Jorge Sanz Forcada
LAEFF and CSIC


My work is based on three lines of research, most of it in the
X-ray wavelengths, but also on the optics. My main line of research
is the stellar coronae. I analyze spectroscopy and photometry; in
spectrospcopy I measure each of the spectral lines in a high
resolution spectrum and then calculate the thermal structure,
abundances and electron densities of the coronae, trying to compare
this with the theories; in photometry I study long term photometry
(search for coronal cycles in active stars, not yet found) and
short term photometry (coronal eclipses, flares, rotational
modulation, etc). I study also some side effects of coronal
radiation, such as formation of certain chromospheric lines, such
as He I 10830 A.  A second line of research is devoted to selected
cases of hot (massive) stars emitting in X-rays, mainly O and B
dwarfs with emission difficult to explain with the standard
theories. Among the highlights in this field is the finding of a
flare in an O9V star, very difficult to attribute to wind shocks
(the standard theory for the X-ray emission in hot stars). 
Finally, I have started a new line of research devoted to search
for effects of X-rays in planetary atmospheres. A work analyzing
the effects of X-rays in the atmosphere of the Earth at the moment
of the developing of life is beeing refereed now.