Chong Chen

Geostationary Orbit Responses to the CME‐Pileup Superstorm on 10 May 2024: Multi‐Satellite Observations

Xiaojing Sun, Yixin Hao, Dianjun Zhang, Chong Chen et autres

Abstract The extreme geomagnetic storm of 10 May 2024, driven by the interplanetary pileup and merger of multiple coronal mass ejections (CMEs), provides a unique opportunity to investigate the global, local‐time‐resolved response of the geostationary (GEO) environment. Using coordinated observations from GOES‐16 …

cn, de (code pays fourni par la source)

Limb Observations of Global Solar Coronal Extreme-ultraviolet Wavefronts: The Inclination, Kinematics, Coupling with the Expanding Coronal Mass Ejections, and Connection with the Coronal Mass Ejection Driven Shocks

Huidong Hu, Bei Zhu, Ying D. Liu, Chong Chen et autres

Abstract 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 ejections (CMEs) because the …

A Pileup of Coronal Mass Ejections Produced the Largest Geomagnetic Storm in Two Decades

Ying D. Liu, Huidong Hu, Xiaowei Zhao, Chong Chen et autres

Abstract 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, …

A Pileup of Coronal Mass Ejections Produced the Largest Geomagnetic Storm in Two Decades

Ying D. Liu, Huidong Hu, Xiaowei Zhao, Chong Chen et autres

The largest geomagnetic storm in two decades occurred in 2024 May with a minimum $D_{\rm st}$ 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, exhibited …

Formation of a Magnetic Cloud from the Merging of Two Successive Coronal Mass Ejections

Chong Chen, Ying D. Liu, Bei Zhu, Huidong Hu et autres

Abstract 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 …

The Alpha-proton Differential Flow in the Alfvénic Young Solar Wind: from Sub-Alfvénic to Super-Alfvénic

Hao Ran, Ying D. Liu, Chong Chen, Parisa Mostafavi

Abstract 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 across the …

cn, us (code pays fourni par la source)

The Alpha-Proton Differential Flow in the Alfvénic Young Solar Wind: From Sub-Alfvénic to Super-Alfvénic

Hao Ran, Ying D. Liu, Chong Chen, Parisa Mostafavi

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 across the critical …

Multispacecraft Remote Sensing and In Situ Observations of the 2020 November 29 Coronal Mass Ejection and Associated Shock: From Solar Source to Heliospheric Impacts

Chong Chen, Ying D. Liu, Bei Zhu

Abstract We investigate the source eruption, propagation and expansion characteristics, and heliospheric impacts of the 2020 November 29 coronal mass ejection (CME) and associated shock, using remote sensing and in situ observations from multiple spacecraft. A potential-field source-surface model is employed to …

cn (code pays fourni par la source)

Macro Magnetic Holes Caused by Ripples in Heliospheric Current Sheet from Coordinated Imaging and Parker Solar Probe Observations

Chong Chen, Ying D. Liu, Huidong Hu

Abstract Macro magnetic holes (MMHs), which are significant magnetic field decreases in the solar wind lasting tens of minutes, were found during the first four orbits of the Parker Solar Probe (PSP). We performed a detailed analysis of the 2020 January 30 …

cn (code pays fourni par la source)