The Line Emission Mapper (LEM) Probe team will hold a science and technology workshop between February 28 – March 3 at the Center for Astrophysics in Cambridge, Massachusetts. The workshop will present the current broad science case and the state of the underlying detector and mirror technology, in preparation for the 2023 NASA Astrophysics Probes call.

LEM's primary goal is a comprehensive look at the physics of galaxy formation, including the stellar and black-hole feedback and flows of baryonic matter into and out of galaxies, which are best studied in X-rays. LEM will use a large microcalorimeter array/IFU, covering a 30' field with 15" resolution, to map the soft X-ray line emission from objects that constitute a galactic ecosystem — SNRs, star-forming regions, superbubbles, Fermi/eROSITA bubbles in the Milky Way and their analogs in other galaxies, Circumgalactic Medium, and the Intergalactic Medium beyond the confines of galaxies and clusters. Its 1–2 eV spectral resolution and the 0.2–2 keV band will make it possible to disentangle the faint signal from the Milky Way foreground, measure gas velocities and diagnose various emission mechanisms and plasma conditions. LEM will observe all classes of astrophysical objects. The team is considering a shallow all-sky survey and observations of Earth's magnetosphere.

Workshop Poster

Invited Speakers

  • Eugene Churazov (MPA)
  • Edmund Hodges-Kluck (NASA Goddard)
  • Sean Johnson (University of Michigan)
  • Elena Rasia (INAF- Observatory of Trieste)
  • Anna Rosen (UC San Diego)
  • Joop Schaye (Leiden University)

Science Organizing Committee

  • Akos Bogdan (CfA) (co-chair)
  • Anna Ogorzalek (NASA GSFC) (co-chair)
  • Joe Burchett (New Mexico State University)
  • Renata Cumbee (NASA GSFC)
  • Will Dunn (University College London)
  • Maurice Leutenegger (NASA GSFC)
  • Maxim Markevitch (NASA GSFC)
  • Aurora Simionescu (SRON)
  • Kim Weaver (NASA GSFC)
  • Irina Zhuravleva (University of Chicago)

Local Organizing Committee

  • Thomas Connor (chair)
  • Tara Gokas

Important Dates

  • November 14, 2022: Conference registration opens
  • December 15, 2022: Abstract submission deadline
  • January 13, 2023: Deadline to register

Abstract Submission

Please use the Abstract Submission Form to indicate an interest in presenting at the workshop. Note that participation is not guaranteed.


Registration is now closed. The registration fee is $250, which will include coffee breaks and lunches.