Prediction of sunspot number amplitude and solar cycle length for cycles 24 and 25

Rigozo, Nivaor Rodolfo; Echer, M.P. Souza; Evangelista, Heitor; Nordemann, D. J. R.; Echer, E.

doi:10.1016/j.jastp.2010.09.005

Cited by 52 publications

(25 citation statements)

References 46 publications

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“…The results are 196 ± 52 for 13-month smoothed monthly data and 130 ± 42 for monthly sunspot number. In general, these values are higher compared to the published prediction of other authors [10,11,12,13]. …”

Section: Relation Between and Hcontrasting

confidence: 66%

White light corona during total solar eclipse on March 9, 2016

Imaduddin

Akbar

Putri

2016

J. Phys.: Conf. Ser.

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Abstract.We observed the white-light corona during the total solar eclipse of 2016 March 9 from Corong Beach, East Borneo. The solar corona is nearly circular with exception on the southern part of the Sun. Coronal structures are clearly seen. Based on the data, we obtained the Ludendorff flattening index, Nikolsky geometric flattening index, and phases of solar activity (Φ and P) are 0.129, 1.32, -0.716, and 0.573 respectively. Relation between Ludendorff and Nikolsky index, sunspot number, and phases of solar activity were discussed. We also predicted the amplitude of solar cycle 25 to be 196 ± 52 (based on 13-month smoothed monthly data) and 130 ± 42 (based on monthly sunspot number data).

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Section: Relation Between and Hcontrasting

confidence: 66%

White light corona during total solar eclipse on March 9, 2016

Imaduddin

Akbar

Putri

2016

J. Phys.: Conf. Ser.

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“…For the upcoming maximum, expected in 2013, the solar activity is predicted to be relatively low. The solar maximum thereafter is also expected to exhibit relatively low activity [Rigozo et al 2011]. Thus, the ion flux data from the Phobos 2 mission and 1989 maximum are unique in a sense that there will likely not be another opportunity to measure ion fluxes at Mars during extreme solar activity for decades.…”

Section: Introductionmentioning

confidence: 99%

Phobos 2/ASPERA data revisited: Planetary ion escape rate from Mars near the 1989 solar maximum

Ramstad

Futaana

Barabash

et al. 2013

Geophysical Research Letters

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Insights about the near‐Mars space environment from Mars Express observations have motivated a revisit of the Phobos 2/ASPERA ion data from 1989. We have expanded the analysis to now include all usable heavy ion (O+, O2+, CO2+) measurements from the circular orbits of Phobos 2. Phobos 2/ASPERA ion fluxes in the Martian tail are compared with previous results obtained by the instruments on Phobos 2. Further validation of the measurement results is obtained by comparing IMP‐8 and Phobos 2/ASPERA solar wind ion fluxes, taking into account the time lag between Earth and Mars. Heavy ion flux measurements from 18 circular equatorial orbits around Mars are bin‐averaged to a grid, using the MSE (electric field) frame of reference. The binned data are subsequently integrated to determine the total escape rate of planetary ions. From this we derive a total planetary heavy ion escape rate of (2–3) × 1025 s−1 from Mars for the 1989 solar maximum.

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“…El ciclo solar 24 está próximo a finalizar (Figura 7). Rigozo et al (2011) estimaron la duración del ciclo en 11,1 años basándose en la extrapolación de las componentes espectrales de los índices de manchas solares, el ciclo finalizaría en ese caso en diciembre de 2019. Se podría además tomar en cuenta los resultados de Richards M.T.…”

Section: Resultados Y Discusiónunclassified

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2019

Rep. cient. FACEN

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En este trabajo se estudia la actividad solar mediante el seguimiento de manchas solares. Los registros de observación fueron realizados en el Observatorio Prof. Alexis Troche para el periodo 2007-2010. Uno de los objetivos del presente trabajo fue determinar el factor de escala. Nuestros resultados sugieren que el mínimo de actividad solar se dio en noviembre del 2008. Este mínimo nos permitió estimar el máximo para el ciclo 24. Aplicando el método combinado se pudo predecir la evolución completa del presente ciclo solar.

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Prediction of sunspot number amplitude and solar cycle length for cycles 24 and 25

Cited by 52 publications

References 46 publications

White light corona during total solar eclipse on March 9, 2016

White light corona during total solar eclipse on March 9, 2016

Phobos 2/ASPERA data revisited: Planetary ion escape rate from Mars near the 1989 solar maximum

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