Per Carlqvist (born July 25, 1938, in Stockholm, Sweden) is a Swedish plasma physicist with an interest in astrophysical applications.
[1] In 1963, he received the degree of civilingenjör from the Royal Institute of Technology, Stockholm; in 1970, the Tekn.
D. He is currently affiliated with the Royal Institute of Technology, Stockholm, at the School of Electrical Engineering in the department of Space & Plasma Physics.
[2] He is the author of several papers on astrophysical plasmas, from the formation of stars, double layers, the Bennett Pinch, to interstellar helical filaments.
Carlqvist noted that by using his relation, and a derivative, it is possible to describe the Bennett pinch, the Jeans criterion (for gravitational instability,[4] in one and two dimensions), force-free magnetic fields, gravitationally balanced magnetic pressures, and continuous transitions between these states.