The Line Emission Mapper (LEM) Probe Mission Concept

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00139244" target="_blank" >RIV/00216224:14310/24:00139244 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1117/12.3019969" target="_blank" >https://doi.org/10.1117/12.3019969</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.3019969" target="_blank" >10.1117/12.3019969</a>

Result language

angličtina

Original language name

The Line Emission Mapper (LEM) Probe Mission Concept

Original language description

The Line Emission Mapper (LEM) is a Probe mission concept developed in response to NASA's Astrophysics Probe Explorer (APEX) Announcement of Opportunity. LEM has a single science instrument composed of a large-area, wide-field X-ray optic and a microcalorimeter X-ray imaging spectrometer in the focal plane. LEM is optimized to observe low-surface-brightness diffuse X-ray emission over a 30' equivalent diameter field of view with 1.3 and 2.5 eV spectral resolution in the 0.2- 2.0 keV band. Our primary scientific objective is to map the thermal, kinetic, and elemental properties of the diffuse gas in the extended X-ray halos of galaxies, the outskirts of galaxy clusters, the filamentary structures between these clusters, the Milky Way star-formation regions, the Galactic halo, and supernova remnants in the Milky Way and Local Group. The combination of a wide-field optic with 18'' angular resolution end-to-end and a microcalorimeter array with 1.3 eV spectral resolution in a 5' x 5' inner array (2.5 eV outside of that) offers unprecedented sensitivity to extended low-surface-brightness X-ray emission. This allows us to study feedback processes, gas dynamics, and metal enrichment over seven orders of magnitude in spatial scales, from parsecs to tens of megaparsecs. LEM will spend approximately 11% of its five-year prime science mission performing an All-Sky Survey, the first all-sky X-ray survey at high spectral resolution. The remainder of the five-year science mission will be divided between directed science (30%) and competed General Observer science (70%). LEM and the NewAthena/XIFU are highly complementary, with LEM's optimization for soft X-rays, large FOV, 1.3 eV spectral resolution, and large grasp balancing the NewAthena/X-IFU's broadband sensitivity, large effective area, and unprecedented spectral resolving power at 6 keV. In this presentation, we will provide an overview of the mission architecture, the directed science driving the mission design, and the broad scope these capabilities offer to the entire astrophysics community.

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

SPACE TELESCOPES AND INSTRUMENTATION 2024: ULTRAVIOLET TO GAMMA RAY, PT 1

ISBN

9781510675094

ISSN

0277-786X

e-ISSN

1996-756X

Number of pages

54

Pages from-to

1309327

Publisher name

SPIE-INT SOC OPTICAL ENGINEERING

Place of publication

BELLINGHAM

Event location

Yokohama, JAPAN

Event date

Jun 16, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

001338129600058