Results 91 to 100 of about 1,057 (192)

Bistability in the sunspot cycle

Europhysics Letters
Abstract A direct dynamical test of the sunspot cycle is carried out to indicate that a stochastically forced nonlinear oscillator characterizes its dynamics. The sunspot series is then decomposed into its eigen time-delay coordinates.
Vashishtha, Sumit, Sreenivasan, Katepalli   +1 more
openaire   +3 more sources

Prediction of the strength and timing of sunspot cycle 25 reveal decadal-scale space environmental conditions. [PDF]

Nat Commun, 2018
Bhowmik P, Nandy D.
europepmc   +1 more source

A New Declining Phase Precursor and an Early Prediction of Cycle 26 Maximum

The Astrophysical Journal
The overall level of solar activity as seen in the sunspot number (SSN) record paces both the state of the ionosphere and the amplitude and occurrence rates of extreme space weather events.
S. C. Chapman
doaj   +1 more source

The sunspot cycle no. 24 in relation to long term solar activity variation. [PDF]

J Adv Res, 2013
Komitov B, Kaftan V.
europepmc   +1 more source

SUNSPOTS CYCLE AND JETS

, 2019
MAJOR ADVISOR: DR. ANNO KARE (PHD) ABSTRACT The fundamental physics as introduced by the Magnetic interaction hypothesis has led to an entirely new hypothesis for solar activity and energy transformation.This important aspect has laid the bases upon which solar activities and External Magnetic Field could better be understood.
openaire   +2 more sources

Long-memory modeling and forecasting of monthly mean sunspot numbers for cycles 25 & 26 using ARFIMA model. [PDF]

Sci Rep
Abdel Rahman HI, Eid D.
europepmc   +1 more source

SSTrack: An Automatic Sunspot Identification and Tracking Algorithm to Support the Measurement of Sunspot Rotation. [PDF]

Sol Phys
Proverbs C, Brown D.
europepmc   +1 more source

Does the 11-year solar cycle affect lake and river ice phenology? [PDF]

PLoS One, 2023
Schmidt DF, Grise KM, Pace ML.
europepmc   +1 more source

Evolution of Open Magnetic Flux and Heliospheric Current Sheet-Associated Streamer Wind Across Multiple Solar Cycles. [PDF]

Sol Phys
MacTaggart JR, Zhao L, Lepri ST, Fisk LA, Nakhleh AJ.   +4 more
europepmc   +1 more source

Extremely active Sun from 1190 to 1220 in the Medieval Period: Intercomparison of historical records and tree-ring carbon-14. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci
Miyahara H, Kataoka R, Yamamoto K, Tokanai F, Moriya T, Takeyama M, Sakurai H, Ohyama M, Horiuchi K, Hotta H.   +9 more
europepmc   +1 more source