The Line Emission Mapper (LEM) Probe Mission Concept

R. Kraft; Bogdán; J. ZuHone; J. S. Adams; J. D. Alvarado-Gómez; C. Argiroffi; M. Ayromlou; M. Azadi; S. R. Bandler; M. Barbera; A. Bhardwaj; V. Biffi; D. Bodewits; E. Boettcher; B. Branham; J. N. Burchett; D. J. Burke; J. Cann; J. A. Carter; D. Castro; P. Chakraborty; K. W. Chan; S. Chen; E. Churazov; K. Coderre; M. F. Corcoran; R. S. Cumbee; S. V. DePalo; K. Dolag; M. Donahue; W. B. Doriese; J. J. Drake; W. Dunn; M. E. Eckart; D. Eckert; S. Ettori; Y. Ezoe; C. H. Feldman; E. Flaccomio; W. R. Forman; M. Galeazzi; A. C. Gall; C. Garraffo; M. Gonzalez; N. Grosso; J. Hartley; N. Hell; L. Hernquist; E. Hodges-Kluck; J. Houston; S. V. Hull; N. Islam; P. M. Janas; F. J. Jennings; C. Jones; P. Kaaret; H. Kanner; M. Karovska; V. Kashyap; P. J. Kavanagh; R. L. Kelley; I. Khabibullin; C. A. Kilbourne; C. G. Kim; D. Koutroumpa; O. E. Kovács; K. D. Kuntz; S. H. Lee; M. A. Leutenegger; T. Linn; S. Lotti; M. Markevitch; K. Martin; L. May; D. McCammon; S. C. McEntee; S. Mei; F. Mernier; M. Miceli; J. B. Miller; M. S. Mirakhor; K. Monsch; Y. Nazé; D. Nelson; A. A. Nordt; A. Ogorzalek; J. Olson; S. Orlando; E. Osborne; L. M. Oskinova; D. Patnaude; R. W. Pfeifle; C. Pinto; P. Plucinsky; G. Ponti; D. Porquet; F. S. Porter; D. Préle; S. Ramm; S. W. Randall; E. Rasia; M. M. Rau; S. Richardson; K. S. Sakai; A. Sarkar; G. Schellenberger; S. Sciortino; J. Schaye; A. Simionescu; S. J. Smith; M. Sobolewska; J. F. Steiner; J. Stern; Y. Su; M. Sun; N. Truong; E. Ursino; M. Valentini; S. Veilleux; S. Vladutescu-Zopp; M. Vogelsberger; N. A. Wakeham; S. A. Walker; Q. D. Wang; B. Wargelin; K. A. Weaver; J. K. Werk; N. Werner; S. J. Wolk; C. Zhang; W. W. Zhang; I. Zhuravleva

