Jupiter's X‐ray Emission During the 2007 Solar Minimum

Implications of the Recent Low Solar Minimum for the Solar Wind during the Maunder Minimum

The behavior of the Sun and near-Earth space during grand solar minima is not understood; however, the recent long and low minimum of the decadal-scale solar cycle gives some important clues, with implications for understanding the solar dynamo and predicting space weather conditions. The speed of the near-Earth solar wind and the strength of the interplanetary magnetic field (IMF) embedded wit...

Comparative study of foF2 measurements with IRI-2007 model predictions during extended solar minimum

The unusually deep and extended solar minimum of cycle 23/24 made it very difficult to predict the solar indices 1 or 2 years into the future. Most of the predictions were proven wrong by the actual observed indices. IRI gets its solar, magnetic, and ionospheric indices from an indices file that is updated twice a year. In recent years, due to the unusual solar minimum, predictions had to be co...

No Detectable H3 Emission from the Atmospheres of Hot Jupiters

H3 emission is the dominant cooling mechanism in Jupiter’s thermosphere and a useful probe of temperature and ion densities. The H3 ion is predicted to form in the thermospheres of close-in ‘hot Jupiters’ where its emission would be a significant factor in the thermal energy budget, affecting temperature and the rate of hydrogen escape from the exosphere. Hot Jupiters are predicted to have up t...

Solar forcing of regional climate change during the Maunder Minimum.

We examine the climate response to solar irradiance changes between the late 17th-century Maunder Minimum and the late 18th century. Global average temperature changes are small (about 0.3 degrees to 0.4 degrees C) in both a climate model and empirical reconstructions. However, regional temperature changes are quite large. In the model, these occur primarily through a forced shift toward the lo...

spectral solar irradiance lower during the recent low sunspot minimum ?