Zobrazeno 1 - 10
of 288
pro vyhledávání: '"Ying D. Liu"'
Publikováno v:
The Astrophysical Journal Letters, Vol 975, Iss 2, p L41 (2024)
The acceleration of the young solar wind is studied using the first 17 encounters of the Parker Solar Probe. We identify wind intervals from different source regions: coronal hole (CH) interiors, streamers, and low-Mach-number boundary layers (LMBLs)
Externí odkaz:
https://doaj.org/article/bd4adee2794144898f21ddebad668362
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 1, p L8 (2024)
The largest geomagnetic storm in two decades occurred in 2024 May with a minimum D _st of −412 nT. We examine its solar and interplanetary origins by combining multipoint imaging and in situ observations. The source active region, NOAA AR 13664, ex
Externí odkaz:
https://doaj.org/article/20f30c22aed9418e9f8220fd4f6251c4
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 1, p L4 (2024)
On 2022 March 28 two successive coronal mass ejections (CMEs) were observed by multiple spacecraft and resulted in a magnetic cloud (MC) at 1 au. We investigate the propagation and interaction properties of the two CMEs correlated with the MC using c
Externí odkaz:
https://doaj.org/article/2686eb08643149ac8f4fdc7ed5a26d4c
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 9 (2024)
We select and investigate six global solar extreme-ultraviolet (EUV) wave events using data from the Solar Dynamics Observatory and the Solar and Heliospheric Observatory. These eruptions are all on the limb but recorded as halo coronal mass ejection
Externí odkaz:
https://doaj.org/article/f9838aab85de46b89f56ac67c08ea36d
Autor:
Xiaowei Zhao, Jingsong Wang, Mingxian Zhao, Ying D. Liu, Huidong Hu, Mingzhe Liu, Tian Mao, Qiugang Zong
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 133 (2024)
We develop a preliminary interplanetary disturbance index ( J ${}_{{\rm{s}}}^{{\rm{W}}}$ ) by applying the spectral whitening method to an energy coupling function with solar wind measurements during the years 1998–2014 as the input, which can be u
Externí odkaz:
https://doaj.org/article/fb13c28ef5a244c192d2df4ef7aa9512
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 58 (2024)
We identify and examine the solar wind intervals near the sonic critical point (i.e., M _S ∼ 1) observed by the Parker Solar Probe. The near-subsonic wind intervals show similar properties: a low density, an extremely low velocity, a low proton tem
Externí odkaz:
https://doaj.org/article/1ad7c146f19b4fa78eaaf737a2a725b3
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 82 (2024)
Data obtained from Parker Solar Probe (PSP) since 2021 April have shown the first in situ observation of the solar corona, where the solar wind is formed and accelerated. Here, we investigate the alpha-proton differential flow and its characteristics
Externí odkaz:
https://doaj.org/article/e95bca5ba19c4c4a8016675e6769ef9a
Autor:
Ying D. Liu, Bei Zhu, Hao Ran, Huidong Hu, Mingzhe Liu, Xiaowei Zhao, Rui Wang, Michael L. Stevens, Stuart D. Bale
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 85 (2024)
We report on the first direct in situ measurements of a fast coronal mass ejection (CME) and shock in the corona, which occurred on 2022 September 5. In situ measurements from the Parker Solar Probe spacecraft near perihelion suggest two shocks, with
Externí odkaz:
https://doaj.org/article/152f6858683647a7bcf4c6b01b4ca633
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 2, p L29 (2023)
Small-scale eruptions could play an important role in coronal heating, generation of solar energetic particles (SEPs), and mass source of the solar wind. However, they are poorly observed, and their characteristics, distributions, and origins remain
Externí odkaz:
https://doaj.org/article/4ba7c3d3c80f4479b765a3b564d6bd35
Publikováno v:
Earth and Planetary Physics, Vol 5, Iss 3, Pp 223-231 (2021)
Voyager 1 occasionally detected sudden jumps of the local interstellar magnetic field strength since its heliopause crossing in August 2012. These events were believed to be associated with outward propagating solar wind shocks originating in the inn
Externí odkaz:
https://doaj.org/article/dc2475401cd44b4f8ca0bfb3523893e3