Results 51 to 60 of about 5,952,631 (141)

Prediction for Arrival Time and Parameters of Corotation Interaction Regions using Earth–Mars Correlated Events from Tianwen-1, MAVEN, and Wind Observations

The Astrophysical Journal
Using the Stream Interaction Regions list from the Tianwen-1/Mars Orbiter Magnetometer (MOMAG) data between 2021 November and 2021 December and from Wind observations, we present an accurate prediction for the arrival time and in situ parameters of ...
Zhihui Zhong, Chenglong Shen, Yutian Chi, Dongwei Mao, Bin Miao, Zhiyi Fu, Junyan Liu, Beatriz Sánchez-Cano, Daniel Heyner, Yuming Wang   +9 more
doaj   +1 more source

Unraveling the Fine‐Scale Tapestry of Solar Wind at 1AU

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Solar wind is a complex network of distinct magnetic flux tubes, each contained and separated by a current sheet. In this study, more than 50,000 current sheets in the solar wind are identified and characterized for the first time, using multi‐point Cluster observations during solar minimum and maximum intervals.
M. Akhavan‐Tafti, S. Kumar, A. Szabo, B. Grison   +3 more
wiley   +1 more source

Deterministic Propagation of Suprathermal Ions Through the Heliosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The PEPSSI instrument onboard New Horizons is sampling the energy range that bridges pickup and suprathermal He+ ${\mathrm{H}\mathrm{e}}^{+}$ ions for the first time in the outer heliosphere. New Horizons repeatedly encountered structures beyond 30 au that we interpret as the spiral of a corotating interaction region (CIR) for an extended ...
P. Kollmann, E. C. Roelof, M. E. Hill, R. B. Decker, P. Brandt, R. L. McNutt Jr., P. S. Mostafavi, R. Nikoukar, J. W. Parker, K. N. Singer, J. Spencer, A. Stern, A. J. Verbiscer   +12 more
wiley   +1 more source

"Corotating Interaction Region (CIR)", "Interaction Region", "Stream Interaction Region (SIR)", which term should be used?

Abstract. We discuss the history of quasiperiodic ~27-day recurrent geomagnetic activity and the origin of the names "interaction region", "corotating interaction region" and "stream interaction region". The latter three names have an identical meaning.
Bruce T. Tsurutani, Rajkumar Hajra, Gurbax S. Lakhina   +2 more
openaire   +1 more source

A Semi‐empirical Framework for Dst Prediction Based on Global MHD Simulation of Earth's Magnetosphere

Space Weather, Volume 24, Issue 6, June 2026.
Abstract This study develops a semi‐empirical framework for Dst index forecasting by integrating the PPMLR‐MHD model of Earth's magnetosphere with four established empirical models (Burton, UCB, AK2, and Wang). The framework partitions the physics: global magnetopause and tail currents are simulated by MHD, while the ring current contribution is ...
Jiawen Yue, Xiaocheng Guo, Yuxian Wang, Jianguang Guo, Weiguo Zong, Tian Mao, Chi Wang   +6 more
wiley   +1 more source

Data Coverage Dependence of Interplanetary Scintillation Tomography: Insights from Carrington Rotation 2075

The Astrophysical Journal
Interplanetary scintillation (IPS) tomography is a key technique for probing the three-dimensional structures of the inner heliosphere and for space weather forecasting.
Ming Xiong, Yanchen Gao, Xueshang Feng, Huichao Li, Man Zhang, Liping Yang, Xinhua Zhao, Fang Shen, Wenshuai Cheng   +8 more
doaj   +1 more source

“Corotating Interaction Regions (CIRs)”, “Interaction Regions (IRs)” and “Stream Interaction Regions (SIRs)”, which term should be used?

Abstract. We discuss the early history of quasiperiodic ~27-day recurrent geomagnetic activity starting with Maunder (1904, 1905), Chree (1913) and Bartels (1932, 1934), and the Bartels term “M-regions”. We show the iconic “interaction region (IR)” schematic of Belcher and Davis (1971) and the further development of Smith and Wolfe (1976) and the term “
Bruce T. Tsurutani, Rajkumar Hajra, Gurbax S. Lakhina   +2 more
openaire   +2 more sources

Nitric Oxide Radiative Relaxation Time: Damping Timescales of Lower Thermospheric Thermal Perturbations

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Nitric oxide (NO) radiative cooling governs much of the energy budget in the Earth's lower thermosphere and damps out temperature perturbations. The radiative relaxation time (RRT), the timescale that defines how efficiently infrared radiation damps out the perturbations to the thermal structure to 1/e of the perturbation's initial value, is ...
Ningchao Wang, Martin G. Mlynczak, John T. Emmert, Manuel López‐Puertas, Bernd Funke   +4 more
wiley   +1 more source

Multispecies Energetic Particle Acceleration Associated with CIR and ICME-driven Shocks

The Astrophysical Journal
A multispecies energetic particle intensity enhancement event at 1 au is analyzed. We identify this event as a corotating interaction region (CIR) structure that includes a stream interface (SI), a forward-reverse shock pair, and an embedded heliospheric
Ashok Silwal, Lingling Zhao, Gary P. Zank, Bingbing Wang, Alexander Pitña, Sujan Prasad Gautam, Byeongseon Park, Masaru Nakanotani, Xingyu Zhu   +8 more
doaj   +1 more source

Storm‐Time Dst Forecast: An Innovative Approach

Space Weather, Volume 24, Issue 5, May 2026.
Abstract One of the most persistent challenges in the space weather field is predicting the storm‐time response of the geospace without knowing the predicted drivers in the solar wind. Here, a new pattern recognition algorithm is developed to predict storm‐time Dst index from 1 hr to ∼4.5 days into the future. Storm‐time Dst patterns (or reference Dst)
Yongliang Zhang, Larry J. Paxton
wiley   +1 more source