论文标题
2019年4月初，在PSP围赛期间，III型和III型型频带的频段中的属性频段为8-80 MHz
Properties of Type III and Type IIIb Bursts in the Frequency Band of 8-80 MHz during PSP Perihelion at the Beginning of April 2019
论文作者
论文摘要
III型和IIIB型的特性在80 MHz的频带中爆发了8-80 MHz的频率，由乌克兰乌克兰乌克兰无线电干涉仪（URAN-2）（Poltava）（Poltava）和巨大的乌克兰乌克兰射线望远镜（GURT）（KHARKIV）（KHARKIV）（KHARKIV）在2019年4月在Parker Solar Prome（PSP）期间在2019年4月在2019年在Parker Solar Prome（PARKER SOLAR）上进行了讨论。这些对应于PSP在<19 MHz的频率下观察到的那些对应。我们分析了这些爆发的漂移速率和持续时间对频率的依赖。我们表明，如果源速度在IIIB型爆发和III型爆发的情况下，则漂移速率依赖于频率与从Newkirk Corona得出的频率符合，如果第一类是基本原理，而第二个则是其和声。但是，与Newkirk Corona的依赖性相比，所有观察依赖性都很夸张。我们假设这可能与从1.35到6.5太阳半径下的冠状温度降低时冠状温度有关。还获得了IIIIB型和III型型频率的持续依赖性在10-70 MHz范围内的频率。我们注意到，III型突发的持续时间和漂移速率及其对频率的依赖性与IIIB型爆发的频率基本不同。
Properties of type III and type IIIb bursts in the frequency band of 8-80 MHz observed by the radio telescopes Ukrainian Radio Interferometer of NASU-2 (URAN-2) (Poltava) and Giant Ukrainian Radio Telescope (GURT) (Kharkiv) during the Parker Solar Probe (PSP) perihelion in April 2019 are discussed. These correspond of those that were observed by PSP at frequencies <19 MHz. We analyze dependences of drift rates and durations on frequency for these bursts. We show that drift rate dependences on frequency agree well with those derived from the Newkirk corona if source velocities are between 0.17 and 0.2 c for both type IIIb bursts and type III bursts under the assumption that the first ones are fundamentals and the second ones are their harmonics. However, all observational dependences are flatter in comparison with the dependences for a Newkirk corona. We assume that this can be related with coronal temperature decreasing at heliocentric distances from 1.35 to 6.5 solar radii. Duration dependencies of type IIIb and type III bursts on frequency in the range of 10-70 MHz are also obtained. We note that the durations and drift rates of type III bursts as well as their dependences on frequency differ essentially from those for type IIIb bursts.
