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pro vyhledávání: '"Leamon, A."'
Autor:
McIntosh, Scott W., Leamon, Robert J.
The Sun exhibits episodic surges of magnetic activity across a range of temporal and spatial scales, the most prominent of which is the 11-ish year modulation of sunspot production. Beside the ~170 (min to max) decadal variation in sunspot production
Externí odkaz:
http://arxiv.org/abs/2408.10354
Autor:
Scott W. McIntosh, Robert J. Leamon
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
The Sun exhibits episodic surges of magnetic activity across a range of temporal and spatial scales, the most prominent of which is the 11-th year modulation of sunspot production. Beside the ∼170 (min to max) decadal variation in sunspot productio
Externí odkaz:
https://doaj.org/article/2b00ee5240304e5da3327bdc27392b11
We previously identified an event in the solar timeline that appeared to play a role in how Sunspot Cycle 23 (SC23) transitioned into Sunspot Cycle 24 (SC24). The timeframe for this transition was rapid, taking place over a very short time and perhap
Externí odkaz:
http://arxiv.org/abs/2209.10577
Through meticulous daily observation of the Sun's large-scale magnetic field the Wilcox Solar Observatory (WSO) has catalogued two magnetic (Hale) cycles of solar activity. Those two (~22-year long) Hale cycles have yielded four ($\sim$11-year long)
Externí odkaz:
http://arxiv.org/abs/2208.09026
We construct a new solar cycle phase clock which maps each of the last 18 solar cycles onto a single normalized epoch for the approximately 22 year Hale (magnetic polarity) cycle, using the Hilbert transform of daily sunspot numbers (SSN) since 1818.
Externí odkaz:
http://arxiv.org/abs/2101.02569
The Sun's variability is controlled by the progression and interaction of the magnetized systems that form the 22-year magnetic activity cycle (the "Hale Cycle'') as they march from their origin at $\sim$55 degrees latitude to the equator, over $\sim
Externí odkaz:
http://arxiv.org/abs/2012.15186
Autor:
McIntosh, Scott W., Leamon, Robert J., Egeland, Ricky, Dikpati, Mausumi, Altrock, Richard C., Banerjee, Dipankar, Chatterjee, Subhamoy, Srivastava, Abhishek K., Velli, Marco
We investigate the occurrence of the "extended solar cycle" (ESC) as it occurs in a host observational data spanning 140 years. Investigating coronal, chromospheric, photospheric and interior diagnostics we develop a consistent picture of solar activ
Externí odkaz:
http://arxiv.org/abs/2010.06048
Autor:
McIntosh, Scott W., Chapman, Sandra C., Leamon, Robert J., Egeland, Ricky, Watkins, Nicholas W.
The Sun exhibits a well-observed modulation in the number of spots on its disk over a period of about 11 years. From the dawn of modern observational astronomy sunspots have presented a challenge to understanding -- their quasi-periodic variation in
Externí odkaz:
http://arxiv.org/abs/2006.15263
We study the solar wind helium-to-hydrogen abundance's ($A_\mathrm{He}$) relationship to solar cycle onset. Using OMNI/Lo data, we show that $A_\mathrm{He}$ increases prior to sunspot number (SSN) minima. We also identify a rapid depletion and recove
Externí odkaz:
http://arxiv.org/abs/2006.04669
Autor:
Lukewich, Julia, Mathews, Maria, Poitras, Marie-Eve, Tranmer, Joan, Martin-Misener, Ruth, Bryant-Lukosius, Denise, Aubrey-Bassler, Kris, Klassen, Treena, Curnew, Deanne, Bulman, Donna, Leamon, Toni, Ryan, Dana
Publikováno v:
In Nurse Education in Practice August 2023 71