Results 71 to 80 of about 606 (135)

Dynamic Motion of Microwave Bursts during a Solar Limb Flare

The Astrophysical Journal
The SOL2013-10-28T02:02:58L133C110 flare occurred on the western limb, acquiring the GOES class of X1.0, and we focus on an oscillatory phenomenon detected at 34 GHz by the Nobeyama Radioheliograph (NoRH) during this flare.
Sujin Kim, Jeongwoo Lee, Sung-Hong Park, Su-Chan Bong, Satoshi Masuda   +4 more
doaj   +1 more source

Microwave observations of a large-scale coronal wave with the Nobeyama radioheliograph

, 2016
Context. Large-scale globally propagating waves in the solar corona have been studied extensively, mainly using extreme ultraviolet (EUV) observations.
K. Shibasaki, A. Warmuth, K. Iwai, G. Mann   +3 more
core   +1 more source

Dual-perspective Microwave and Hard X-Ray Constraints of Asymmetric Nonthermal Loops in an X-class Flare

The Astrophysical Journal Letters
We report dual-perspective microwave and hard X-ray (HXR) observations of an X-class flare on 2024 May 15, taking advantage of the unique geometry of a front-side view from the Earth and a back-side perspective from the Solar Orbiter.
Ruifei Huang, Yao Chen, Victor Melnikov, Alexey Kuznetsov, Zhao Wu, Dmitriy Smirnov, Sergey Anfinogentov, Feiyu Yu, Xiangliang Kong, Ze Zhong, Mingzhe Guo, Hao Ning   +11 more
doaj   +1 more source

A solar jet-induced perturbation propagating through coronal loops and in-loop electron beam transport as indicated by type II and type N radio bursts

Astronomy & Astrophysics
Aims. Solar type II radio bursts are commonly attributed to coronal shocks driven by coronal mass ejections (CMEs). However, some metric type II bursts have occasionally been reported to occur in the absence of a CME and to be associated with weak solar ...
Cui Yingli, Kong Xiangliang, Li Zhentong, Wang Bing, Duan Yadan, Zhong Ze, Ning Hao, Wu Zhao, Wang Manqing, Liu Yang, Yu Feiyu, Jiang Zelong, Chen Wei, Su Yang, Chen Yao   +14 more
doaj   +1 more source

A multi-periodic oscillatory event in a solar flare [PDF]

, 2008
Aims. Ratios of different significant periods found in the light curves of a solar flare exhibiting quasi-periodic pulsations (QPP) are used to distinguish between the possible physical mechanisms responsible for such periodic behaviour. Methods.
V. M. Nakariakov, Inglis, Andrew R., Nakariakov, V. M. (Valery M.), A. R. Inglis   +3 more
core   +1 more source

A Nonthermal Collimated Ejection Observed with the Nobeyama Radioheliograph

The Astrophysical Journal, 2002
We have observed with the Nobeyama Radioheliograph a microwave collimated ejection that moved up to 1.3 × 105 km above the solar limb at an average speed of ≈3000 km s-1. Although the Yohkoh soft X-ray telescope pointed to another active region and therefore no soft X-ray data was available, the apparent length and width of the ejection were consistent
H. Nakajima, T. Yokoyama
openaire   +1 more source

Microwave Polar Brightening and Its Connection to Polar Coronal Holes

The Astrophysical Journal
Polar brightening (PB) observed at microwave frequencies serves as an important probe to study the thermal and magnetic properties in the Sun’s polar regions.
Rohan Bose, Anshu Kumari, Vaibhav Pant, Srinjana Routh, Divya Paliwal, M. V. Sunil Krishna   +5 more
doaj   +1 more source

From Nobeyama Radio Observatory to the international project ALMA -Evolution of millimeter and submillimeter wave astronomy in Japan. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2022
Ishiguro M, Chiba K, Sakamoto S.
europepmc   +1 more source

Australian Journal of Physics Astrophysical Supplements

, 1973
A description of nine moving type IV radio events is given, which completes the description of 24 such events observed with the 80 MHz Culgoora radioheliograph between September 1968 and November 1971.
EJ Schmahl
core   +1 more source

Magneto-thermal Coupling and Coronal Heating in Solar Active Regions Inferred from Microwave Observations

The Astrophysical Journal
The solar corona is much hotter than the photosphere and chromosphere, but the physical mechanism responsible for heating the coronal plasma remains unidentified. The thermal microwave emission, which is produced in a strong magnetic field above sunspots,
Alexey A. Kuznetsov, Gregory D. Fleishman, Gelu M. Nita, Sergey A. Anfinogentov   +3 more
doaj   +1 more source