Publication

Realistic simulations of the Galactic polarized foreground: consequences for 21-cm reionization detection experiments

Jelic, V., Zaroubi, S., Labropoulos, P., Bernardi, G., de Bruyn, A. G. & Koopmans, L. V. E., 21-Dec-2010, In : Monthly Notices of the Royal Astronomical Society. 409, 4, p. 1647-1659 13 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Jelic, V., Zaroubi, S., Labropoulos, P., Bernardi, G., de Bruyn, A. G., & Koopmans, L. V. E. (2010). Realistic simulations of the Galactic polarized foreground: consequences for 21-cm reionization detection experiments. Monthly Notices of the Royal Astronomical Society, 409(4), 1647-1659. https://doi.org/10.1111/j.1365-2966.2010.17407.x

Author

Jelic, Vibor ; Zaroubi, Saleem ; Labropoulos, Panagiotis ; Bernardi, Gianni ; de Bruyn, A. G. ; Koopmans, Leon V. E. / Realistic simulations of the Galactic polarized foreground : consequences for 21-cm reionization detection experiments. In: Monthly Notices of the Royal Astronomical Society. 2010 ; Vol. 409, No. 4. pp. 1647-1659.

Harvard

Jelic, V, Zaroubi, S, Labropoulos, P, Bernardi, G, de Bruyn, AG & Koopmans, LVE 2010, 'Realistic simulations of the Galactic polarized foreground: consequences for 21-cm reionization detection experiments', Monthly Notices of the Royal Astronomical Society, vol. 409, no. 4, pp. 1647-1659. https://doi.org/10.1111/j.1365-2966.2010.17407.x

Standard

Realistic simulations of the Galactic polarized foreground : consequences for 21-cm reionization detection experiments. / Jelic, Vibor; Zaroubi, Saleem; Labropoulos, Panagiotis; Bernardi, Gianni; de Bruyn, A. G.; Koopmans, Leon V. E.

In: Monthly Notices of the Royal Astronomical Society, Vol. 409, No. 4, 21.12.2010, p. 1647-1659.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Jelic V, Zaroubi S, Labropoulos P, Bernardi G, de Bruyn AG, Koopmans LVE. Realistic simulations of the Galactic polarized foreground: consequences for 21-cm reionization detection experiments. Monthly Notices of the Royal Astronomical Society. 2010 Dec 21;409(4):1647-1659. https://doi.org/10.1111/j.1365-2966.2010.17407.x


BibTeX

@article{556fbe32a7144f72b52556d2c714aa54,
title = "Realistic simulations of the Galactic polarized foreground: consequences for 21-cm reionization detection experiments",
abstract = "Experiments designed to measure the redshifted 21-cm line from the epoch of reionization (EoR) are challenged by strong astrophysical foreground contamination, ionospheric distortions, complex instrumental response and other different types of noise (e.g. radio frequency interference). The astrophysical foregrounds are dominated by diffuse synchrotron emission from our Galaxy. Here we present a simulation of the Galactic emission used as a foreground module for the Low Frequency Array (LOFAR)-EoR key science project end-to-end simulations. The simulation produces total and polarized intensity over 10 degrees x 10 degrees maps of the Galactic synchrotron and free-free emission, including all observed characteristics of the emission: spatial fluctuations of amplitude and spectral index of the synchrotron emission, together with Faraday rotation effects. The importance of these simulations arises from the fact that the Galactic polarized emission could behave in a manner similar to the EoR signal along the frequency direction. As a consequence, an improper instrumental calibration will give rise to leakages of the polarized to the total signal and mask the desired EoR signal. In this paper, we address this for the first time through realistic simulations.",
keywords = "polarization, radiation mechanisms: non-thermal, instrumentation: interferometers, cosmology: observations, radio continuum: general, PROBE WMAP OBSERVATIONS, INTERGALACTIC MEDIUM, SYNCHROTRON EMISSION, RADIO-EMISSION, SPECTRAL INDEX, IONIZED-GAS, GAMMA-RAYS, MILKY-WAY, 150 MHZ, EPOCH",
author = "Vibor Jelic and Saleem Zaroubi and Panagiotis Labropoulos and Gianni Bernardi and {de Bruyn}, {A. G.} and Koopmans, {Leon V. E.}",
year = "2010",
month = dec,
day = "21",
doi = "10.1111/j.1365-2966.2010.17407.x",
language = "English",
volume = "409",
pages = "1647--1659",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - Realistic simulations of the Galactic polarized foreground

T2 - consequences for 21-cm reionization detection experiments

AU - Jelic, Vibor

AU - Zaroubi, Saleem

AU - Labropoulos, Panagiotis

AU - Bernardi, Gianni

AU - de Bruyn, A. G.

AU - Koopmans, Leon V. E.

PY - 2010/12/21

Y1 - 2010/12/21

N2 - Experiments designed to measure the redshifted 21-cm line from the epoch of reionization (EoR) are challenged by strong astrophysical foreground contamination, ionospheric distortions, complex instrumental response and other different types of noise (e.g. radio frequency interference). The astrophysical foregrounds are dominated by diffuse synchrotron emission from our Galaxy. Here we present a simulation of the Galactic emission used as a foreground module for the Low Frequency Array (LOFAR)-EoR key science project end-to-end simulations. The simulation produces total and polarized intensity over 10 degrees x 10 degrees maps of the Galactic synchrotron and free-free emission, including all observed characteristics of the emission: spatial fluctuations of amplitude and spectral index of the synchrotron emission, together with Faraday rotation effects. The importance of these simulations arises from the fact that the Galactic polarized emission could behave in a manner similar to the EoR signal along the frequency direction. As a consequence, an improper instrumental calibration will give rise to leakages of the polarized to the total signal and mask the desired EoR signal. In this paper, we address this for the first time through realistic simulations.

AB - Experiments designed to measure the redshifted 21-cm line from the epoch of reionization (EoR) are challenged by strong astrophysical foreground contamination, ionospheric distortions, complex instrumental response and other different types of noise (e.g. radio frequency interference). The astrophysical foregrounds are dominated by diffuse synchrotron emission from our Galaxy. Here we present a simulation of the Galactic emission used as a foreground module for the Low Frequency Array (LOFAR)-EoR key science project end-to-end simulations. The simulation produces total and polarized intensity over 10 degrees x 10 degrees maps of the Galactic synchrotron and free-free emission, including all observed characteristics of the emission: spatial fluctuations of amplitude and spectral index of the synchrotron emission, together with Faraday rotation effects. The importance of these simulations arises from the fact that the Galactic polarized emission could behave in a manner similar to the EoR signal along the frequency direction. As a consequence, an improper instrumental calibration will give rise to leakages of the polarized to the total signal and mask the desired EoR signal. In this paper, we address this for the first time through realistic simulations.

KW - polarization

KW - radiation mechanisms: non-thermal

KW - instrumentation: interferometers

KW - cosmology: observations

KW - radio continuum: general

KW - PROBE WMAP OBSERVATIONS

KW - INTERGALACTIC MEDIUM

KW - SYNCHROTRON EMISSION

KW - RADIO-EMISSION

KW - SPECTRAL INDEX

KW - IONIZED-GAS

KW - GAMMA-RAYS

KW - MILKY-WAY

KW - 150 MHZ

KW - EPOCH

UR - http://adsabs.harvard.edu/abs/2010MNRAS.409.1647J

U2 - 10.1111/j.1365-2966.2010.17407.x

DO - 10.1111/j.1365-2966.2010.17407.x

M3 - Article

VL - 409

SP - 1647

EP - 1659

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -

ID: 5221471