Zobrazeno 1 - 10
of 125
pro vyhledávání: '"N. Arge"'
Autor:
Abhishek K. Srivastava, Scott W. McIntosh, N. Arge, Dipankar Banerjee, Mausumi Dikpati, Bhola N. Dwivedi, Madhulika Guhathakurta, B.B. Karak, Robert J. Leamon, Shibu K. Matthew, Andres Munoz-Jaramillo, D. Nandy, Aimee Norton, L. Upton, S. Chatterjee, Rakesh Mazumder, Yamini K. Rao, Rahul Yadav
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 5 (2018)
In 1844 Schwabe discovered that the number of sunspots increased and decreased over a period of about 11 years, that variation became known as the sunspot cycle. Almost eighty years later, Hale described the nature of the Sun's magnetic field, identi
Externí odkaz:
https://doaj.org/article/65cbb81bdb034ac1a604775b78363008
Autor:
E. Samara, C. N. Arge, R. F. Pinto, J. Magdalenić, N. Wijsen, M. L. Stevens, L. Rodriguez, S. Poedts
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 83 (2024)
We employ Parker Solar Probe (PSP) observations during the latest solar minimum period (years 2018–2021) to calibrate the version of the Wang–Sheeley–Arge (WSA) coronal model used in the European Heliospheric Forecasting Information Asset (EUHF
Externí odkaz:
https://doaj.org/article/d5d52bf50f7a4729a5203ae0dfc2fce6
Autor:
Eleanna Asvestari, Manuela Temmer, Ronald M. Caplan, Jon A. Linker, Stephan G. Heinemann, Rui F. Pinto, Carl J. Henney, Charles N. Arge, Mathew J. Owens, Maria S. Madjarska, Jens Pomoell, Stefan J. Hofmeister, Camilla Scolini, Evangelia Samara
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 45 (2024)
A plethora of coronal models, from empirical to more complex magnetohydrodynamic (MHD) ones, are being used for reconstructing the coronal magnetic field topology and estimating the open magnetic flux. However, no individual solution fully agrees wit
Externí odkaz:
https://doaj.org/article/ac2f1e1828064f5db476d94c8df92686
Autor:
Stephan G. Heinemann, Mathew J. Owens, Manuela Temmer, James A. Turtle, Charles N. Arge, Carl J. Henney, Jens Pomoell, Eleanna Asvestari, Jon A. Linker, Cooper Downs, Ronald M. Caplan, Stefan J. Hofmeister, Camilla Scolini, Rui F. Pinto, Maria S. Madjarska
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 151 (2024)
Coronal holes are recognized as the primary sources of heliospheric open magnetic flux (OMF). However, a noticeable gap exists between in situ measured OMF and that derived from remote-sensing observations of the Sun. In this study, we investigate th
Externí odkaz:
https://doaj.org/article/7fe24ffb1b0c45418f56a2fdfe93203a
Autor:
Martin A. Reiss, Karin Muglach, Emily Mason, Emma E. Davies, Shibaji Chakraborty, Veronique Delouille, Cooper Downs, Tadhg M. Garton, Jeremy A. Grajeda, Amr Hamada, Stephan G. Heinemann, Stefan Hofmeister, Egor Illarionov, Robert Jarolim, Larisza Krista, Chris Lowder, Erwin Verwichte, Charles N. Arge, Laura E. Boucheron, Claire Foullon, Michael S. Kirk, Alexander Kosovichev, Andrew Leisner, Christian Möstl, James Turtle, Astrid Veronig
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 1, p 6 (2024)
Automated detection schemes are nowadays the standard approach for locating coronal holes in extreme-UV images from the Solar Dynamics Observatory (SDO). However, factors such as the noisy nature of solar imagery, instrumental effects, and others mak
Externí odkaz:
https://doaj.org/article/2cb55591754344b8b5e044737b4a0026
Autor:
Talwinder Singh, Bernard Benson, Syed A. Z. Raza, Tae K. Kim, Nikolai V. Pogorelov, William P. Smith, Charles N. Arge
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 78 (2023)
The arrival time prediction of coronal mass ejections (CMEs) is an area of active research. Many methods with varying levels of complexity have been developed to predict CME arrival. However, the mean absolute error (MAE) of predictions remains above
Externí odkaz:
https://doaj.org/article/0afe9f87e0ae4990b3c721f10d1d26f8
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 42 (2023)
The release and acceleration of the solar wind is still an outstanding question. There are several aspects related to this phenomenon that still need to be investigated, and one of these is the identification of the region within the inner corona whe
Externí odkaz:
https://doaj.org/article/ce27a48dac3f4f33b665cfab089731e6
Autor:
Graham Barnes, Marc L. DeRosa, Shaela I. Jones, Charles N. Arge, Carl J. Henney, Mark C. M. Cheung
Publikováno v:
The Astrophysical Journal, Vol 946, Iss 2, p 105 (2023)
The concept of surface-flux transport (SFT) is commonly used in evolving models of the large-scale solar surface magnetic field. These photospheric models are used to determine the large-scale structure of the overlying coronal magnetic field, as wel
Externí odkaz:
https://doaj.org/article/7c6fa3921d1647f38ced77022b74c4ce
Autor:
Evangelia Samara, Jasmina Magdalenic, Luciano Rodriguez, Stefaan Poedts, Manolis K. Georgoulis, Rui F. Pinto, Charles N. Arge, Stephan G. Heinemann, Stefan J. Hofmeister
It is widely known that the fast solar wind originates mainly from coronal holes (CHs) in the solar corona. Associations between the CH characteristics and the properties of the fast solar wind in situ have been studied throughout the years from diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::deec55a09590b48a1e9ba9d2fe8a75bf
https://doi.org/10.5194/egusphere-egu23-9486
https://doi.org/10.5194/egusphere-egu23-9486
Autor:
Stephan G. Heinemann, Dan Yang, Jens Pomoell, Charles N. Arge, Shaela I. Jones, Laurent Gizon
Synoptic magnetic field data usually serves as the boundary condition for simulations of the global magnetic field; however, it has been shown that these data suffer from an “aging effects” as the longitudinal 360° information can only be obtain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f26c2eccc7161bdb1a59d7887d662282
https://doi.org/10.5194/egusphere-egu23-8789
https://doi.org/10.5194/egusphere-egu23-8789