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Among the current challenges in Space Weather, one of the main ones is to forecast the internal magnetic configuration within Interplanetary Coronal Mass Ejections (ICMEs). Currently, a monotonic and coherent magnetic configuration observed…

太阳与恒星天体物理 · 物理学 2021-01-12 Luiz F. G. dos Santos , Ayris Narock , Teresa Nieves-Chinchilla , Marlon Nuñez , Michael Kirk

Small-scale interplanetary magnetic flux ropes (SMFRs) are similar to ICMEs in magnetic structure, but are smaller and do not exhibit ICME plasma signatures. We present a computationally efficient and GPU-powered version of the…

Interplanetary coronal mass ejections (ICMEs) are one of the main drivers for space weather disturbances. In the past, different approaches have been used to automatically detect events in existing time series resulting from solar wind in…

We have studied three Interplanetary Coronal Mass Ejections (ICMEs) having clear signatures of magnetic cloud (MC) arrival at 1 AU and their associated solar sources during 2011 to 2013. Comparing the axial magnetic field strength (B0) of…

太阳与恒星天体物理 · 物理学 2019-01-30 Ranadeep Sarkar , Nandita Srivastava

We report on an observationally constrained analytical model, the INterplanetary Flux ROpe Simulator (INFROS), for predicting the magnetic-field vectors of coronal mass ejections (CMEs) in the interplanetary medium. The main architecture of…

太阳与恒星天体物理 · 物理学 2020-01-29 Ranadeep Sarkar , Nat Gopalswamy , Nandita Srivastava

Interplanetary magnetic flux ropes (MFRs) are commonly observed structures in the solar wind, categorized as magnetic clouds (MCs) and small-scale MFRs (SMFRs) depending on whether they are associated with coronal mass ejections. We apply…

Geomagnetic disturbance forecasting is based on the identification of solar wind structures and accurate determination of their magnetic field orientation. For nowcasting activities, this is currently a tedious and manual process. Focusing…

空间物理 · 物理学 2022-02-22 Thomas Narock , Ayris Narock , Luiz F. G. Dos Santos , Teresa Nieves-Chinchilla

We have developed a new automated small-scale magnetic flux rope (SSMFR) detection algorithm based on the Grad-Shafranov (GS) reconstruction technique. We have applied this detection algorithm to the Wind spacecraft in-situ measurements…

太阳与恒星天体物理 · 物理学 2018-11-28 Qiang Hu , Jinlei Zheng , Yu Chen , Jakobus le Roux , Lulu Zhao

Interplanetary coronal mass ejections (ICMEs) are a significant feature of the heliospheric environment and the primary cause of adverse space weather at the Earth. ICME propagation, and the evolution of ICME magnetic field structure during…

空间物理 · 物理学 2019-05-20 S. W. Good , E. K. J. Kilpua , A. T. LaMoury , R. J. Forsyth , J. P. Eastwood , C. Möstl

The Parker Solar Probe (PSP) observed an interplanetary coronal mass ejection (ICME) event during its first orbit around the sun, among many other events. This event is analyzed by applying a wavelet analysis technique to obtain the reduced…

Small interplanetary magnetic flux ropes (SIMFRs) are often detected by space satellites in the interplanetary space near 1 AU. These ropes can be fitted by a cylindrically symmetric magnetic model. The durations of SIMFRsare usually <12 h,…

空间物理 · 物理学 2019-03-27 H. Q. Feng , G. Q. Zhao , J. M. Wang

Two populations of twisted magnetic field tubes, or flux ropes (hereafter, FRs), are detected by in situ measurements in the solar wind. While small FRs are crossed by the observing spacecraft within few hours, with a radius typically less…

太阳与恒星天体物理 · 物理学 2015-06-22 M. Janvier , P. Demoulin , S. Dasso

Interplanetary coronal mass ejections (ICMEs) are major drivers of space weather disturbances, posing risks to both technological infrastructure and human activities. Automatic detection of ICMEs in solar wind in situ data is essential for…

空间物理 · 物理学 2026-03-03 H. T. Rüdisser , G. Nguyen , J. Le Louëdec , E. E. Davies , C. Möstl

Decades of studies have suggested several criteria to detect Interplanetary coronal mass ejections (ICME) in time series from in-situ spacecraft measurements. Among them the most common are an enhanced and smoothly rotating magnetic field,…

The solar wind conditions at one astronomical unit (AU) can be strongly disturbed by the interplanetary coronal mass ejections (ICMEs). A subset, called magnetic clouds (MCs), is formed by twisted flux ropes that transport an important…

天体物理学 · 物理学 2009-11-13 S. Dasso , M. S. Nakwacki , P. Démoulin , C. H. Mandrini

The large-scale magnetic structure of interplanetary coronal mass ejections (ICMEs) has been shown to affect the galactic cosmic ray (GCR) flux measured in situ by spacecraft, causing temporary decreases known as Forbush decreases (Fds). In…

A key aim in space weather research is to be able to use remote-sensing observations of the solar atmosphere to extend the lead time of predicting the geoeffectiveness of a coronal mass ejection (CME). In order to achieve this, the magnetic…

太阳与恒星天体物理 · 物理学 2017-02-16 Erika Palmerio , Emilia K. J. Kilpua , Alexander W. James , Lucie M. Green , Jens Pomoell , Alexey Isavnin , Gherardo Valori

The INterplanetary Flux ROpe Simulator (INFROS) is an observationally constrained analytical model dedicated for forecasting the strength of the southward component (Bz) of the magnetic field embedded in interplanetary coronal mass…

太阳与恒星天体物理 · 物理学 2024-06-14 Ranadeep Sarkar , Nandita Srivastava , Nat Gopalswamy , Emilia Kilpua

Interplanetary coronal mass ejections (ICMEs) observed by the MESSENGER (MES) and Venus Express (VEX) spacecraft have been catalogued and analysed. The ICMEs were identified by a relatively smooth rotation of the magnetic field direction…

空间物理 · 物理学 2016-01-20 S. W. Good , R. J. Forsyth

Interplanetary Coronal Mass Ejections (ICMEs) are the primary sources of geomagnetic storms at Earth. Negative out-of-ecliptic component (Bz) of magnetic field in the ICME or its associated sheath region is necessary for it to be…

太阳与恒星天体物理 · 物理学 2025-02-04 Talwinder Singh , Dinesha V. Hegde , Tae K. Kim , Nikolai V. Pogorelov
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