HIRAX: A Probe of Dark Energy and Radio Transients

L. B. Newburgh; K. Bandura; M. A. Bucher; T. C. Chang; H. C. Chiang; J. F. Cliche; R. Dave; M. Dobbs; C. Clarkson; K. M. Ganga; T. Gogo; A. Gumba; N. Gupta; M. Hilton; B. Johnstone; A. Karastergiou; M. Kunz; D. Lokhorst; R. Maartens; S. Macpherson; M. Mdlalose; K. Moodley; L. Ngwenya; J. M. Parra; J. Peterson; O. Recnik; B. Saliwanchik; M. G. Santos; J. L. Sievers; O. Smirnov; P. Stronkhorst; R. Taylor; K. Vanderlinde; G. Van Vuuren; A. Weltman; A. Witzemann

doi:10.1117/12.2234286

HIRAX: A Probe of Dark Energy and Radio Transients

L. B. Newburgh^*, K. Bandura, M. A. Bucher, T. C. Chang, H. C. Chiang, J. F. Cliche, R. Dave, M. Dobbs, C. Clarkson, K. M. Ganga, T. Gogo, A. Gumba, N. Gupta, M. Hilton, B. Johnstone, A. Karastergiou, M. Kunz, D. Lokhorst, R. Maartens, S. MacphersonM. Mdlalose, K. Moodley, L. Ngwenya, J. M. Parra, J. Peterson, O. Recnik, B. Saliwanchik, M. G. Santos, J. L. Sievers, O. Smirnov, P. Stronkhorst, R. Taylor, K. Vanderlinde, G. Van Vuuren, A. Weltman, A. Witzemann

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract / Description of output

The Hydrogen Intensity and Real-Time Analysis eXperiment (HIRAX) is a new 400{800MHz radio interferometer under development for deployment in South Africa. HIRAX will comprise 1024 six meter parabolic dishes on a compact grid and will map most of the southern sky over the course of four years. HIRAX has two primary science goals: To constrain Dark Energy and measure structure at high redshift, and to study radio transients and pulsars. HIRAX will observe unresolved sources of neutral hydrogen via their redshifted 21-cm emission line ('hydrogen intensity mapping'). The resulting maps of large-scale structure at redshifts 0.8{2.5 will be used to measure Baryon Acoustic Oscillations (BAO). BAO are a preferential length scale in the matter distribution that can be used to characterize the expansion history of the Universe and thus understand the properties of Dark Energy. HIRAX will improve upon current BAO measurements from galaxy surveys by observing a larger cosmological volume (larger in both survey area and redshift range) and by measuring BAO at higher redshift when the expansion of the universe transitioned to Dark Energy domination. HIRAX will complement CHIME, a hydrogen intensity mapping experiment in the Northern Hemisphere, by completing the sky coverage in the same redshift range. HIRAX's location in the Southern Hemisphere also allows a variety of cross-correlation measurements with large-scale structure surveys at many wavelengths. Daily maps of a few thousand square degrees of the Southern Hemisphere, encompassing much of the Milky Way galaxy, will also open new opportunities for discovering and monitoring radio transients. The HIRAX correlator will have the ability to rapidly and efficiently detect transient events. This new data will shed light on the poorly understood nature of fast radio bursts (FRBs), enable pulsar monitoring to enhance long-wavelength gravitational wave searches, and provide a rich data set for new radio transient phenomena searches. This paper discusses the HIRAX instrument, science goals, and current status.

Original language	English
Title of host publication	Ground-Based and Airborne Telescopes VI
Editors	Heather K. Marshall, Helen J. Hall, Roberto Gilmozzi
Publisher	SPIE
ISBN (Electronic)	9781510601918
DOIs	https://doi.org/10.1117/12.2234286
Publication status	Published - 8 Aug 2016
Event	Ground-Based and Airborne Telescopes VI - Edinburgh, United Kingdom Duration: 26 Jun 2016 → 1 Jul 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9906
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Ground-Based and Airborne Telescopes VI
Country/Territory	United Kingdom
City	Edinburgh
Period	26/06/16 → 1/07/16

Keywords / Materials (for Non-textual outputs)

21cm
Cosmology
Dark energy
Intensity mapping
Large-scale structure

Access to Document

10.1117/12.2234286

1607.02059Accepted author manuscript, 10 MB

https://arxiv.org/abs/1607.02059

Cite this

Newburgh, L. B., Bandura, K., Bucher, M. A., Chang, T. C., Chiang, H. C., Cliche, J. F., Dave, R., Dobbs, M., Clarkson, C., Ganga, K. M., Gogo, T., Gumba, A., Gupta, N., Hilton, M., Johnstone, B., Karastergiou, A., Kunz, M., Lokhorst, D., Maartens, R., ... Witzemann, A. (2016). HIRAX: A Probe of Dark Energy and Radio Transients. In H. K. Marshall, H. J. Hall, & R. Gilmozzi (Eds.), Ground-Based and Airborne Telescopes VI Article 99065X (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9906). SPIE. https://doi.org/10.1117/12.2234286