doi:10.1117/12.3019969

The Line Emission Mapper (LEM) Probe Mission Concept

R. Kraft^*, Bogdán, J. ZuHone, J. S. Adams, J. D. Alvarado-Gómez, C. Argiroffi, M. Ayromlou, M. Azadi, S. R. Bandler, M. Barbera, A. Bhardwaj, V. Biffi, D. Bodewits, E. Boettcher, B. Branham, J. N. Burchett, D. J. Burke, J. Cann, J. A. Carter, D. CastroP. Chakraborty, K. W. Chan, S. Chen, E. Churazov, K. Coderre, M. F. Corcoran, R. S. Cumbee, S. V. DePalo, K. Dolag, M. Donahue, W. B. Doriese, J. J. Drake, W. Dunn, M. E. Eckart, D. Eckert, S. Ettori, Y. Ezoe, C. H. Feldman, E. Flaccomio, W. R. Forman, M. Galeazzi, A. C. Gall, C. Garraffo, M. Gonzalez, N. Grosso, J. Hartley, N. Hell, L. Hernquist, E. Hodges-Kluck, J. Houston, S. V. Hull, N. Islam, P. M. Janas, F. J. Jennings, C. Jones, P. Kaaret, H. Kanner, M. Karovska, V. Kashyap, P. J. Kavanagh, R. L. Kelley, I. Khabibullin, C. A. Kilbourne, C. G. Kim, D. Koutroumpa, O. E. Kovács, K. D. Kuntz, S. H. Lee, M. A. Leutenegger, T. Linn, S. Lotti, M. Markevitch, K. Martin, L. May, D. McCammon, S. C. McEntee, S. Mei, F. Mernier, M. Miceli, J. B. Miller, M. S. Mirakhor, K. Monsch, Y. Nazé, D. Nelson, A. A. Nordt, A. Ogorzalek, J. Olson, S. Orlando, E. Osborne, L. M. Oskinova, D. Patnaude, R. W. Pfeifle, C. Pinto, P. Plucinsky, G. Ponti, D. Porquet, F. S. Porter, D. Préle, S. Ramm, S. W. Randall, E. Rasia, M. M. Rau, S. Richardson, K. S. Sakai, A. Sarkar, G. Schellenberger, S. Sciortino, J. Schaye, A. Simionescu, S. J. Smith, M. Sobolewska, J. F. Steiner, J. Stern, Y. Su, M. Sun, N. Truong, E. Ursino, M. Valentini, S. Veilleux, S. Vladutescu-Zopp, M. Vogelsberger, N. A. Wakeham, S. A. Walker, Q. D. Wang, B. Wargelin, K. A. Weaver, J. K. Werk, N. Werner, S. J. Wolk, C. Zhang, W. W. Zhang, I. Zhuravleva

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

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^′ × 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.

Original language	English
Title of host publication	Space Telescopes and Instrumentation 2024
Subtitle of host publication	Ultraviolet to Gamma Ray
Editors	Jan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa
Publisher	SPIE
ISBN (Electronic)	9781510675094
DOIs	https://doi.org/10.1117/12.3019969
State	Published - 2024
Event	Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray - Yokohama, Japan Duration: 16 Jun 2024 → 21 Jun 2024

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	13093
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray
Country/Territory	Japan
City	Yokohama
Period	16/06/24 → 21/06/24

Funding

Funders	Funder number
U.S. Department of Energy
National Aeronautics and Space Administration	80GSFC21M0002
Lawrence Livermore National Laboratory	DE-AC52-07NA27344

Keywords

Active galactic nuclei
Astronomical instrumentation
Circumgalactic medium
Galaxy clusters
Galaxy evolution
High energy astrophysics
High resolution spectroscopy
Large-scale structure of the universe
Milky Way Galaxy
Star forming regions
Supernova remnants
X-ray observatories

Access to Document

10.1117/12.3019969

Cite this

Kraft, R., Bogdán, ZuHone, J., Adams, J. S., Alvarado-Gómez, J. D., Argiroffi, C., Ayromlou, M., Azadi, M., Bandler, S. R., Barbera, M., Bhardwaj, A., Biffi, V., Bodewits, D., Boettcher, E., Branham, B., Burchett, J. N., Burke, D. J., Cann, J., Carter, J. A., ... Zhuravleva, I. (2024). The Line Emission Mapper (LEM) Probe Mission Concept. In J.-W. A. den Herder, S. Nikzad, & K. Nakazawa (Eds.), Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray Article 1309327 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13093). SPIE. https://doi.org/10.1117/12.3019969

