Search Publications

Search for Microflaring Activity in the Magnetic Network

Falchi, A.; Cauzzi, G.; Falciani, R.

We analyze the temporal behavior of network bright points (NBPs) searching for low-atmosphere signatures of flares occurring on the magnetic network. We make use of a set of data acquired during coordinated observations between ground-based observatories (NSO/Sacramento Peak) and the MDI instrument on board SOHO. Light curves in chromospheric spec…

Characteristics of a type II solar radio burst on 22 March 1998

Shanmugaraju, A.; Umapathy, S.; Balasubramanian, V.

A solar radio type II burst (which was seen as two patches of emission, one during 07:00-07:13 UT and other one during 07:20-07:35 UT) was observed on 22 March 1998 using the Madurai radio spectrograph. A broad range of data (from Culgoora and Hiraiso spectrographs, white-light data from SOHO/LASCO and X-ray data from Yohkoh and GOES satellites) w…

Inhomogeneity in the solar core

Gough, D. O.

In recent years, normal-mode helioseismology has shown that the spherically averaged sound-speed distribution throughout the solar interior is in remarkable agreement with suitable standard solar models. This implies that any deviation of the theoretical models from the Sun has only a very small influence on the oscillation frequency spectrum (exc…

Measurements of Rotational Frequency Splitting of Low Angular Degree Modes

Toutain, Thierry

The rotational splitting of low-degree p modes is still a controversial issue. There are small but nevertheless real discrepancies between the different measurements of splittings obtained with the existing helioseismology experiments from ground (BISON, IRIS, GONG, LOWL) or from space (VIRGO, GOLF, MDI). I review the current status of rotational …