COMAP Early Science. II. Pathfinder Instrument

James W. Lamb; Kieran A. Cleary; David P. Woody; Morgan Catha; Dongwoo T. Chung; Joshua Ott Gundersen; Stuart E. Harper; Andrew I. Harris; Richard Hobbs; Håvard T. Ihle; Jonathon Kocz; Timothy J. Pearson; Liju Philip; Travis W. Powell; Lilian Basoalto; J. Richard Bond; Jowita Borowska; Patrick C. Breysse; Sarah E. Church; Clive Dickinson; Delaney A. Dunne; Hans Kristian Eriksen; Marie Kristine Foss; Todd Gaier; Junhan Kim; Charles R. Lawrence; Jonas G. S. Lunde; Hamsa Padmanabhan; Maren Rasmussen; Anthony C. S. Readhead; Rodrigo Reeves; Thomas J. Rennie; Nils-Ole Stutzer; Marco P. Viero; Duncan J. Watts; Ingunn Kathrine Wehus; Comap Collaboration

doi:10.3847/1538-4357/ac63c6

COMAP Early Science. II. Pathfinder Instrument

James W. Lamb, Kieran A. Cleary, David P. Woody, Morgan Catha, Dongwoo T. Chung, Joshua Ott Gundersen, Stuart E. Harper, Andrew I. Harris, Richard Hobbs, Håvard T. Ihle, Jonathon Kocz, Timothy J. Pearson, Liju Philip, Travis W. Powell, Lilian Basoalto, J. Richard Bond, Jowita Borowska, Patrick C. Breysse, Sarah E. Church, Clive DickinsonDelaney A. Dunne, Hans Kristian Eriksen, Marie Kristine Foss, Todd Gaier, Junhan Kim, Charles R. Lawrence, Jonas G. S. Lunde, Hamsa Padmanabhan, Maren Rasmussen, Anthony C. S. Readhead, Rodrigo Reeves, Thomas J. Rennie, Nils-Ole Stutzer, Marco P. Viero, Duncan J. Watts, Ingunn Kathrine Wehus, Comap Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

Line intensity mapping (LIM) is a new technique for tracing the global properties of galaxies over cosmic time. Detection of the very faint signals from redshifted carbon monoxide (CO), a tracer of star formation, pushes the limits of what is feasible with a total-power instrument. The CO Mapping Project Pathfinder is a first-generation instrument aiming to prove the concept and develop the technology for future experiments, as well as delivering early science products. With 19 receiver channels in a hexagonal focal plane arrangement on a 10.4 m antenna and an instantaneous 26-34 GHz frequency range with 2 MHz resolution, it is ideally suited to measuring CO (J = 1-0) from z ~ 3. In this paper we discuss strategies for designing and building the Pathfinder and the challenges that were encountered. The design of the instrument prioritized LIM requirements over those of ancillary science. After a couple of years of operation, the instrument is well understood, and the first year of data is already yielding useful science results. Experience with this Pathfinder will guide the design of the next generations of experiments.

Original language	English
Journal	The Astrophysical Journal
Volume	933
DOIs	https://doi.org/10.3847/1538-4357/ac63c6
Publication status	Published - 1 Jul 2022

Keywords

Astronomical instrumentation
Cassegrain telescopes
Galaxy clusters
Galaxy formation
High-redshift galaxy clusters
Molecular gas
Radio astronomy
Radio telescopes
799
202
584
595
2007
1073
1338
1360
Astrophysics - Instrumentation and Methods for Astrophysics
Astrophysics - Cosmology and Nongalactic Astrophysics
Astrophysics - Astrophysics of Galaxies

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10.3847/1538-4357/ac63c6

https://ui.adsabs.harvard.edu/abs/2022ApJ...933..183L

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Lamb, J. W., Cleary, K. A., Woody, D. P., Catha, M., Chung, D. T., Gundersen, J. O., Harper, S. E., Harris, A. I., Hobbs, R., Ihle, H. T., Kocz, J., Pearson, T. J., Philip, L., Powell, T. W., Basoalto, L., Bond, J. R., Borowska, J., Breysse, P. C., Church, S. E., ... Collaboration, C. (2022). COMAP Early Science. II. Pathfinder Instrument. The Astrophysical Journal, 933. https://doi.org/10.3847/1538-4357/ac63c6