@inproceedings{8b015def37334363bbdb1875c9901517,

title = "The Line Emission Mapper (LEM) Probe Mission Concept",

abstract = "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′ × 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.",

keywords = "Active galactic nuclei, Astronomical instrumentation, Circumgalactic medium, Galaxy clusters, Galaxy evolution, High energy astrophysics, High resolution spectroscopy, Large-scale structure of the universe, Milky Way Galaxy, Star forming regions, Supernova remnants, X-ray observatories",

author = "R. Kraft and Bogd{\'a}n and J. ZuHone and Adams, {J. S.} and Alvarado-G{\'o}mez, {J. D.} and C. Argiroffi and M. Ayromlou and M. Azadi and Bandler, {S. R.} and M. Barbera and A. Bhardwaj and V. Biffi and D. Bodewits and E. Boettcher and B. Branham and Burchett, {J. N.} and Burke, {D. J.} and J. Cann and Carter, {J. A.} and D. Castro and P. Chakraborty and Chan, {K. W.} and S. Chen and E. Churazov and K. Coderre and Corcoran, {M. F.} and Cumbee, {R. S.} and DePalo, {S. V.} and K. Dolag and M. Donahue and Doriese, {W. B.} and Drake, {J. J.} and W. Dunn and Eckart, {M. E.} and D. Eckert and S. Ettori and Y. Ezoe and Feldman, {C. H.} and E. Flaccomio and Forman, {W. R.} and M. Galeazzi and Gall, {A. C.} and C. Garraffo and M. Gonzalez and N. Grosso and J. Hartley and N. Hell and L. Hernquist and E. Hodges-Kluck and J. Houston and Hull, {S. V.} and N. Islam and Janas, {P. M.} and Jennings, {F. J.} and C. Jones and P. Kaaret and H. Kanner and M. Karovska and V. Kashyap and Kavanagh, {P. J.} and Kelley, {R. L.} and I. Khabibullin and Kilbourne, {C. A.} and Kim, {C. G.} and D. Koutroumpa and Kov{\'a}cs, {O. E.} and Kuntz, {K. D.} and Lee, {S. H.} and Leutenegger, {M. A.} and T. Linn and S. Lotti and M. Markevitch and K. Martin and L. May and D. McCammon and McEntee, {S. C.} and S. Mei and F. Mernier and M. Miceli and Miller, {J. B.} and Mirakhor, {M. S.} and K. Monsch and Y. Naz{\'e} and D. Nelson and Nordt, {A. A.} and A. Ogorzalek and J. Olson and S. Orlando and E. Osborne and Oskinova, {L. M.} and D. Patnaude and Pfeifle, {R. W.} and C. Pinto and P. Plucinsky and G. Ponti and D. Porquet and Porter, {F. S.} and D. Pr{\'e}le and S. Ramm and Randall, {S. W.} and E. Rasia and Rau, {M. M.} and S. Richardson and Sakai, {K. S.} and A. Sarkar and G. Schellenberger and S. Sciortino and J. Schaye and A. Simionescu and Smith, {S. J.} and M. Sobolewska and Steiner, {J. F.} and J. Stern and Y. Su and M. Sun and N. Truong and E. Ursino and M. Valentini and S. Veilleux and S. Vladutescu-Zopp and M. Vogelsberger and Wakeham, {N. A.} and Walker, {S. A.} and Wang, {Q. D.} and B. Wargelin and Weaver, {K. A.} and Werk, {J. K.} and N. Werner and Wolk, {S. J.} and C. Zhang and Zhang, {W. W.} and I. Zhuravleva",

note = "Publisher Copyright: {\textcopyright} 2024 SPIE.; Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray ; Conference date: 16-06-2024 Through 21-06-2024",

year = "2024",

doi = "10.1117/12.3019969",

language = "אנגלית",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "{den Herder}, {Jan-Willem A.} and Shouleh Nikzad and Kazuhiro Nakazawa",

