Abstract and keywords
Abstract (English):
Microwave fine structures allow us to study plasma evolution in an energy release region. The Siberian Solar Radio Telescope (SSRT) is a unique instrument designed to examine fine structures at 5.7 GHz. A complex analysis of data from RATAN-600, 4–8 GHz spectropolarimeter, and SSRT, simultaneously with EUV data, made it possible to localize sources of III type microwave bursts in August 10, 2011 event within the entire frequency band of burst occurrence, as well as to determine the most probable region of primary energy release. To localize sources of III type bursts from RATAN-600 data, an original method for data processing has been worked out. At 5.7 GHz, the source of bursts was determined along two coordinates, whereas at 4.5, 4.7, 4.9, 5.1, 5.3, 5.5, and 6.0 GHz, their locations were identified along one coordinate. The size of the burst source at 5.1 GHz was found to be maximum as compared to those at other frequencies.

Type III microwave bursts, fine structures, solar microwave emission
Publication text (PDF): Read Download

1. Allaart M.A.F., van Nieuwkoop J., Slottje C., Sondaar L.H. Fine structure in solar microwave bursts. Solar Phys. 1989, vol. 130, pp. 183.

2. Altyntsev A.T., Grechnev V.V., Konovalov S.K., Lesovoi S.V., Lisysian E.G., Treskov T.A., Rosenraukh Yu.M., Magun A. On the apparent size of solar microwave spike sources. Astrophys. J. 1996, vol. 469, pp. 976.

3. Altyntsev A.T., Nakajima H., Takano T., Grechnev V., Konovalov S. The study of solar flares with microwave sub-second pulses at 5.7 and 17 GHz. Proc. Nobeyama Symp. 1999, pp. 279-282.

4. Altyntsev A.T., Lesovoi S.V., Meshalkina N.S., Sych R.A., Yan Yihua. The microwave subsecond pulse of September 17, 2001: The spectrum, location and size of the source. Astron. Astrophys. 2003, vol. 400, pp. 337-346.

5. Altyntsev A.T., Grechnev V.V., Meshalkina N.S., Yan Y. Microwave type III-like bursts as possible signatures of magnetic reconnection. Solar Phys. 2007, vol. 242, pp. 111.

6. Bastian T.S. Angular scattering of solar radio emission by coronal turbulence. Astrophys. J. 1994, vol. 426, p. 774.

7. Benz A.O. Millisecond radio spikes. Solar Phys. 1986, vol. 104, pp. 99-110.

8. Benz A.O., Saint-Hilaire P., Vilmer N. Location of narrowband spikes in solar flares. Astron. Astrophys. 2002, vol. 383, pp. 678-684.

9. Bogod V.M., Zhekanis G.N., Mingaliev M.G., Tokhchukova S.Kh. Multi-azimuth regime of observation at RATAN-600 southern sector with periscope reflector. Izvestiya Vuzov. Radiofizika [Institute reports. Radiophysics]. 2004, vol. 47, pp. 255. (In Russian).

10. Bogod V.M. RATAN-600 radio telescope in the 24th solar activity cycle. I. New opportunities and tasks. Astrophys. Bull. 2011, vol. 66, pp. 190.

11. Bogod V.M., Alesin A.M., Pervakov A.A. RATAN-600 radio telescope in the 24th solar-activity cycle. II. Multi-octave spectral and polarization high-resolution solar research system. Astrophys. Bull. 2011, vol. 66, pp. 205.

12. Bruggmann G., Magun A., Benz A.O., Stehling W. Solar flare microwave observations with high spectral resolution. Astron. Astrophys. 1990, vol. 240, pp. 506-510.

13. Chen B., Bastian T.S., White S.M., Gary D.E., Perley R., Rupen M., Carlson B. Tracing electron beams in the Sun’s corona with radio dynamic imaging spectroscopy. Astrophys. J. Lett. 2013, vol. 763, pp. L21.

14. Chernov G.P., Yan Y.H., Fu Q.J. A superfine structure in solar microwave bursts. Astron. Astrophys. 2003, vol. 406, pp. 1071-1081.

15. Chernov G.P., Yan Y.H, Fu Q.J. The importance of source positions during radio fine structure observations. Res. Astron. Astrophys.. 2014, vol. 14, pp. 831-842.

16. Droege F. Millisecond fine-structures of solar burst radiation in the range 0.2-1.4 GHz. Astron. Astrophys. 1977, vol. 57, pp. 285-290.

17. Fu Q., Qin Z., Ji H., Pei L. A broadband spectrometer for decimeter and microwave radio bursts. Solar Phys. 1995, vol. 160, pp. 97.

18. Fu Qi-Jun, Yan Yi-Hua, Liu Yu-Ying, Wang Min, Wang Shu-Juan. A new catalogue of fine structures superimposed on solar microwave bursts. Chinese J. Astron. Astrophys. 2004, vol. 4, pp. 176-188.

19. Gary D.E. Hurford G.J., Nita G.M., White S.M. McTiernan J., Fleishman G.D. The Expanded Owens Valley Solar Array (EOVSA). Bull. Am. Astron. Soc. 2014, vol. 224, pp. 123.

