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Related papers: Decameter Type III-Like Bursts

200 papers

Drift pairs are an unusual type of fine structure sometimes observed in dynamic spectra of solar radio emission. They appear as two identical short narrowband drifting stripes separated in time; both positive and negative frequency drifts…

Solar and Stellar Astrophysics · Physics 2019-10-23 Alexey Kuznetsov , Eduard Kontar

Type III radio bursts are not only the most intense but also the most frequently observed solar radio bursts. However, a number of their defining features remain poorly understood. Observational limitations, such as a lack of sufficient…

Solar and Stellar Astrophysics · Physics 2023-09-13 Immanuel Christopher Jebaraj , Vladimir Krasnoselskikh , Marc Pulupa , Jasmina Magdalenic , Stuart Bale

We report the properties of more than 600 bursts (including cluster-bursts) detected from the repeating fast radio burst (FRB) source FRB 20201124A with the Five-hundred-meter Aperture Spherical radio Telescope (FAST) during an extremely…

High Energy Astrophysical Phenomena · Physics 2023-01-04 D. J. Zhou , J. L. Han , B. Zhang , K. J. Lee , W. W. Zhu , D. Li , W. C. Jing , W. -Y. Wang , Y. K. Zhang , J. C. Jiang , J. R. Niu , R. Luo , H. Xu , C. F. Zhang , B. J. Wang , J. W. Xu , P. Wang , Z. L. Yang , Y. Feng

Solar radio emission features a large number of fine structures demonstrating great variability in frequency and time. We present spatially resolved spectral radio observations of type IIIb bursts in the $30-80$ MHz range made by the Low…

Solar and Stellar Astrophysics · Physics 2018-08-22 I. N. Sharykin , E. P. Kontar , A. A. Kuznetsov

Using centimeter wave and decimeter wave solar radio spectral observations of the flares of November 18, 2003 and September 12, 2004, we have discussed two type II like bursts at the meter waves. The radio bursts show that the ordinary…

Solar and Stellar Astrophysics · Physics 2020-09-30 Valery Fomichev , Gennady Chernov

This work reports a peculiar and interesting train of microwave type III pair bursts in the impulsive rising phase of a solar flare on 2011 September 26. The observations include radio spectrometers at frequency of 0.80 - 2.00 GHz, hard…

Solar and Stellar Astrophysics · Physics 2016-09-28 Baolin Tan , Marian Karlicky , Hana Meszarosova , Larisa Kashapova , Jing Huang , Yan Yan , Eduard P. Kontar

We studied a solar flare with pronounced quasi-periodic pulsations detected in the microwave, X-ray, and radio bands. We used the methods of correlation, Fourier, and wavelet analyses to examine the temporal fine structures and…

Solar and Stellar Astrophysics · Physics 2016-08-02 E. G. Kupriyanova , L. K. Kashapova , H. A. S. Reid , I. N. Myagkova

The Sun is an active source of radio emission which is often associated with the acceleration of electrons arising from processes such as solar flares and coronal mass ejections (CMEs). At low radio frequencies (<100 MHz), numerous solar S…

Solar and Stellar Astrophysics · Physics 2019-04-17 D. E. Morosan , P. T. Gallagher

Narrow band bursts appear on dynamic spectra from microwave to decametric frequencies as fine structures with very small duration and bandwidth. They are thought to mark small scale magnetic reconnection. We analyzed 27 metric type-IV…

Solar and Stellar Astrophysics · Physics 2016-01-27 C. Bouratzis , A. Hillaris , C. E. Alissandrakis , P. Preka-Papadema , X. Moussas , C. Caroubalos , P. Tsitsipis , A. Kontogeorgos

We report low frequency observations of the quasi-periodic, circularly polarized, harmonic type III radio bursts whose associated sunspot active regions were located close to the solar limb. The measured periodicity of the bursts at 80 MHz…

Solar and Stellar Astrophysics · Physics 2016-11-17 K. Sasikumar Raja , R. Ramesh

The Sun is an active star that often produces numerous bursts of electromagnetic radiation at radio wavelengths. Low frequency radio bursts have recently been brought back to light with the advancement of novel radio interferometers.…

Type III and type-III-like radio bursts are produced by energetic electron beams guided along coronal magnetic fields. As a variant of type III bursts, Type N bursts appear as the letter "N" in the radio dynamic spectrum and reveal a…

Solar and Stellar Astrophysics · Physics 2016-10-19 Xiangliang Kong , Yao Chen , Shiwei Feng , Guohui Du , Chuanyang Li , Artem Koval , V. Vasanth , Bing Wang , Fan Guo , Gang Li

Type II radio bursts are thought to be a signature of coronal shocks. In this paper, we analyze a short-lived type II burst that started at 07:40 UT on 2011 February 28. By carefully checking white-light images, we find that the type II…

Solar and Stellar Astrophysics · Physics 2015-05-20 W. Su , X. Cheng , M. D. Ding , P. F. Chen , J. Q. Sun

The analysis of narrowband drifting of type III-like structures in radio bursts dynamic spectra allows to obtain unique information about primary energy release mechanisms in solar flares. The SSRT spatially resolved images and a high…

Solar and Stellar Astrophysics · Physics 2015-06-05 N. S. Meshalkina , A. T. Altyntsev , D. A. Zhdanov , S. V. Lesovoi , A. A. Kochanov , Yan Yihua , Tan Chengming

A CALLISTO system was set up at the Arthur C Clarke Institute and connected to the e-CALLISTO global network which observes the solar radio bursts in 24 hours. CALLISTO is the foremost observation facility to investigate celestial objects…

Solar and Stellar Astrophysics · Physics 2023-08-04 J Adassuriya , S Gunasekera , KPSC Jayaratne , C Monstein

We present a detailed description of the interrelation between the Type III radio bursts and energetic phenomena associated with the flare activities in Active region AR 11158 at 07:58 UT on 2011, Feb. 15. The timing of the Type-III radio…

Solar and Stellar Astrophysics · Physics 2015-06-15 Naihwa Chen , Wing-Huen Ip , Davina Innes

We discuss properties of a Type IV burst, which was observed on 2017 September 6, as a result of the powerful flare X 9.3. At decameter wavelengths this burst was observed by the radio telescopes STEREO A, URAN-2, and NDA at frequencies 5 -…

The low-luminosity active galactic nucleus of M81 has been monitored at centimeter wavelengths since early 1993 as a by-product of radio programs to study the radio emission from Supernova 1993J. The extensive data sets reveal that the…

Astrophysics · Physics 2016-08-16 Luis C. Ho , Schuyler D. Van Dyk , Guy G. Pooley , Richard A. Sramek , Kurt W. Weiler

Context. Observations of solar type II radio bursts provide a unique opportunity to analyze the non-thermal electrons accelerated by coronal shocks and also to diagnose the plasma density distribution in the corona. However, there are very…

Solar and Stellar Astrophysics · Physics 2024-03-29 Peijin Zhang , Diana E. Morosan , Pietro Zucca , Sanna Normo , Bartosz Dabrowski , Andrzej Krankowski , Christian Vocks

Coronal mass ejections (CMEs) are major drivers of space weather in the Solar System, but their occurrence rate on other stars is unknown. A characteristic (deca-)metric radio burst with a time-frequency drift, known as a Type II radio…