Zobrazeno 1 - 10
of 83
pro vyhledávání: '"solar‐terrestrial interactions"'
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 1, p L8 (2024)
The largest geomagnetic storm in two decades occurred in 2024 May with a minimum D _st of −412 nT. We examine its solar and interplanetary origins by combining multipoint imaging and in situ observations. The source active region, NOAA AR 13664, ex
Externí odkaz:
https://doaj.org/article/20f30c22aed9418e9f8220fd4f6251c4
Publikováno v:
The Astrophysical Journal Letters, Vol 970, Iss 2, p L31 (2024)
Telescopic sunspot observations began in 1610 and captured subsequent solar cycles. In combination with proxy reconstructions on an annual scale, these data sets indicate a gradual transition between regular solar cycles and the Maunder Minimum. The
Externí odkaz:
https://doaj.org/article/b5df1e22de9d4b12a9691213f55c6461
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 1, p L4 (2024)
On 2022 March 28 two successive coronal mass ejections (CMEs) were observed by multiple spacecraft and resulted in a magnetic cloud (MC) at 1 au. We investigate the propagation and interaction properties of the two CMEs correlated with the MC using c
Externí odkaz:
https://doaj.org/article/2686eb08643149ac8f4fdc7ed5a26d4c
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 1, p L25 (2024)
High-speed solar wind streams (HSSs) interact with the preceding ambient solar wind to form stream interaction regions (SIRs), which are a primary source of recurrent geomagnetic storms. However, HSSs may also encounter and subsequently interact with
Externí odkaz:
https://doaj.org/article/b4d2961e97f546d9a089c5c3cdf3bb0a
A Floor in the Sun's Photospheric Magnetic Field: Implications for an Independent Small-scale Dynamo
Publikováno v:
The Astrophysical Journal Letters, Vol 961, Iss 2, p L46 (2024)
Clette recently showed that F _10.7 systematically approaches a quiet Sun daily value of 67 solar flux units (sfu) at solar minima as the number of spotless days on the Sun increases. Previously, a floor of ∼2.8 nT had been proposed for the solar w
Externí odkaz:
https://doaj.org/article/12a73a12506a408b8cf9d4c323cbc626
Publikováno v:
Earth and Space Science, Vol 10, Iss 7, Pp n/a-n/a (2023)
Abstract Predictions of solar activity in the future are difficult to make due to the chaotic state of solar dynamo and the high nonlinearity of physical processes on the Sun. Therefore, the Climate Intercomparison Project Phase 6 (CMIP6) used a stat
Externí odkaz:
https://doaj.org/article/e5122ceba89a4fa09f428d4ef4853df5
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 266 (2024)
The Kelvin–Helmholtz instability (KHI) has been considered important in the energy transfer and momentum coupling between the solar wind and planetary magnetospheres. To explore this issue, we employ a two-dimensional magnetohydrodynamic simulation
Externí odkaz:
https://doaj.org/article/2018e16e27f44c57ac9a0ce2c9d59dfb
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 235 (2024)
Coronal mass ejection (CME) is a powerful solar phenomenon that can lead to severe space weather events. Forecasting whether and when the corresponding interplanetary coronal mass ejection (ICME) will reach the Earth is very important in space weathe
Externí odkaz:
https://doaj.org/article/7b38614154e8415a9bb9c5eb57631bd6
Autor:
Pradiphat Muangha, David Ruffolo, Alejandro Sáiz, Chanoknan Banglieng, Paul Evenson, Surujhdeo Seunarine, Suyeon Oh, Jongil Jung, Marc L. Duldig, John E. Humble
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 284 (2024)
A technique has recently been developed for tracking short-term spectral variations in Galactic cosmic rays (GCRs) using data from a single neutron monitor (NM), by collecting histograms of the time delay between successive neutron counts and extract
Externí odkaz:
https://doaj.org/article/87bce1d96e274793b3d5acc4f81b24f1
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 188 (2024)
Variations in X-ray and extreme ultraviolet (EUV) irradiance during solar flares lead to a noticeable increase in the electron concentration in the illuminated part of the Earth’s ionosphere. Due to the large amount of experimental data accumulated
Externí odkaz:
https://doaj.org/article/2b9c7091c97f4b17bbdc418cdeb0889c