booktitle = "Space Telescopes and Instrumentation 2024",

address = "ארצות הברית",

}

Kraft, R, Bogdán, ZuHone, J, Adams, JS, Alvarado-Gómez, JD, Argiroffi, C, Ayromlou, M, Azadi, M, Bandler, SR, Barbera, M, Bhardwaj, A, Biffi, V, Bodewits, D, Boettcher, E, Branham, B, Burchett, JN, Burke, DJ, Cann, J, Carter, JA, Castro, D, Chakraborty, P, Chan, KW, Chen, S, Churazov, E, Coderre, K, Corcoran, MF, Cumbee, RS, DePalo, SV, Dolag, K, Donahue, M, Doriese, WB, Drake, JJ, Dunn, W, Eckart, ME, Eckert, D, Ettori, S, Ezoe, Y, Feldman, CH, Flaccomio, E, Forman, WR, Galeazzi, M, Gall, AC, Garraffo, C, Gonzalez, M, Grosso, N, Hartley, J, Hell, N, Hernquist, L, Hodges-Kluck, E, Houston, J, Hull, SV, Islam, N, Janas, PM, Jennings, FJ, Jones, C, Kaaret, P, Kanner, H, Karovska, M, Kashyap, V, Kavanagh, PJ, Kelley, RL, Khabibullin, I, Kilbourne, CA, Kim, CG, Koutroumpa, D, Kovács, OE, Kuntz, KD, Lee, SH, Leutenegger, MA, Linn, T, Lotti, S, Markevitch, M, Martin, K, May, L, McCammon, D, McEntee, SC, Mei, S, Mernier, F, Miceli, M, Miller, JB, Mirakhor, MS, Monsch, K, Nazé, Y, Nelson, D, Nordt, AA, Ogorzalek, A, Olson, J, Orlando, S, Osborne, E, Oskinova, LM, Patnaude, D, Pfeifle, RW, Pinto, C, Plucinsky, P, Ponti, G, Porquet, D, Porter, FS, Préle, D, Ramm, S, Randall, SW, Rasia, E, Rau, MM, Richardson, S, Sakai, KS, Sarkar, A, Schellenberger, G, Sciortino, S, Schaye, J, Simionescu, A, Smith, SJ, Sobolewska, M, Steiner, JF, Stern, J, Su, Y, Sun, M, Truong, N, Ursino, E, Valentini, M, Veilleux, S, Vladutescu-Zopp, S, Vogelsberger, M, Wakeham, NA, Walker, SA, Wang, QD, Wargelin, B, Weaver, KA, Werk, JK, Werner, N, Wolk, SJ, Zhang, C, Zhang, WW & Zhuravleva, I 2024, The Line Emission Mapper (LEM) Probe Mission Concept. in J-WA den Herder, S Nikzad & K Nakazawa (eds), Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray., 1309327, Proceedings of SPIE - The International Society for Optical Engineering, vol. 13093, SPIE, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, Yokohama, Japan, 16/06/24. https://doi.org/10.1117/12.3019969

The Line Emission Mapper (LEM) Probe Mission Concept. / Kraft, R.; Bogdán; ZuHone, J. et al.
Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray. ed. / Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa. SPIE, 2024. 1309327 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13093).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - The Line Emission Mapper (LEM) Probe Mission Concept

AU - Kraft, R.

AU - Bogdán,

AU - ZuHone, J.

AU - Adams, J. S.

AU - Alvarado-Gómez, J. D.

AU - Argiroffi, C.

AU - Ayromlou, M.

AU - Azadi, M.

AU - Bandler, S. R.

AU - Barbera, M.

AU - Bhardwaj, A.

AU - Biffi, V.

AU - Bodewits, D.

AU - Boettcher, E.

AU - Branham, B.

AU - Burchett, J. N.

AU - Burke, D. J.

AU - Cann, J.

AU - Carter, J. A.

AU - Castro, D.

AU - Chakraborty, P.

AU - Chan, K. W.

AU - Chen, S.

AU - Churazov, E.

AU - Coderre, K.

AU - Corcoran, M. F.

AU - Cumbee, R. S.

AU - DePalo, S. V.

AU - Dolag, K.

AU - Donahue, M.

AU - Doriese, W. B.

AU - Drake, J. J.

AU - Dunn, W.

AU - Eckart, M. E.

