Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Sutinjo, A. T."'
Autor:
Price, Danny C., Tong, Cheuk-Yu Edward, Sutinjo, Adrian T., Patra, Nipanjana, Greenhill, Lincoln J.
Radiometer experiments to detect 21-cm Hydrogen line emission from the Cosmic Dawn and Epoch of Reionization rely upon precise absolute calibration. During calibration, noise generated by amplifiers within the radiometer receiver must be accounted fo
Externí odkaz:
http://arxiv.org/abs/2305.11479
Autor:
Sutinjo, Adrian T., Scott, Danica R., James, Clancy W., Glowacki, Marcin, Bannister, Keith W., Cho, Hyerin, Day, Cherie K., Deller, Adam T., Perrett, Timothy P., Shannon, Ryan M.
Studies of the time-domain structure of fast radio bursts (FRBs) require an accurate estimate of the FRB dispersion measure in order to recover the intrinsic burst shape. Furthermore, the exact DM is itself of interest when studying the time-evolutio
Externí odkaz:
http://arxiv.org/abs/2302.06220
Measuring Noise Parameters Using an Open, Short, Load, and 1/8-wavelength Cable as Source Impedances
Autor:
Price, Danny C., Tong, Cheuk-Yu Edward, Sutinjo, Adrian T., Greenhill, Lincoln J., Patra, Nipanjana
Noise parameters are a set of four measurable quantities which determine the noise performance of a radio-frequency device under test. The noise parameters of a 2-port device can be extracted by connecting a set of 4 or more source impedances at the
Externí odkaz:
http://arxiv.org/abs/2210.07080
Publikováno v:
A&A 660, A134 (2022)
This paper extends the treatment of system equivalent flux density (SEFD) in Sutinjo, A. T. et al. (2021) (Paper I) to interferometric phased array telescopes. The objective is to develop an SEFD formula involving only the most fundamental assumption
Externí odkaz:
http://arxiv.org/abs/2201.13035
Publikováno v:
A&A 664, A102 (2022)
We present the system equivalent flux density (SEFD) expressions for all four Stokes parameters: I, Q, U, V. The expressions were derived based on our derivation of SEFD I (for Stokes I) and subsequent extensions of that work to phased array and mult
Externí odkaz:
http://arxiv.org/abs/2205.15579
System equivalent flux density (SEFD) is an important figure of merit of a radio telescope. This paper aims to derive a general expression for SEFD of a polarimetric tripole interferometer. The derivation makes only two basic and reasonable assumptio
Externí odkaz:
http://arxiv.org/abs/2112.07147
Autor:
Sutinjo, A. T., Sokolowski, M., Kovaleva, M., Ung, D. C. X., Broderick, J. W., Wayth, R. B., Davidson, D. B., Tingay, S. J.
Publikováno v:
A&A 646, A143 (2021)
Aims: This paper aims to derive an expression for the sensitivity of a polarimetric radio interferometer that is valid for all-sky observations of arbitrarily polarized sources, with neither a restriction on FoV nor with any a priori assumption regar
Externí odkaz:
http://arxiv.org/abs/2012.08075
Autor:
Sutinjo, Adrian T., McKinley, Benjamin, Belostotski, Leonid, Ung, Daniel C. X., Thekkeppattu, Jishnu N.
We present design equations for a two-element closely-spaced interferometer for measuring the noise temperature of a uniform sky. Such an interferometer is useful for observing highly diffuse radio sources such as the Milky Way and Cosmological signa
Externí odkaz:
http://arxiv.org/abs/2009.04643
This paper presents a framework to compute the receiver noise temperature (Trcv) of two low-frequency radio telescopes, the Murchison Widefield Array (MWA) and the Engineering Development Array (EDA). The MWA was selected because it is the only opera
Externí odkaz:
http://arxiv.org/abs/2003.05116
Autor:
Sokolowski, M., Colegate, T., Sutinjo, A. T., Ung, D., Wayth, R. B., Hurley-Walker, N., Lenc, E., Pindor, B., Morgan, J., Kaplan, D. L., Bell, M. E., Callingham, J. R., Dwarakanath, K. S., For, Bi-Qing, Gaensler, B. M., Hancock, P. J., Hindson, L., Johnston-Hollitt, M., Kapińska, A. D., McKinley, B., Offringa, A. R., Procopio, P., Staveley-Smith, L., Wu, C., Zheng, Q.
The Murchison Widefield Array (MWA), located in Western Australia, is one of the low-frequency precursors of the international Square Kilometre Array (SKA) project. In addition to pursuing its own ambitious science program, it is also a testbed for w
Externí odkaz:
http://arxiv.org/abs/1710.07478