Zobrazeno 1 - 10
of 2 598
pro vyhledávání: '"Gopalswamy"'
Coronal Mass Ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties as they interact with the variable solar wind. We investigated the heliospheric propagation of 15 Earth-impacting CMEs observed during
Externí odkaz:
http://arxiv.org/abs/2411.01165
Autor:
Gopalswamy, Nat
Solar Energetic Particles (SEPs) and radio bursts are indicators of particle acceleration on the Sun and in the heliosphere. The accelerated particles have energies significantly higher than thermal particles up to several orders of magnitude. SEPs a
Externí odkaz:
http://arxiv.org/abs/2410.08690
Autor:
Yogesh, Gopalswamy, N., Chakrabarty, D., Mostafavi, Parisa, Yashiro, Seiji, Srivastava, Nandita, Ofman, Leon
The abundance of helium ($A_{He}$) in the solar wind exhibits variations typically in the range from 2-5% with respect to solar cycle activity and solar wind velocity. However, there are instances where the observed $A_{He}$ is exceptionally low ($<$
Externí odkaz:
http://arxiv.org/abs/2410.04713
Coronal mass ejection (CME) often produces a soft X-ray (SXR) flare associated with the low-coronal reconnection and a type-II radio burst associated with an interplanetary (IP) CME-shock. SXR flares and type-II bursts outshine the background emissio
Externí odkaz:
http://arxiv.org/abs/2410.00814
The type-IV bursts, associated with coronal mass ejections (CMEs), occasionally extend to the decameter-hectrometric (DH) range. We present a comprehensive catalog of simultaneous multi-vantage point observations of DH type-IV bursts by Wind and STER
Externí odkaz:
http://arxiv.org/abs/2410.00787
Autor:
Viswakethu Velavan, Rajagopal Rangeshwaran, Gopalswamy Sivakumar, T. O. Sasidharan, Ramachandran Sundararaj, Aravindaram Kandan
Publikováno v:
Egyptian Journal of Biological Pest Control, Vol 31, Iss 1, Pp 1-12 (2021)
Abstract Background Thirty-six entomopathogenic fungi (EPF) were isolated from soil and insect cadaver samples, collected from different forest types, viz., wet evergreen, moist deciduous, dry deciduous and scrub type in South India. Partial sequence
Externí odkaz:
https://doaj.org/article/fa7d9936c71c4d5e9fdbdbd95cf589dc
Publikováno v:
A&A 691, L8 (2024)
Coronal mass ejections (CMEs) are often associated with X-ray (SXR) flares powered by magnetic reconnection in the low-corona, while the CME shocks in the upper corona and interplanetary (IP) space accelerate electrons often producing the type-II rad
Externí odkaz:
http://arxiv.org/abs/2409.19145
Autor:
Jin, Meng, Li, Gang, Nitta, Nariaki, Liu, Wei, Petrosian, Vahe, Manchester, Ward, Cohen, Christina, Effenberger, Frederic, Ding, Zheyi, Pesce-Rollins, Melissa, Omodei, Nicola, Gopalswamy, Nat
Shocks driven by coronal mass ejections (CMEs) are primary drivers of gradual solar energetic particle (SEP) events, posing significant risks to space technology and astronauts. Concurrently, particles accelerated at these shocks may also propagate b
Externí odkaz:
http://arxiv.org/abs/2409.18020
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