SDO/HMI survey of emerging active regions for helioseismology

Data Compression for Helioseismology

Emerging drugs for active tuberculosis.

Tuberculosis (TB) drug research and development lay largely fallow from the 1960s to the turn of the century. A realization that current treatments for this major public health epidemic are proving inadequate to control the disease and prevent development and spread of drug resistance has stimulated renewed activity during the past 5 to 10 years. As a result, there are now seven drugs in clinic...

Geodesic Active Regions for Tracking

In this paper we propose some new ideas for tracking multiple moving objects by the propagation of curves. We assume a static observer, as well as the existence of a background reference frame. The tracking is performed using an improved Geodesic Active Contour model that incorporates boundary-based and region-based motion information. This model is called a Geodesic Active Region model. Initia...

Gravitational helioseismology?

The magnitudes of the external gravitational perturbations associated with the normal modes of the Sun are evaluated to determine whether these solar oscillations could be observed with the proposed Laser Interferometer Space Antenna (LISA), a network of satellites designed to detect gravitational radiation. The modes of relevance to LISA—the l = 2, low-order p, f and g-modes—have not been conc...

Neutrino Helioseismology

The observed deficit of B solar neutrinos may call for an improved standard model of the sun or an expanded standard model of particle physics (e.g., with neutrino masses and mixing). In the former case, contemporary fluid motions and thermal fluctuations in the sun’s core may modify nuclear reaction rates and restore agreement. To test this notion, we propose a search for short–term variations...