Zobrazeno 1 - 10
of 252
pro vyhledávání: '"Gopalswamy, Nat"'
Autor:
Gopalswamy, Nat, Michalek, Grzegorz, Yashiro, Seiji, Makela, Pertti, Akiyama, Sachiko, Xie, Hong
We assess the relative strength of solar cycle (SC) 25 with respect to SCs 23 and 24 based on the abundance of halo coronal mass ejections (CMEs). We make use of the halo CME database (https://cdaw.gsfc.nasa.gov/CME_list/halo/halo.html) to compare th
Externí odkaz:
http://arxiv.org/abs/2407.04548
Autor:
Gopalswamy, Nat, Michałek, Grzegorz, Yashiro, Seiji, Mäkelä, Pertti, Akiyama, Sachiko, Xie, Hong, Vourlidas, Angelos
This paper provides an update on the coronal mass ejection (CME) catalog maintained at the CDAW Data Center, NASA Goddard Space Flight Center (https://cdaw.gsfc.nasa.gov/CME_list). This is version 2 (v2) of the Catalog that has been made as the defau
Externí odkaz:
http://arxiv.org/abs/2407.04165
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 ejections (ICMEs).
Externí odkaz:
http://arxiv.org/abs/2406.09247
Decameter hectometric (DH; 1-14 MHz) type-IV radio bursts are produced by flare-accelerated electrons trapped in post-flare loops or the moving magnetic structures associated with the CMEs. From a space weather perspective, it is important to systema
Externí odkaz:
http://arxiv.org/abs/2406.00194
Autor:
Kumar, Sandeep, Hegde, Dinesha V., Srivastava, Nandita, Pogorelov, Nikolai V., Gopalswamy, Nat, Yashiro, Seiji
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:
http://arxiv.org/abs/2310.04023
We report on the close similarity of coronal mass ejection (CME) properties in ground level enhancement (GLE) in solar energetic particle (SEP) events and sustained gamma ray emission (SGRE) from the Sun as indicated by low frequency type III radio b
Externí odkaz:
http://arxiv.org/abs/2308.11779
Autor:
Gopalswamy, Nat, Michalek, Grzegorz, Yashiro, Seiji, Mäkelä, Pertti, Akiyama, Sachiko, Xie, Hong
It is known that the weak state of the heliosphere due to diminished solar activity in cycle 24 back-reacted 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:
http://arxiv.org/abs/2306.06633
We report on the solar source of the 2022 February 3 geomagnetic storm of moderate strength that contributed to the loss of 39 Starlink satellites. The geomagnetic storm was caused by the 2022 January 29 halo coronal mass ejection (CME) that was of m
Externí odkaz:
http://arxiv.org/abs/2303.02330
Autor:
Gopalswamy, Nat
Publikováno v:
Atmosphere 2022, 13(11), 1781
The explosion of space weather research since the early 1990s has been partly fueled by the unprecedented, uniform, and extended observations of solar disturbances from space and ground based instruments. Coronal mass ejections (CMEs) from closed mag
Externí odkaz:
http://arxiv.org/abs/2211.06775
Autor:
Dagnew, Fithanegest Kassa, Gopalswamy, Nat, Tessema, Solomon Belay, Akiyama, Sachiko, Yashiro, Seiji
The culmination of solar cycle 24 by the end of 2019 has created the opportunity to compare the differing properties of coronal mass ejections (CMEs) between two whole solar cycles: Solar cycle 23 (SC 23) and Solar cycle 24 (SC 24). We report on the
Externí odkaz:
http://arxiv.org/abs/2208.03536