Bright Chromospheric Grains and the Magnetic Intranetwork

Abstract

We compare bright grains in the cell interiors of the chromospheric network with intranetwork magnetic field elements using images from the Transition Region and Coronal Explorer Satellite (TRACE) taken at H I Ly alpha (121.6 nm) (chromosphere) and the continuum at 160 nm (temperature minimum). We find only a random correspondence between bright cell grains and regions of intranetwork magnetic flux as seen in these two emissions. In addition, we find that the 160.0 nm cell grains that do overlay magnetic intranetwork show no correlation between intensity and magnetic field strength. However, it is possible that Ly alpha bright cell grains that overlay magnetic fields may show a slight enhancement in intensity. Our results suggest that the intranetwork magnetic field is essentially uninvolved with the production of cell grains in the upper photosphere/lower chromosphere but could have a small involvement with bright cell grains in the chromosphere/transition region.