@article{77d714747a54490d9c2d9ab6e5dac518,

title = "COMAP Early Science. II. Pathfinder Instrument",

abstract = "Line intensity mapping (LIM) is a new technique for tracing the global properties of galaxies over cosmic time. Detection of the very faint signals from redshifted carbon monoxide (CO), a tracer of star formation, pushes the limits of what is feasible with a total-power instrument. The CO Mapping Project Pathfinder is a first-generation instrument aiming to prove the concept and develop the technology for future experiments, as well as delivering early science products. With 19 receiver channels in a hexagonal focal plane arrangement on a 10.4 m antenna and an instantaneous 26-34 GHz frequency range with 2 MHz resolution, it is ideally suited to measuring CO (J = 1-0) from z ~ 3. In this paper we discuss strategies for designing and building the Pathfinder and the challenges that were encountered. The design of the instrument prioritized LIM requirements over those of ancillary science. After a couple of years of operation, the instrument is well understood, and the first year of data is already yielding useful science results. Experience with this Pathfinder will guide the design of the next generations of experiments.",

keywords = "Astronomical instrumentation, Cassegrain telescopes, Galaxy clusters, Galaxy formation, High-redshift galaxy clusters, Molecular gas, Radio astronomy, Radio telescopes, 799, 202, 584, 595, 2007, 1073, 1338, 1360, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies",

author = "Lamb, {James W.} and Cleary, {Kieran A.} and Woody, {David P.} and Morgan Catha and Chung, {Dongwoo T.} and Gundersen, {Joshua Ott} and Harper, {Stuart E.} and Harris, {Andrew I.} and Richard Hobbs and Ihle, {H{\aa}vard T.} and Jonathon Kocz and Pearson, {Timothy J.} and Liju Philip and Powell, {Travis W.} and Lilian Basoalto and Bond, {J. Richard} and Jowita Borowska and Breysse, {Patrick C.} and Church, {Sarah E.} and Clive Dickinson and Dunne, {Delaney A.} and Eriksen, {Hans Kristian} and Foss, {Marie Kristine} and Todd Gaier and Junhan Kim and Lawrence, {Charles R.} and Lunde, {Jonas G. S.} and Hamsa Padmanabhan and Maren Rasmussen and Readhead, {Anthony C. S.} and Rodrigo Reeves and Rennie, {Thomas J.} and Nils-Ole Stutzer and Viero, {Marco P.} and Watts, {Duncan J.} and Wehus, {Ingunn Kathrine} and Comap Collaboration",

year = "2022",

month = jul,

day = "1",

doi = "10.3847/1538-4357/ac63c6",

language = "English",

volume = "933",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

}

Lamb, JW, Cleary, KA, Woody, DP, Catha, M, Chung, DT, Gundersen, JO, Harper, SE, Harris, AI, Hobbs, R, Ihle, HT, Kocz, J, Pearson, TJ, Philip, L, Powell, TW, Basoalto, L, Bond, JR, Borowska, J, Breysse, PC, Church, SE, Dickinson, C, Dunne, DA, Eriksen, HK, Foss, MK, Gaier, T, Kim, J, Lawrence, CR, Lunde, JGS, Padmanabhan, H, Rasmussen, M, Readhead, ACS, Reeves, R, Rennie, TJ, Stutzer, N-O, Viero, MP, Watts, DJ, Wehus, IK & Collaboration, C 2022, 'COMAP Early Science. II. Pathfinder Instrument', The Astrophysical Journal, vol. 933. https://doi.org/10.3847/1538-4357/ac63c6

TY - JOUR

T1 - COMAP Early Science. II. Pathfinder Instrument

AU - Lamb, James W.

AU - Cleary, Kieran A.