@inproceedings{cc72af8c4a3d41c2b9463ac57fbce718,

title = "HIRAX: A Probe of Dark Energy and Radio Transients",

abstract = "The Hydrogen Intensity and Real-Time Analysis eXperiment (HIRAX) is a new 400{800MHz radio interferometer under development for deployment in South Africa. HIRAX will comprise 1024 six meter parabolic dishes on a compact grid and will map most of the southern sky over the course of four years. HIRAX has two primary science goals: To constrain Dark Energy and measure structure at high redshift, and to study radio transients and pulsars. HIRAX will observe unresolved sources of neutral hydrogen via their redshifted 21-cm emission line ('hydrogen intensity mapping'). The resulting maps of large-scale structure at redshifts 0.8{2.5 will be used to measure Baryon Acoustic Oscillations (BAO). BAO are a preferential length scale in the matter distribution that can be used to characterize the expansion history of the Universe and thus understand the properties of Dark Energy. HIRAX will improve upon current BAO measurements from galaxy surveys by observing a larger cosmological volume (larger in both survey area and redshift range) and by measuring BAO at higher redshift when the expansion of the universe transitioned to Dark Energy domination. HIRAX will complement CHIME, a hydrogen intensity mapping experiment in the Northern Hemisphere, by completing the sky coverage in the same redshift range. HIRAX's location in the Southern Hemisphere also allows a variety of cross-correlation measurements with large-scale structure surveys at many wavelengths. Daily maps of a few thousand square degrees of the Southern Hemisphere, encompassing much of the Milky Way galaxy, will also open new opportunities for discovering and monitoring radio transients. The HIRAX correlator will have the ability to rapidly and efficiently detect transient events. This new data will shed light on the poorly understood nature of fast radio bursts (FRBs), enable pulsar monitoring to enhance long-wavelength gravitational wave searches, and provide a rich data set for new radio transient phenomena searches. This paper discusses the HIRAX instrument, science goals, and current status.",

keywords = "21cm, Cosmology, Dark energy, Intensity mapping, Large-scale structure",

author = "Newburgh, {L. B.} and K. Bandura and Bucher, {M. A.} and Chang, {T. C.} and Chiang, {H. C.} and Cliche, {J. F.} and R. Dave and M. Dobbs and C. Clarkson and Ganga, {K. M.} and T. Gogo and A. Gumba and N. Gupta and M. Hilton and B. Johnstone and A. Karastergiou and M. Kunz and D. Lokhorst and R. Maartens and S. Macpherson and M. Mdlalose and K. Moodley and L. Ngwenya and Parra, {J. M.} and J. Peterson and O. Recnik and B. Saliwanchik and Santos, {M. G.} and Sievers, {J. L.} and O. Smirnov and P. Stronkhorst and R. Taylor and K. Vanderlinde and Vuuren, {G. Van} and A. Weltman and A. Witzemann",

year = "2016",

month = aug,

day = "8",

doi = "10.1117/12.2234286",

language = "English",

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

publisher = "SPIE",

editor = "Marshall, {Heather K.} and Hall, {Helen J.} and Roberto Gilmozzi",

booktitle = "Ground-Based and Airborne Telescopes VI",

address = "United States",

note = "Ground-Based and Airborne Telescopes VI ; Conference date: 26-06-2016 Through 01-07-2016",

}

Newburgh, LB, Bandura, K, Bucher, MA, Chang, TC, Chiang, HC, Cliche, JF, Dave, R, Dobbs, M, Clarkson, C, Ganga, KM, Gogo, T, Gumba, A, Gupta, N, Hilton, M, Johnstone, B, Karastergiou, A, Kunz, M, Lokhorst, D, Maartens, R, Macpherson, S, Mdlalose, M, Moodley, K, Ngwenya, L, Parra, JM, Peterson, J, Recnik, O, Saliwanchik, B, Santos, MG, Sievers, JL, Smirnov, O, Stronkhorst, P, Taylor, R, Vanderlinde, K, Vuuren, GV, Weltman, A & Witzemann, A 2016, HIRAX: A Probe of Dark Energy and Radio Transients. in HK Marshall, HJ Hall & R Gilmozzi (eds), Ground-Based and Airborne Telescopes VI., 99065X, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9906, SPIE, Ground-Based and Airborne Telescopes VI, Edinburgh, United Kingdom, 26/06/16. https://doi.org/10.1117/12.2234286

HIRAX: A Probe of Dark Energy and Radio Transients. / Newburgh, L. B.; Bandura, K.; Bucher, M. A. et al.
Ground-Based and Airborne Telescopes VI. ed. / Heather K. Marshall; Helen J. Hall; Roberto Gilmozzi. SPIE, 2016. 99065X (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9906).

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

TY - GEN

T1 - HIRAX

T2 - Ground-Based and Airborne Telescopes VI

AU - Newburgh, L. B.

AU - Bandura, K.

AU - Bucher, M. A.

AU - Chang, T. C.

AU - Chiang, H. C.

AU - Cliche, J. F.

AU - Dave, R.

AU - Dobbs, M.

AU - Clarkson, C.

AU - Ganga, K. M.

AU - Gogo, T.

AU - Gumba, A.

AU - Gupta, N.

