In this paper, I address the oscillation probability of O(GeV) neutrinos of all active flavours produced inside the Sun and detected at the Earth. Flavours other than electron-type neutrinos may be produced, for example, by the annihilation of WIMPs which may be trapped inside the Sun. In the GeV energy regime, matter effects are important both for the “1–3” system and the “1–2” system, and for...

The convection layer completes the transport of energy from the nuclear furnace at the center of the sun to its radiation into space by the photosphere, but most importantly for the solar wind it sets the temporal and spatial scales for the structure of the coronal magnetic field that in turn controls the properties of the solar wind. In this tutorial review we examine the properties of the fie...

In this paper, I address the oscillation probability of O(GeV) neutrinos of all active flavors produced inside the Sun and detected at the Earth. Flavors other than electron-type neutrinos may be produced, for example, by the annihilation of WIMPs which may be trapped inside the Sun. In the GeV energy regime, matter effects are important both for the ‘‘1-3’’ system and the ‘‘1-2’’ system, and f...

We describe a simple analytic model for the magnetic field in the solar corona and interplanetary space which is appropriate to solar minimum conditions. The model combines an azimuthal current sheet in the equatorial plane with an axisymmetric multipole field representing the internal magnetic field of the Sun. The radial component of the field filling interplanetary space is approximately mon...

We report on new simulations of the transport of energetic protons originating from the decay of energetic neutrons produced in solar flares. Because the neutrons are fast-moving but insensitive to the solar wind magnetic field, the decay protons are produced over a wide region of space, and they should be detectable by current instruments over a broad range of longitudes for many hours after a...

The micro-Digital Sun Sensor (μDSS) is a sun detector which senses a satellite’s instant attitude by detecting its attitude angle with respect to the sun. It is composed of a solar cell power supply, a RF communication block and an imaging chip, which is called APS+. The APS+ integrates a CMOS Active Pixel Sensor (APS) of 368×368 pixels, a 12 bit Analogue to Digital Converter (ADC), and digital...

It is of great importance to monitor large solar active regions in the far-side of the Sun for space weather forecast, in particular, to predict their appearance before they rotate into our view from the solar east limb. Local helioseismology techniques, including helioseismic holography and time-distance, have successfully imaged solar far-side active regions. In this Letter, we further explor...

We present new photometry and spectroscopy of 34 stars from a catalog of 38 nearby (d < 25 pc) G and K dwarfs selected as analogs to the early Sun. We report that the least active star in our sample is also slowly rotating and probably of solar age. Two other stars appear to be evolved objects that have recently acquired angular momentum. A fourth star may be a spectroscopic binary. Many of the...

Annotations are often added to mobile code to reduce the optimization burden of just-intime compilers. However, these annotations are not checked for correctness and must be trusted—incorrect or malicious annotations could lead to the generation of incorrect or insecure code. We present a timeand space efficient method for verifying the results of the large class of data flow optimizations. Thi...