Zobrazeno 1 - 10
of 378
pro vyhledávání: '"Nat Gopalswamy"'
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 273, Iss 2, p 36 (2024)
The INterplanetary Flux ROpe Simulator (INFROS) is an observationally constrained analytical model dedicated to forecasting the strength of the southward component ( Bz ) of the magnetic field embedded in interplanetary coronal mass ejections (ICMEs)
Externí odkaz:
https://doaj.org/article/5d282d39e158412993b54fb6d5f2c5a6
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 86 (2024)
Decameter hectometric (DH; 1–14 MHz) type IV radio bursts are produced by flare-accelerated electrons trapped in postflare loops or the moving magnetic structures associated with the coronal mass ejections (CMEs). From a space weather perspective,
Externí odkaz:
https://doaj.org/article/dedff0de21e94b87b419a2407f78597b
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 22 (2024)
During their propagation, coronal mass ejections (CMEs) and prominences sometimes display a nonradial motion. During the years after the solar minimum, the CME central position angle tended to be offset closer to the equator compared to that of the a
Externí odkaz:
https://doaj.org/article/8d7f544e48ba4558a1fddd7550b4b1bc
Autor:
Elizabeth A. Jensen, Nat Gopalswamy, Lynn B. Wilson, Lan K. Jian, Shing F. Fung, Teresa Nieves-Chinchilla, Marta Shelton, Lihua Li, Manohar Deshpande, Lloyd Purves, Joseph Lazio, Ward B. Manchester, Brian E. Wood, Jason E. Kooi, David B. Wexler, Stuart Bale, Alexei Pevtsov, Bernard V. Jackson, Megan N. Kenny
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
There continue to be open questions regarding the solar wind and coronal mass ejections (CMEs). For example: how do magnetic fields within CMEs and corotating/stream interaction regions (CIRs/SIRs) evolve in the inner heliosphere? What is the radiall
Externí odkaz:
https://doaj.org/article/3f143b2b35364dbba9f23cc3df356581
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 1, p L13 (2023)
It is known that the weak state of the heliosphere due to diminished solar activity in cycle 24 backreacted on coronal mass ejections (CMEs) to make them appear wider for a given speed. One of the consequences of the weak state of the heliosphere is
Externí odkaz:
https://doaj.org/article/37bcad4c064d440db470096ad2837233
Autor:
Jie Zhang, Manuela Temmer, Nat Gopalswamy, Olga Malandraki, Nariaki V. Nitta, Spiros Patsourakos, Fang Shen, Bojan Vršnak, Yuming Wang, David Webb, Mihir I. Desai, Karin Dissauer, Nina Dresing, Mateja Dumbović, Xueshang Feng, Stephan G. Heinemann, Monica Laurenza, Noé Lugaz, Bin Zhuang
Publikováno v:
Progress in Earth and Planetary Science, Vol 8, Iss 1, Pp 1-102 (2021)
Abstract This review article summarizes the advancement in the studies of Earth-affecting solar transients in the last decade that encompasses most of solar cycle 24. It is a part of the effort of the International Study of Earth-affecting Solar Tran
Externí odkaz:
https://doaj.org/article/45716f384e514ff9be458913daecc581
Autor:
Jason E. Kooi, David B. Wexler, Elizabeth A. Jensen, Megan N. Kenny, Teresa Nieves-Chinchilla, Lynn B. Wilson, Brian E. Wood, Lan K. Jian, Shing F. Fung, Alexei Pevtsov, Nat Gopalswamy, Ward B. Manchester
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
For decades, observations of Faraday rotation have provided unique insights into the plasma density and magnetic field structure of the solar wind. Faraday rotation (FR) is the rotation of the plane of polarization when linearly polarized radiation p
Externí odkaz:
https://doaj.org/article/af6a61faacb545ee8304539453ca6763
Autor:
Sandeep Kumar, Dinesha V. Hegde, Nandita Srivastava, Nikolai V. Pogorelov, Nat Gopalswamy, Seiji Yashiro
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 103 (2023)
Coronal mass ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties. This is because CMEs interact with the ambient solar wind and other large-scale magnetic field structures. In this work, we report on
Externí odkaz:
https://doaj.org/article/5e4586ea65324d5081ab4f52036be53c
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 1, p 59 (2023)
Coronal mass ejections (CMEs) can generate the most severe geomagnetic disturbances. One of the most critical factors affecting a CME’s geoeffectiveness is its trajectory. It is crucial to determine whether and when CME will hit Earth. It is common
Externí odkaz:
https://doaj.org/article/c06210be11eb42d69e62db4e7136f0f3
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 79 (2023)
The sustained gamma-ray emission (SGRE) from the Sun is a prolonged enhancement of >100 MeV gamma-ray emission that extends beyond the flare impulsive phase. The origin of the >300 MeV protons resulting in SGRE is debated, with both flares and shocks
Externí odkaz:
https://doaj.org/article/baa9dea7d51c4b30a495abd5ee7d3135