisecond spikes in a short decimetric solar radio burst. Solar Phys. 185, 351 – 360.
Wang, S.J., Yan, Y.H., Fu, Q.J.: 2002, Spikes in solar radio bursts at frequencies near 3 GHz. Solar Phys. 209, 185 – 193.
Wang, S.J., Yan, Y.H., Liu, Y.Y., Fu, Q.J., Tan, B.L., Zhang, Y.: 2008, Solar radio spikes in 2.6 – 3.8 GHz during the 13 December 2006 event. Solar Phys. 253, 133 – 141.
Zhao, R.: 1995, A model of solar (radio) active regions. Astrophys. Space Sci. 234, 125 – 137.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer Science+Business Media B.V.
About this chapter
Cite this chapter
Da̧browski, B.P., Rudawy, P., Karlický, M. (2011). Millisecond Radio Spikes in the Decimetric Band. In: Marqué, C., Nindos, A. (eds) Energy Storage and Release through the Solar Activity Cycle. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4403-9_5
Download citation
DOI: https://doi.org/10.1007/978-1-4614-4403-9_5
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-4402-2
Online ISBN: 978-1-4614-4403-9
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)