Paper 13093-291
Paper 13093-291
Implementing the LEM science program with a high spectral resolution wide field of view x-ray telescope
On demand | Presenting live 19 June 2024 
Abstract
The Line Emission Mapper (LEM) is a proposed NASA probe-class mission designed to understand the formation of structure in the Universe. LEM is a single instrument X-ray telescope consisting of an X-ray optic with a 4m focal length coupled to an X-ray microcalorimeter with a 30' field of view. The 10" half power diameter of the mirror is well matched to the 15" pixels of the LEM microcalorimeter spectrometer (LMS). The LMS consists of a 14K pixel array with a 5' central array of pixels with 1.3 eV FWHM energy resolution, surrounded by an array of "hydras" where 4 pixels are attached to a single transition edge sensor, providing 2.5 eV FWHM energy resolution. In this presentation, I will discuss how the LEM design is optimized to address key questions laid out by the 2020 Decadal Survey related to structure formation and feedback in the Universe.
Presenter
Ctr. for Astrophysics | Harvard & Smithsonian (United States)
Dr. Dan Patnaude is an astrophysicist at the Smithsonian Astrophysical Observatory. He is the Operations Scientist for the Chandra X-ray Observatory's High Resolution Camera. Dr. Patnaude has been involved with Chandra since 1995, working on ground calibration, mission operations, and instrument operations. Dr. Patnaude is also the Deputy Observatory Scientist for LEM. Dr. Patnaude studies supernovae, supernova remnants, nuclear astrophysics, and astrophysical fluids. He received his Ph.D in Physics and Astronomy from Dartmouth College in 2005, and his B.S. in Astronomy from the University of Massachusetts at Amherst in 1995. Dr. Patnaude is an avid mountain bike racer,
ultra-marathoner, and marathon swimmer.
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