AU - Woody, David P.

AU - Catha, Morgan

AU - Chung, Dongwoo T.

AU - Gundersen, Joshua Ott

AU - Harper, Stuart E.

AU - Harris, Andrew I.

AU - Hobbs, Richard

AU - Ihle, Håvard T.

AU - Kocz, Jonathon

AU - Pearson, Timothy J.

AU - Philip, Liju

AU - Powell, Travis W.

AU - Basoalto, Lilian

AU - Bond, J. Richard

AU - Borowska, Jowita

AU - Breysse, Patrick C.

AU - Church, Sarah E.

AU - Dickinson, Clive

AU - Dunne, Delaney A.

AU - Eriksen, Hans Kristian

AU - Foss, Marie Kristine

AU - Gaier, Todd

AU - Kim, Junhan

AU - Lawrence, Charles R.

AU - Lunde, Jonas G. S.

AU - Padmanabhan, Hamsa

AU - Rasmussen, Maren

AU - Readhead, Anthony C. S.

AU - Reeves, Rodrigo

AU - Rennie, Thomas J.

AU - Stutzer, Nils-Ole

AU - Viero, Marco P.

AU - Watts, Duncan J.

AU - Wehus, Ingunn Kathrine

AU - Collaboration, Comap

PY - 2022/7/1

Y1 - 2022/7/1

N2 - Line intensity mapping (LIM) is a new technique for tracing the global properties of galaxies over cosmic time. Detection of the very faint signals from redshifted carbon monoxide (CO), a tracer of star formation, pushes the limits of what is feasible with a total-power instrument. The CO Mapping Project Pathfinder is a first-generation instrument aiming to prove the concept and develop the technology for future experiments, as well as delivering early science products. With 19 receiver channels in a hexagonal focal plane arrangement on a 10.4 m antenna and an instantaneous 26-34 GHz frequency range with 2 MHz resolution, it is ideally suited to measuring CO (J = 1-0) from z ~ 3. In this paper we discuss strategies for designing and building the Pathfinder and the challenges that were encountered. The design of the instrument prioritized LIM requirements over those of ancillary science. After a couple of years of operation, the instrument is well understood, and the first year of data is already yielding useful science results. Experience with this Pathfinder will guide the design of the next generations of experiments.

AB - Line intensity mapping (LIM) is a new technique for tracing the global properties of galaxies over cosmic time. Detection of the very faint signals from redshifted carbon monoxide (CO), a tracer of star formation, pushes the limits of what is feasible with a total-power instrument. The CO Mapping Project Pathfinder is a first-generation instrument aiming to prove the concept and develop the technology for future experiments, as well as delivering early science products. With 19 receiver channels in a hexagonal focal plane arrangement on a 10.4 m antenna and an instantaneous 26-34 GHz frequency range with 2 MHz resolution, it is ideally suited to measuring CO (J = 1-0) from z ~ 3. In this paper we discuss strategies for designing and building the Pathfinder and the challenges that were encountered. The design of the instrument prioritized LIM requirements over those of ancillary science. After a couple of years of operation, the instrument is well understood, and the first year of data is already yielding useful science results. Experience with this Pathfinder will guide the design of the next generations of experiments.

KW - Astronomical instrumentation

KW - Cassegrain telescopes

KW - Galaxy clusters

KW - Galaxy formation

KW - High-redshift galaxy clusters

KW - Molecular gas

KW - Radio astronomy

KW - Radio telescopes

KW - 799

KW - 202

KW - 584

KW - 595

KW - 2007

KW - 1073

KW - 1338

KW - 1360

KW - Astrophysics - Instrumentation and Methods for Astrophysics

KW - Astrophysics - Cosmology and Nongalactic Astrophysics

KW - Astrophysics - Astrophysics of Galaxies

U2 - 10.3847/1538-4357/ac63c6

DO - 10.3847/1538-4357/ac63c6

M3 - Article

SN - 0004-637X

VL - 933

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -

COMAP Early Science. II. Pathfinder Instrument

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Keywords

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