MIT Kavli Institute Directory

Herman L. Marshall

Principal Research Scientist

As an undergraduate at MIT, I worked on data from the SAS-3 X-ray satellite and was an operator. After my Ph.D. work (on quasar evolution), I was a Fellow at the Space Telescope Science Institute for two years. I then worked on the Extreme Ultraviolet Explorer Project for 8 years, in charge of the scientific data analysis system. Since 1993, I have been the instrument calibration scientist for the Chandra High Energy Transmission Grating Spectrometer, also involved in cross-calibration with other X-ray satellites.

Research interests: 

I am currently working on high resolution X-ray and optical images of quasar jets, high resolution X-ray spectroscopy of active galactic nuclei and neutron star atmospheres, and X-ray spectroscopy of the X-ray binary SS 433. I am also developing a laboratory for testing techniques and prototype instrumentation that can be used to measure linear X-ray polarization in the soft X-ray band.

Representative publications: 

1) “A Chandra Survey of Quasar Jets: Continuation”, Marshall, H.L., et al. 2011, Ap.J. Suppl., 193, 15. 2) “Broadband Soft X-ray Polarimetry”, Marshall, H.L., et al., 2010, Proceedings SPIE, 7732, 77320F.

Contact Information

t: 617-253-8573



S.B., MIT, 1978; A.M., Harvard University, 1980; Ph.D., Harvard University, 1983