Density variations in the H-geocorona as response to geomagnetic disturbances studied by TWINS Lyman-alpha data

Jochen Zoennchen1, Uwe Nass1, Hans Joerg Fahr2 and Jerry Goldstein3,4, (1)University of Bonn, AIFA, Bonn, Germany, (2)University of Bonn, Bonn, Germany, (3)Southwest Research Institute, San Antonio, United States, (4)University of Texas at San Antonio, San Antonio, United States