Mr. Juan Mena Parra Profile

Juan Mena Parra

Researcher at McGill Univ

SPIE Involvement:

Author

Publications (3)

Proceedings Article | 18 August 2016 Paper

Holographic beam mapping of the CHIME pathfinder array

Philippe Berger, Laura Newburgh, Mandana Amiri, Kevin Bandura, Jean-François Cliche, Liam Connor, Meiling Deng, Nolan Denman, Matt Dobbs, Mateus Fandino, Adam Gilbert, Deborah Good, Mark Halpern, David Hanna, Adam Hincks, Gary Hinshaw, Carolin Höfer, Andre Johnson, Tom Landecker, Kiyoshi Masui, Juan Mena Parra, Niels Oppermann, Ue-Li Pen, Jeffrey Peterson, Andre Recnik, Timothy Robishaw, J. Richard Shaw, Seth Siegel, Kris Sigurdson, Kendrick Smith, Emilie Storer, Ian Tretyakov, Kwinten Van Gassen, Keith Vanderlinde, Donald Wiebe

Proceedings Volume 9906, 99060D (2016) https://doi.org/10.1117/12.2233782

KEYWORDS: Holography, Telescopes, Antennas, Optical correlators, Polarization, Beam shaping, Visibility, Optical simulations, Hydrogen, Device simulation

Read Abstract +

Proceedings Article | 8 August 2016 Paper

HIRAX: a probe of dark energy and radio transients

L. Newburgh, K. Bandura, M. Bucher, T.-C. Chang, H. Chiang, J.F. Cliche, R. Davé, M. Dobbs, C. Clarkson, K. 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. Parra, J. Peterson, O. Recnik, B. Saliwanchik, M. Santos, J. Sievers, O. Smirnov, P. Stronkhorst, R. Taylor, K. Vanderlinde, G. Van Vuuren, A. Weltman, A. Witzemann

Proceedings Volume 9906, 99065X (2016) https://doi.org/10.1117/12.2234286

KEYWORDS: Baryon acoustic oscillations, Hydrogen, Interferometers, Galactic astronomy, Optical correlators, Antennas, Calibration, Prototyping, Physics, Astronomy

Read 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.

Proceedings Article | 22 July 2014 Paper

Canadian Hydrogen Intensity Mapping Experiment (CHIME) pathfinder

Kevin Bandura, Graeme Addison, Mandana Amiri, J. Richard Bond, Duncan Campbell-Wilson, Liam Connor, Jean-François Cliche, Greg Davis, Meiling Deng, Nolan Denman, Matt Dobbs, Mateus Fandino, Kenneth Gibbs, Adam Gilbert, Mark Halpern, David Hanna, Adam Hincks, Gary Hinshaw, Carolin Höfer, Peter Klages, Tom Landecker, Kiyoshi Masui, Juan Mena Parra, Laura Newburgh, Ue-li Pen, Jeffrey Peterson, Andre Recnik, J. Richard Shaw, Kris Sigurdson, Mike Sitwell, Graeme Smecher, Rick Smegal, Keith Vanderlinde, Don Wiebe

Proceedings Volume 9145, 914522 (2014) https://doi.org/10.1117/12.2054950

KEYWORDS: Field programmable gate arrays, Baryon acoustic oscillations, Analog electronics, Polarization, Telescopes, Hydrogen, Optical correlators, Data acquisition, Clocks, Connectors

Read Abstract +

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years