20. Grechnev V.V., Lesovoi S.V., Smolkov G.Y., Krissinel B.B., Zandanov V.G., Altyntsev A.T., Kardapolova N.N., Sergeev R.Y., Uralov A.M., Maksimov V.P., Lubyshev B.I. The Siberian Solar Radio Telescope: The current state of the instrument, observations, and data. Solar Phys. 2003, vol. 216, pp. 239-272.

21. Huang J., Yan Y., Liu Y. The statistical features of radio bursts with fine structure at 1.1-7.6 GHz. Adv. Space Res. 2010, vol. 46, pp. 1388-1393.

22. Jiricka K., Karlicky M. Meszarosova H., Snizek V. Global statistics of 0.8-2.0 GHz radio bursts and fine structures observed during 1992-2000 by the Ondrejov radiospectrograph. Astron. Astrophys. 2001, vol. 375, pp. 243-250.

23. Kashapova L.K., Tokhchukova S.K., Rudenko G.V., Bogod V.M., Muratov A.A. On the possible mechanisms of energy release in a C-class flare. Central European Astrophys. Bull. 2013, vol. 37, pp. 573-583.

24. Kashapova L.K., Tokhchukova S.K., Zhdanov D.A., Bogod V.M., Rudenko G.V. The subsecond pulses during the August 10, 2011 flare by observations of RATAN-600 and the 4-8 GHz Siberian solar spectropolarimeter. Geomagnetism and Aeronomy. 2013, vol. 53, pp. 1021-1024.

25. Khaikin S.E., Kaidanovsky N.L., Pariisky Yu.N., Esepkina N.A. RATAN-600 Radiotelescope. Izvestiya Glavnoi Astronomicheskoi Observatorii v Pulkove [The Central Astron. Observatory Rep.]. 1972, vol. 188, pp. 3-12. (In Russian).

26. Lesovoi S.V., Altyntsev A.T., Ivanov E.F., Gubin A.V. A 96-antenna radioheliograph. Res. Astron. Astrophys. 2014. vol. 14, pp. 864-868.

27. Meshalkina N.S., Altyntsev A.T., Grechnev V.V., Sych R.A., Yihua Y. An analysis of the spatial features of drifting bursts in the microwave range. ESA Special Publication. 2002. vol. 506, pp. 343-346.

28. Meshalkina N.S., Altyntsev A.T., Sych R.A., Chernov G.P., Yihua Y. On the wave mode of subsecond pulses in the cm-range. Solar Phys. 2004. vol. 221. pp. 85-99.

29. Meshalkina N.S. Altyntsev A.T., Lesovoy S.V., Zandanov V.G. On the size of solar microwave subsecond impulse sources. Solnechno-Zemnaya Fizika [Solar-Terr. Phys.]. 2005, vol. 8, pp. 82-84 (in Russian).

30. Meshalkina N.S. Altyntsev A.T., Zhdanov D.A., Lesovoi S.V., Kochanov A.A., Yan Y.H., Tan C.M. Study of flare energy release using events with numerous type III-like bursts in microwaves. Solar Phys. 2012, vol. 280, pp. 537-549.

31. Nakajima H., Nishio M., Enome S., Shibasaki K., Takano T., Hanaoka Y., Torii C., Sekiguchi H., Bushimata T., Kawashima S. The Nobeyama Radioheliograph. IEEE Proc. 1994, vol. 82, pp. 705-713.

32. Reid H.A.S., Ratcliffe H. A review of solar type III radio bursts. Res. Astron. Astrophys. 2014, vol. 14, no. 7, pp. 773-804.

33. Staehli M., Benz A.O. Microwave emission of solar electron beams. Astron. Astrophys. 1987, vol. 175, pp. 271-276.

34. Sych R. A., Altyntsev A. T., Grechnev V.V., Meshalkina N.S., Yan Y. Observations of microwave subsecond pulses with high spectral and spatial resolution. ESA Special Publ. 2002, pp. 761.

35. Tokhchukova S. Kh., Korzhavin A. N., Bogod V. M., Kurochkin E. A., Shendrik A. V. Computing the horizontal size of the RATAN-600 beam for the «Southern sector with a flat reflector» mode with allowance for parameters of primary reflectors. Astrofizicheskii Byulleten’ [Astrophys. Bull.]. 2014, vol. 69, iss. 3, pp. 337-388. (In Russian).

36. Yan Y., Wang W., Liu F., Geng L., Chen Z., Zhang J. Radio imaging spectroscopy observations of the Sun in decimetric and centimetric wavelengths. IAU Symp. 2013, vol. 294, pp. 489-494.

37. Zhdanov D. A., Zandanov V. G. Broadband microwave spectropolarimeter. Central European Astrophys. Bull. 2011. vol. 35, pp. 223-228.

38. Zhdanov D.A., Zandanov V.G. Observations of microwave fine structures by the Badary Broadband Microwave Spectropolarimeter and the Siberian Solar Radio Telescope. Solar Phys. 2015, vol. 290, no. 2, pp. 287-294.

Login or Create
* Forgot password?