AU - Eckert, D.

AU - Ettori, S.

AU - Ezoe, Y.

AU - Feldman, C. H.

AU - Flaccomio, E.

AU - Forman, W. R.

AU - Galeazzi, M.

AU - Gall, A. C.

AU - Garraffo, C.

AU - Gonzalez, M.

AU - Grosso, N.

AU - Hartley, J.

AU - Hell, N.

AU - Hernquist, L.

AU - Hodges-Kluck, E.

AU - Houston, J.

AU - Hull, S. V.

AU - Islam, N.

AU - Janas, P. M.

AU - Jennings, F. J.

AU - Jones, C.

AU - Kaaret, P.

AU - Kanner, H.

AU - Karovska, M.

AU - Kashyap, V.

AU - Kavanagh, P. J.

AU - Kelley, R. L.

AU - Khabibullin, I.

AU - Kilbourne, C. A.

AU - Kim, C. G.

AU - Koutroumpa, D.

AU - Kovács, O. E.

AU - Kuntz, K. D.

AU - Lee, S. H.

AU - Leutenegger, M. A.

AU - Linn, T.

AU - Lotti, S.

AU - Markevitch, M.

AU - Martin, K.

AU - May, L.

AU - McCammon, D.

AU - McEntee, S. C.

AU - Mei, S.

AU - Mernier, F.

AU - Miceli, M.

AU - Miller, J. B.

AU - Mirakhor, M. S.

AU - Monsch, K.

AU - Nazé, Y.

AU - Nelson, D.

AU - Nordt, A. A.

AU - Ogorzalek, A.

AU - Olson, J.

AU - Orlando, S.

AU - Osborne, E.

AU - Oskinova, L. M.

AU - Patnaude, D.

AU - Pfeifle, R. W.

AU - Pinto, C.

AU - Plucinsky, P.

AU - Ponti, G.

AU - Porquet, D.

AU - Porter, F. S.

AU - Préle, D.

AU - Ramm, S.

AU - Randall, S. W.

AU - Rasia, E.

AU - Rau, M. M.

AU - Richardson, S.

AU - Sakai, K. S.

AU - Sarkar, A.

AU - Schellenberger, G.

AU - Sciortino, S.

AU - Schaye, J.

AU - Simionescu, A.

AU - Smith, S. J.

AU - Sobolewska, M.

AU - Steiner, J. F.

AU - Stern, J.

AU - Su, Y.

AU - Sun, M.

AU - Truong, N.

AU - Ursino, E.

AU - Valentini, M.

AU - Veilleux, S.

AU - Vladutescu-Zopp, S.

AU - Vogelsberger, M.

AU - Wakeham, N. A.

AU - Walker, S. A.

AU - Wang, Q. D.

AU - Wargelin, B.

AU - Weaver, K. A.

AU - Werk, J. K.

AU - Werner, N.

AU - Wolk, S. J.

AU - Zhang, C.

AU - Zhang, W. W.

AU - Zhuravleva, I.

PY - 2024

Y1 - 2024

N2 - 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′ × 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.

AB - 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′ × 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.

KW - Active galactic nuclei

KW - Astronomical instrumentation

KW - Circumgalactic medium

KW - Galaxy clusters

KW - Galaxy evolution

KW - High energy astrophysics

KW - High resolution spectroscopy

KW - Large-scale structure of the universe

KW - Milky Way Galaxy

KW - Star forming regions

KW - Supernova remnants

KW - X-ray observatories

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U2 - 10.1117/12.3019969

DO - 10.1117/12.3019969

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Space Telescopes and Instrumentation 2024

A2 - den Herder, Jan-Willem A.

A2 - Nikzad, Shouleh

A2 - Nakazawa, Kazuhiro

PB - SPIE

T2 - Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray

Y2 - 16 June 2024 through 21 June 2024

ER -

The Line Emission Mapper (LEM) Probe Mission Concept

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