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相关论文: Revised historical solar irradiance forcing

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Solar activity is controlled by the magnetic field, which also causes the variability of the solar irradiance that in turn is thought to influence the climate on Earth. The magnetic field manifests itself in the form of structures of…

太阳与恒星天体物理 · 物理学 2013-07-10 T. L. Riethmüller

We present a focused parameter study of solar wind - magnetosphere interaction for the young Sun and Earth, $~3.5$ Ga ago, that relies on magnetohydrodynamic (MHD) simulations for both the solar wind and the magnetosphere. By simulating the…

太阳与恒星天体物理 · 物理学 2011-02-02 M. Glenn Sterenborg , Ofer Cohen , Jeremy J. Drake , Tamas I. Gombosi

High-precision pulsar timing requires accurate corrections for dispersive delays of radio waves, parametrized by the dispersion measure (DM), particularly if these delays are variable in time. In a previous paper we studied the Solar-wind…

The aim of this work is to provide new insights on the dynamics associated to the resonances which arise as a consequence of the coupling of the effect due to the oblateness of the Earth and the Solar Radiation Pressure (SRP) effect for an…

地球与行星天体物理 · 物理学 2022-12-14 Roberto Paoli

We study the effects of different descriptions of the solar surface convection on the eigenfrequencies of p-modes. 1-D evolution calculations of the whole Sun and 3-D hydrodynamic and magnetohydrodynamic simulations of the current surface…

太阳与恒星天体物理 · 物理学 2015-06-17 Laurent Piau , Remo Collet , Robert F. Stein , Regner Trampedach , Pierre Morel , Sylvaine Turck-Chieze

The last solar minimum has been unusually quiet compared to the previous minima (since space-based radiometric measurements are available). The Sun's magnetic flux was substantially lower during this minimum. Some studies also show that the…

太阳与恒星天体物理 · 物理学 2015-09-02 F. Shakeri , L. Teriaca , S. K. Solanki

The correlation between solar irradiance and the 11-year solar activity cycle is evident in the body of measurements made from space, which extend over the past four decades. Models relating variation in solar irradiance to photospheric…

太阳与恒星天体物理 · 物理学 2015-07-07 K. L. Yeo , N. A. Krivova , S. K. Solanki

We discuss constraints on the coefficient A_{MSW} which is introduced to simulate the effect of weaker or stronger matter potential for electron neutrinos with the current and future solar neutrino data. The currently available solar…

高能物理 - 唯象学 · 物理学 2012-10-03 Hisakazu Minakata , Carlos Pena-Garay

Recent coordinated power-spectrum analyses of radiochemical solar neutrino data and the solar irradiance have revealed a highly significant, high-Q common modulation at 11.85 yr-1. Since the stability of this frequency points to an…

天体物理学 · 物理学 2009-11-13 P. A. Sturrock

Solar irradiance is the primary input for all solar energy generation systems. The amount of available solar radiation over time under the local weather conditions helps to decide the optimal location, technology and size of a solar energy…

大气与海洋物理 · 物理学 2019-12-17 T. A. Fathima , Vasudevan Nedumpozhimana , Yee Hui Lee , Stefan Winkler , Soumyabrata Dev

The analysis of the observations of solar activity indexes SSN (NOAA Sunspot Numbers), the radio flux at a wavelength of 10.7 cm (F10.7) and the solar constant (TSI) during the cycles 22 - 24 is presented. We found a decrease of the…

太阳与恒星天体物理 · 物理学 2015-10-08 E. A. Bruevich , G. V. Yakunina

Maunder Minimum forms an archetype for the Grand minima, and detailed knowledge of its temporal development has important consequences for the solar dynamo theory dealing with long-term solar activity evolution. Here we reconsider the…

太阳与恒星天体物理 · 物理学 2015-05-27 J. M. Vaquero , M. C. Gallego , I. G. Usoskin , G. A. Kovaltsov

Advances in hydrodynamical simulations have provided new insights into the effects of convection on the frequencies of solar oscillations. As more accurate observations become available, this may lead to an improved understanding of the…

In the present paper, we use Si IV 1393.755 \AA\ spectral line observed by the Interface Region Imaging Spectrograph (IRIS) in the quiet-Sun to determine physical nature of the solar transition region (TR) oscillations. We analyze the…

太阳与恒星天体物理 · 物理学 2022-10-12 Kartika Sangal , A. K. Srivastava , P. Kayshap , T. J Wang , J. J. González-Avilés , Abhinav Prasad

Solar activity in the past millennia can only be reconstructed from cosmogenic radionuclide records in terrestrial archives. However, because of the diversity of the proxy archives, it is difficult to build a homogeneous reconstruction.…

太阳与恒星天体物理 · 物理学 2018-07-25 Chi Ju Wu , I. G. Usoskin , N. Krivova , G. A. Kovaltsov , M. Baroni , E. Bard , S. K. Solanki

Solar activity is studied using a cluster analysis of the time-fluctuations of sunspot number. In the historic period (1850-1932) the cluster exponent was approximately equal to 0.37 (strong clustering) for the high activity components of…

太阳与恒星天体物理 · 物理学 2009-08-03 A. Bershadskii

Severity of warming predicted by climate models depends on their Transient Climate Response (TCR). Inter-model spread of TCR has persisted at ~100% of its mean for decades. Existing observational constraints of TCR are based on observed…

大气与海洋物理 · 物理学 2023-12-25 King-Fai Li , Ka-Kit Tung

The analysis of long-term variations of several solar activity indices (AI) since in last 40 years has been performed. We studied the AI which characterize the fluxes from different areas in solar atmosphere. Our consideration of mutual…

太阳与恒星天体物理 · 物理学 2019-01-01 E. A. Bruevich , V. V. Bruevich

We present updated standard solar models (SSMs) that incorporate the latest results for nuclear fusion rates, recently published. We show helioseismic results for high and low metallicity compositions and also for an alternative set of…

太阳与恒星天体物理 · 物理学 2011-09-14 Aldo Serenelli

We attempt to establish links between a summary curve, or modulus summary curve, MSC, of the solar background magnetic field (SBMF) derived from Principal Component Analysis, with the averaged sunspot numbers (SSN). The comparison of MSC…

太阳与恒星天体物理 · 物理学 2023-04-12 V. V. Zharkova , I. Vasilieva , S. J. Shepherd , E. Popova