AU - Hilton, M.

AU - Johnstone, B.

AU - Karastergiou, A.

AU - Kunz, M.

AU - Lokhorst, D.

AU - Maartens, R.

AU - Macpherson, S.

AU - Mdlalose, M.

AU - Moodley, K.

AU - Ngwenya, L.

AU - Parra, J. M.

AU - Peterson, J.

AU - Recnik, O.

AU - Saliwanchik, B.

AU - Santos, M. G.

AU - Sievers, J. L.

AU - Smirnov, O.

AU - Stronkhorst, P.

AU - Taylor, R.

AU - Vanderlinde, K.

AU - Vuuren, G. Van

AU - Weltman, A.

AU - Witzemann, A.

PY - 2016/8/8

Y1 - 2016/8/8

N2 - The Hydrogen Intensity and Real-Time Analysis eXperiment (HIRAX) is a new 400{800MHz radio interferometer under development for deployment in South Africa. HIRAX will comprise 1024 six meter parabolic dishes on a compact grid and will map most of the southern sky over the course of four years. HIRAX has two primary science goals: To constrain Dark Energy and measure structure at high redshift, and to study radio transients and pulsars. HIRAX will observe unresolved sources of neutral hydrogen via their redshifted 21-cm emission line ('hydrogen intensity mapping'). The resulting maps of large-scale structure at redshifts 0.8{2.5 will be used to measure Baryon Acoustic Oscillations (BAO). BAO are a preferential length scale in the matter distribution that can be used to characterize the expansion history of the Universe and thus understand the properties of Dark Energy. HIRAX will improve upon current BAO measurements from galaxy surveys by observing a larger cosmological volume (larger in both survey area and redshift range) and by measuring BAO at higher redshift when the expansion of the universe transitioned to Dark Energy domination. HIRAX will complement CHIME, a hydrogen intensity mapping experiment in the Northern Hemisphere, by completing the sky coverage in the same redshift range. HIRAX's location in the Southern Hemisphere also allows a variety of cross-correlation measurements with large-scale structure surveys at many wavelengths. Daily maps of a few thousand square degrees of the Southern Hemisphere, encompassing much of the Milky Way galaxy, will also open new opportunities for discovering and monitoring radio transients. The HIRAX correlator will have the ability to rapidly and efficiently detect transient events. This new data will shed light on the poorly understood nature of fast radio bursts (FRBs), enable pulsar monitoring to enhance long-wavelength gravitational wave searches, and provide a rich data set for new radio transient phenomena searches. This paper discusses the HIRAX instrument, science goals, and current status.

AB - The Hydrogen Intensity and Real-Time Analysis eXperiment (HIRAX) is a new 400{800MHz radio interferometer under development for deployment in South Africa. HIRAX will comprise 1024 six meter parabolic dishes on a compact grid and will map most of the southern sky over the course of four years. HIRAX has two primary science goals: To constrain Dark Energy and measure structure at high redshift, and to study radio transients and pulsars. HIRAX will observe unresolved sources of neutral hydrogen via their redshifted 21-cm emission line ('hydrogen intensity mapping'). The resulting maps of large-scale structure at redshifts 0.8{2.5 will be used to measure Baryon Acoustic Oscillations (BAO). BAO are a preferential length scale in the matter distribution that can be used to characterize the expansion history of the Universe and thus understand the properties of Dark Energy. HIRAX will improve upon current BAO measurements from galaxy surveys by observing a larger cosmological volume (larger in both survey area and redshift range) and by measuring BAO at higher redshift when the expansion of the universe transitioned to Dark Energy domination. HIRAX will complement CHIME, a hydrogen intensity mapping experiment in the Northern Hemisphere, by completing the sky coverage in the same redshift range. HIRAX's location in the Southern Hemisphere also allows a variety of cross-correlation measurements with large-scale structure surveys at many wavelengths. Daily maps of a few thousand square degrees of the Southern Hemisphere, encompassing much of the Milky Way galaxy, will also open new opportunities for discovering and monitoring radio transients. The HIRAX correlator will have the ability to rapidly and efficiently detect transient events. This new data will shed light on the poorly understood nature of fast radio bursts (FRBs), enable pulsar monitoring to enhance long-wavelength gravitational wave searches, and provide a rich data set for new radio transient phenomena searches. This paper discusses the HIRAX instrument, science goals, and current status.

KW - 21cm

KW - Cosmology

KW - Dark energy

KW - Intensity mapping

KW - Large-scale structure

UR - http://www.scopus.com/inward/record.url?scp=85001115504&partnerID=8YFLogxK

U2 - 10.1117/12.2234286

DO - 10.1117/12.2234286

M3 - Conference contribution

AN - SCOPUS:85001115504

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

BT - Ground-Based and Airborne Telescopes VI

A2 - Marshall, Heather K.

A2 - Hall, Helen J.

A2 - Gilmozzi, Roberto

PB - SPIE

Y2 - 26 June 2016 through 1 July 2016

ER -

HIRAX: A Probe of Dark Energy and Radio Transients

Abstract / Description of output

Publication series

Conference

Keywords / Materials (for Non-textual outputs)

Access to Document

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