Limits of noise and confusion in the MWA GLEAM year 1 survey

T.M.O. Franzen; C.A. Jackson; J.R. Callingham; R.D. Ekers; P.J. Hancock; N. Hurley-Walker; J. Morgan; N. Seymour; R.B. Wayth; S.V. White; M.E. Bell; K.S. Dwarakanath; Bi-Qing For; B.M. Gaensler; L. Hindson; M. Johnston-Hollitt; Anna Kapinska; E. Lenc; B. Mckinley; A.R. Offringa; P. Procopio; Lister Staveley-Smith; Chen Wu; Q. Zheng

Limits of noise and confusion in the MWA GLEAM year 1 survey

T.M.O. Franzen, C.A. Jackson, J.R. Callingham, R.D. Ekers, P.J. Hancock, N. Hurley-Walker, J. Morgan, N. Seymour, R.B. Wayth, S.V. White, M.E. Bell, K.S. Dwarakanath, Bi-Qing For, B.M. Gaensler, L. Hindson, M. Johnston-Hollitt, Anna Kapinska, E. Lenc, B. Mckinley, A.R. OffringaP. Procopio, Lister Staveley-Smith, Chen Wu, Q. Zheng

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

Abstract

The GaLactic and Extragalactic All-sky MWA survey (GLEAM) is a new relatively low resolution, contiguous 72-231 MHz survey of the entire sky south of declination +25. In this paper, we outline one approach to determine the relative contribution of system noise, classical confusion and sidelobe confusion in GLEAM images. An understanding of the noise and confusion properties of GLEAM is essential if we are to fully exploit GLEAM data and improve the design of future low-frequency surveys. Our early results indicate that sidelobe confusion dominates over the entire frequency range, implying that enhancements in data processing have the potential to further reduce the noise.

Original language	English
Title of host publication	Proceedings of Science
Place of Publication	Trieste, Italy
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Pages	1-8
Publication status	Published - 2015
Event	The many facets of extragalactic radio surveys: towards new scientific challenges - CRN Research Area, 101 Via Gobetti, Bologna, Italy Duration: 20 Oct 2015 → 23 Oct 2015 Conference number: 123437 https://pos.sissa.it/267/

Conference

Conference	The many facets of extragalactic radio surveys
Abbreviated title	EXTRA-RADSUR2015
Country/Territory	Italy
City	Bologna
Period	20/10/15 → 23/10/15
Internet address	https://pos.sissa.it/267/

Cite this

Franzen, T. M. O., Jackson, C. A., Callingham, J. R., Ekers, R. D., Hancock, P. J., Hurley-Walker, N., Morgan, J., Seymour, N., Wayth, R. B., White, S. V., Bell, M. E., Dwarakanath, K. S., For, B-Q., Gaensler, B. M., Hindson, L., Johnston-Hollitt, M., Kapinska, A., Lenc, E., Mckinley, B., ... Zheng, Q. (2015). Limits of noise and confusion in the MWA GLEAM year 1 survey. In Proceedings of Science (pp. 1-8). Scuola Internazionale Superiore di Studi Avanzati (SISSA).

@inproceedings{1391654a0d4b4b65b22e00fec3cc213a,

title = "Limits of noise and confusion in the MWA GLEAM year 1 survey",

abstract = "The GaLactic and Extragalactic All-sky MWA survey (GLEAM) is a new relatively low resolution, contiguous 72-231 MHz survey of the entire sky south of declination +25. In this paper, we outline one approach to determine the relative contribution of system noise, classical confusion and sidelobe confusion in GLEAM images. An understanding of the noise and confusion properties of GLEAM is essential if we are to fully exploit GLEAM data and improve the design of future low-frequency surveys. Our early results indicate that sidelobe confusion dominates over the entire frequency range, implying that enhancements in data processing have the potential to further reduce the noise.",

