Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Yeo, K. L."'
We compared magnetograms from the KPVT/SPM, SoHO/MDI, SOLIS/VSM, and SDO/HMI with the aim of probing the effect on measured solar magnetism of the variation in instrument response with time, magnetogram signal level, and position on the solar disc. T
Externí odkaz:
http://arxiv.org/abs/2405.13895
Autor:
Yeo, K. L., Krivova, N. A., Solanki, S. K., Hirzberger, J., Suárez, D. Orozco, Albert, K., Jorge, N. Albelo, Appourchaux, T., Alvarez-Herrero, A., Rodríguez, J. Blanco, Gandorfer, A., Gutierrez-Marques, P., Kahil, F., Kolleck, M., Iniesta, J. C. del Toro, Volkmer, R., Woch, J., Fiethe, B., Pérez-Grande, I., Kilders, E. Sanchis, Jiménez, M. Balaguer, Rubio, L. R. Bellot, Calchetti, D., Carmona, M., Feller, A., Fernandez-Rico, G., Fernández-Medina, A., Parejo, P. García, Blesa, J. L. Gasent, Gizon, L., Grauf, B., Heerlein, K., Korpi-Lagg, A., Maue, T., Meller, R., Vacas, A. Moreno, Müller, R., Nakai, E., Schmidt, W., Schou, J., Sinjan, J., Staub, J., Strecker, H., Torralbo, I., Valori, G.
Publikováno v:
A&A 679, A25 (2023)
Solar irradiance variability has been monitored almost exclusively from the Earth's perspective. {We present a method to combine the unprecedented observations of the photospheric magnetic field and continuum intensity from outside the Sun-Earth line
Externí odkaz:
http://arxiv.org/abs/2309.16355
Publikováno v:
A&A (2021)
The relationship between bipolar magnetic regions (BMRs) and their sunspots is an important property of the solar magnetic field, but it is not well constrained. One consequence is that it is a challenge for surface flux transport models (SFTMs) base
Externí odkaz:
http://arxiv.org/abs/2109.14313
Autor:
Sowmya, K., Shapiro, A. I., Witzke, V., Nèmec, N. -E., Chatzistergos, T., Yeo, K. L., Krivova, N. A., Solanki, S. K.
The emission in the near ultraviolet Ca II H & K lines is modulated by stellar magnetic activity. Although this emission, quantified via the S-index, has been serving as a prime proxy of stellar magnetic activity for several decades, many aspects of
Externí odkaz:
http://arxiv.org/abs/2103.13893
Autor:
Yeo, K. L., Krivova, N. A.
Publikováno v:
A&A 624 A135 (2019)
We aim to gain insight into the effect of network and faculae on solar irradiance from their apparent intensity. Taking full-disc observations from the Solar Dynamics Observatory, we examined the intensity contrast of network and faculae in the conti
Externí odkaz:
http://arxiv.org/abs/2102.09530
Autor:
Yeo, K. L., Solanki, S. K., Krivova, N. A., Rempel, M., Anusha, L. S., Shapiro, A. I., Tagirov, R. V., Witzke, V.
Publikováno v:
Geophysical Research Letters, 47, e2020GL090243 (2020)
How the solar electromagnetic energy entering the Earth's atmosphere varied since pre-industrial times is an important consideration in the climate change debate. Detrimental to this debate, estimates of the change in total solar irradiance (TSI) sin
Externí odkaz:
http://arxiv.org/abs/2102.09487
How global faculae and network coverage relates to that of sunspots is relevant to the brightness variations of the Sun and Sun-like stars. We extend earlier studies that found the facular-to-sunspot-area ratio diminishes with total sunspot coverage.
Externí odkaz:
http://arxiv.org/abs/2006.14274
Publikováno v:
A&A 631, A178 (2019)
Context. Solar spectral irradiance (SSI) variability is one of the key inputs to models of the Earth's climate. Understanding solar irradiance fluctuations also helps to place the Sun among other stars in terms of their brightness variability pattern
Externí odkaz:
http://arxiv.org/abs/1909.11736
The solar brightness varies on timescales from minutes to decades. Determining the sources of such variations, often referred to as solar noise, is of importance for multiple reasons: a) it is the background that limits the detection of solar oscilla
Externí odkaz:
http://arxiv.org/abs/1711.04156
Publikováno v:
Phys. Rev. Lett. 119, 091102, 2017
The variation in the radiative output of the Sun, described in terms of solar irradiance, is important to climatology. A common assumption is that solar irradiance variability is driven by its surface magnetism. Verifying this assumption has, however
Externí odkaz:
http://arxiv.org/abs/1709.00920