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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 have investigated the flux density between $125$kHz and $16$MHz.…

太阳与恒星天体物理 · 物理学 2014-10-09 V. Krupar , M. Maksimovic , O. Santolik , E. P. Kontar , B. Cecconi , S. Hoang , O. Kruparova , J. Soucek , H. Reid , A. Zaslavsky

We report the results of a low frequency radio variability and slow transient search using archival observations from the Very Long Array. We selected six 325 MHz radio observations from the spring of 2006, each centered on the…

高能天体物理现象 · 物理学 2015-06-04 T. R. Jaeger , S. D. Hyman , N. E. Kassim , T. J. W. Lazio

We report and examine the observation of an unusual and rare in-situ electron observation associated with a solar type III radio burst on 24 December 1996. This radio event was accompanied by high energy electrons, measured by the Solid…

Tau Boo is an intriguing planet-host star that is believed to undergo magnetic cycles similar to the Sun, but with a duration that is about one order of magnitude smaller than that of the solar cycle. With the use of observationally derived…

太阳与恒星天体物理 · 物理学 2015-06-04 A. A. Vidotto , R. Fares , M. Jardine , J. F. Donati , M. Opher , C. Moutou , C. Catala , T. I. Gombosi

The STEREO/WAVES (SWAVES) experiment on board the two STEREO spacecraft (Solar Terrestrial Relations Observatory) launched on 25 October 2006 is dedicated to the measurement of the radio spectrum at frequencies between a few kilohertz and…

天体物理仪器与方法 · 物理学 2015-08-27 M. Panchenko , W. Macher , H. O. Rucker , G. Fischer , T. H. Oswald , B. Cecconi , M. Maksimovic

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…

太阳与恒星天体物理 · 物理学 2019-10-23 Alexey Kuznetsov , Eduard Kontar

We report the detection of radio emission and orbital motion from the nearby star-brown dwarf binary WISE J072003.20-084651.2AB. Radio observations across the 4.5-6.5 GHz band with the Very Large Array identify at the position of the system…

太阳与恒星天体物理 · 物理学 2015-08-27 Adam J. Burgasser , Carl Melis , Jacob Todd , Christopher R. Gelino , Gregg Hallinan , Daniella Bardalez Gagliuffi

We analyzed 64 radio observations at the frequency of 8.4 GHz of the Wolf-Rayet star WR 112, taken from the Very Large Array archive. These observations cover a time baseline of 13 years, from June 2000 to July 2013. The radio structure of…

太阳与恒星天体物理 · 物理学 2014-09-24 J. O. Yam , S. A. Dzib , L. F. Rodríguez , V. Rodríguez-Gómez

Type III solar radio storms, observed at frequencies below approximately 16 MHz by space borne radio experiments, correspond to the quasi-continuous, bursty emission of electron beams onto open field lines above active regions. The…

太阳与恒星天体物理 · 物理学 2015-05-14 J. P. Eastwood , M. S. Wheatland , H. S. Hudson , S. Krucker , S. D. Bale , M. Maksimovic , K. Goetz , J. -L. Bougeret

Fast radio bursts (FRBs) are millisecond-duration radio bursts with unidentified extra-galactic origin. Some FRBs exhibit mild magneto-ionic environmental variations, possibly attributed to plasma turbulence or binary configuration. We…

The systematic monitoring of the solar wind in high-cadence and high-resolution heliospheric images taken by the Solar-Terrestrial Relation Observatory (STEREO) spacecraft permits the study of the spatial and temporal evolution of variable…

Fast radio bursts (FRBs) are millisecond-duration, extragalactic radio flashes of unknown physical origin. FRB 121102, the only known repeating FRB source, has been localized to a star-forming region in a dwarf galaxy at redshift z = 0.193,…

Observation of Interplanetary Scintillation (IPS) provides an important and effective way to study the solar wind and the space weather. A series of IPS observations were conducted by the Five-hundred-meter Aperture Spherical radio…

太阳与恒星天体物理 · 物理学 2022-08-03 Li-Jia Liu , Bo Peng , Lei Yu , Bin Liu , Ji-Guang Lu , Ye-Zhao Yu , Hong-Wei Xi , Ming Xiong , O. Chang

Solar energetic particles such as electrons can be accelerated to mildly-relativistic velocities in the solar corona. These electrons travel through the turbulent corona generating radio waves, which are then severely affected by…

An intense type IV radio burst was observed by the STEREO Behind (STB) spacecraft located about 144 degres behind Earth. The burst was associated with a large solar eruption that occurred on the backside of the Sun (N05E151) close to the…

太阳与恒星天体物理 · 物理学 2016-05-10 Nat Gopalswamy , Sachiko Akiyama , Pertti Mäkelä , Seiji Yashiro , Iver H. Cairns

Analysis of the radio tracking data from the Pioneer 10/11 spacecraft at distances between about 20 - 70 AU from the Sun has consistently indicated the presence of an unmodeled, small, constant, Doppler blue shift drift of order 6 \times…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Michael Martin Nieto , John D. Anderson

We present a statistical analysis of 60 strong large-scale EUV wave events that occurred during January 2007 to February 2011 with the STEREO twin spacecraft regarding their kinematical evolution and wave pulse characteristics. For the…

太阳与恒星天体物理 · 物理学 2015-06-22 Nicole Muhr , Astrid Maria Veronig , Ines Waltraud Kienreich , Bojan Vrsnak , Manuela Temmer , Bianca Maria Bein

Solar and interplanetary radio bursts can reflect the existence and motion of energetic electrons and are therefore a kind of vital phenomenon in solar activities. The present study reported a solar radio burst (SRB) event observed by…

太阳与恒星天体物理 · 物理学 2024-06-18 Bing Ma , Ling Chen , De-Jin Wu , Marc Pulupa , Stuart D. Bale

The Doppler shift of a radio signal is caused by the relative motion between the transmitter and receiver. The change in frequency of the signal over time is called drift rate. In the studies of radio SETI (Search for Extraterrestrial…

天体物理仪器与方法 · 物理学 2022-10-14 Jian-Kang Li , Haichen Zhao , Zhenzhao Tao , Tong-Jie Zhang , Sun Xiaohui
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