author = "T.M.O. Franzen and C.A. Jackson and J.R. Callingham and R.D. Ekers and P.J. Hancock and N. Hurley-Walker and J. Morgan and N. Seymour and R.B. Wayth and S.V. White and M.E. Bell and K.S. Dwarakanath and Bi-Qing For and B.M. Gaensler and L. Hindson and M. Johnston-Hollitt and Anna Kapinska and E. Lenc and B. Mckinley and A.R. Offringa and P. Procopio and Lister Staveley-Smith and Chen Wu and Q. Zheng",

year = "2015",

language = "English",

pages = "1--8",

booktitle = "Proceedings of Science",

publisher = "Scuola Internazionale Superiore di Studi Avanzati (SISSA)",

address = "Italy",

note = "The many facets of extragalactic radio surveys : towards new scientific challenges , EXTRA-RADSUR2015 ; Conference date: 20-10-2015 Through 23-10-2015",

url = "https://pos.sissa.it/267/",

}

Franzen, TMO, Jackson, CA, Callingham, JR, Ekers, RD, Hancock, PJ, Hurley-Walker, N, Morgan, J, Seymour, N, Wayth, RB, White, SV, Bell, ME, Dwarakanath, KS, For, B-Q, Gaensler, BM, Hindson, L, Johnston-Hollitt, M, Kapinska, A, Lenc, E, Mckinley, B, Offringa, AR, Procopio, P, Staveley-Smith, L, Wu, C & Zheng, Q 2015, Limits of noise and confusion in the MWA GLEAM year 1 survey. in Proceedings of Science. Scuola Internazionale Superiore di Studi Avanzati (SISSA), Trieste, Italy, pp. 1-8, The many facets of extragalactic radio surveys, Bologna, Italy, 20/10/15.

TY - GEN

T1 - Limits of noise and confusion in the MWA GLEAM year 1 survey

AU - Franzen, T.M.O.

AU - Jackson, C.A.

AU - Callingham, J.R.

AU - Ekers, R.D.

AU - Hancock, P.J.

AU - Hurley-Walker, N.

AU - Morgan, J.

AU - Seymour, N.

AU - Wayth, R.B.

AU - White, S.V.

AU - Bell, M.E.

AU - Dwarakanath, K.S.

AU - For, Bi-Qing

AU - Gaensler, B.M.

AU - Hindson, L.

AU - Johnston-Hollitt, M.

AU - Kapinska, Anna

AU - Lenc, E.

AU - Mckinley, B.

AU - Offringa, A.R.

AU - Procopio, P.

AU - Staveley-Smith, Lister

AU - Wu, Chen

AU - Zheng, Q.

N1 - Conference code: 123437

PY - 2015

Y1 - 2015

N2 - The GaLactic and Extragalactic All-sky MWA survey (GLEAM) is a new relatively low resolution, contiguous 72-231 MHz survey of the entire sky south of declination +25. In this paper, we outline one approach to determine the relative contribution of system noise, classical confusion and sidelobe confusion in GLEAM images. An understanding of the noise and confusion properties of GLEAM is essential if we are to fully exploit GLEAM data and improve the design of future low-frequency surveys. Our early results indicate that sidelobe confusion dominates over the entire frequency range, implying that enhancements in data processing have the potential to further reduce the noise.

AB - The GaLactic and Extragalactic All-sky MWA survey (GLEAM) is a new relatively low resolution, contiguous 72-231 MHz survey of the entire sky south of declination +25. In this paper, we outline one approach to determine the relative contribution of system noise, classical confusion and sidelobe confusion in GLEAM images. An understanding of the noise and confusion properties of GLEAM is essential if we are to fully exploit GLEAM data and improve the design of future low-frequency surveys. Our early results indicate that sidelobe confusion dominates over the entire frequency range, implying that enhancements in data processing have the potential to further reduce the noise.

M3 - Conference paper

SP - 1

EP - 8

BT - Proceedings of Science

PB - Scuola Internazionale Superiore di Studi Avanzati (SISSA)

CY - Trieste, Italy

T2 - The many facets of extragalactic radio surveys

Y2 - 20 October 2015 through 23 October 2015

ER -

Limits of noise and confusion in the MWA GLEAM year 1 survey

Abstract

Conference

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