TiEMPO

TiEMPO: Open-source time-dependent end-To-end model for simulating ground-based submillimeter astronomical observations

Huijten, Esmee (ETH Zürich; Student TU Delft)
Roelvink, Yannick (Student TU Delft)
Brackenhoff, Stefanie A. (Rijksuniversiteit Groningen; Student TU Delft)
Zaalberg, S.L. (TU Delft Dreamhal)
Doing, Anne Kee (Student TU Delft)
Baselmans, J.J.A. (TU Delft Tera-Hertz Sensing; SRON Netherlands Institute for Space Research)
Karatsu, K. (TU Delft Tera-Hertz Sensing; SRON Netherlands Institute for Space Research)
Pascual Laguna, A. (TU Delft Tera-Hertz Sensing; SRON Netherlands Institute for Space Research)
van Hoven, M.B. (TU Delft Statistics)
Endo, A. (TU Delft Tera-Hertz Sensing)

Dreamhal

2022

The next technological breakthrough in millimeter–submillimeter astronomy is three-dimensional imaging spectrometry with wide instantaneous spectral bandwidths and wide fields of view. The total optimization of the focal-plane instrument, the telescope, the observing strategy, and the signal-processing software must enable efficient removal of foreground emission from the Earth’s atmosphere, which is time-dependent and highly nonlinear in frequency. Here, we present Time-dependent End-to-end Model for Post-process Optimization (TiEMPO) of the DEep Spectroscopic HIgh-redshift MApper (DESHIMA) spectrometer. TiEMPO utilizes a dynamical model of the atmosphere and parameterized models of the astronomical source, the telescope, the instrument, and the detector. The output of TiEMPO is a time stream of sky brightness temperature and detected power, which can be analyzed by standard signal-processing software. We first compare TiEMPO simulations with an on-sky measurement by the wideband DESHIMA spectrometer, and find good agreement in the noise and sensitivity. We then use TiEMPO to simulate the detection of the line emission spectrum of a high-redshift galaxy using the DESHIMA 2.0 spectrometer in development. The TiEMPO model is open source. Its modular and parametrized design enables users to adapt it to optimize the end-to-end performance of spectroscopic and photometric instruments on existing and future telescopes

astronomy
atmosphere
kinetic inductance detectors
millimeter-wave
on-chip spectrometers
simulations
submillimeter-wave

http://resolver.tudelft.nl/uuid:444f2203-3e62-42f1-bf22-0cfad857d846

https://doi.org/10.1117/1.JATIS.8.2.028005

2329-4124

Journal of Astronomical Telescopes, Instruments, and Systems, 8 (2)

Institutional Repository

journal article

© 2022 Esmee Huijten, Yannick Roelvink, Stefanie A. Brackenhoff, S.L. Zaalberg, Anne Kee Doing, J.J.A. Baselmans, K. Karatsu, A. Pascual Laguna, M.B. van Hoven, A. Endo, More Authors