TiEMPO
| Autor: | Jochem J. A. Baselmans, Kenichi Karatsu, Stan Zaalberg, Akira Endo, Tom J. L. C. Bakx, Stefanie A. Brackenhoff, Yannick Roelvink, Kah Wuy Chin, Tatsuya Takekoshi, Yoichi Tamura, Alejandro Pascual Laguna, Akio Taniguchi, Maarten van Hoven, Robert Huiting, Kaushal B. Marthi, Esmee Huijten, Stephen J. C. Yates |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Noise power
FOS: Physical sciences Millimeter-wave 02 engineering and technology Astrophysics::Cosmology and Extragalactic Astrophysics Kinetic Inductance Detectors 7. Clean energy Spectrometer 030218 nuclear medicine & medical imaging law.invention Telescope 03 medical and health sciences 020210 optoelectronics & photonics 0302 clinical medicine Sky brightness law 0202 electrical engineering electronic engineering information engineering Emission spectrum Wideband Instrumentation and Methods for Astrophysics (astro-ph.IM) Astrophysics::Galaxy Astrophysics Remote sensing Physics Detector Astrophysics::Instrumentation and Methods for Astrophysics Spectral density Astrophysics - Astrophysics of Galaxies Astronomical Instrumentation Submillimeter-wave Astrophysics of Galaxies (astro-ph.GA) DESHIMA Astrophysics - Instrumentation and Methods for Astrophysics Simulation |
| Zdroj: | Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X |
| ISSN: | 0277-786X |
| Popis: | The next technological breakthrough in millimeter-submillimeter astronomy is 3D 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 TiEMPO: Time-Dependent End-to-End Model for Post-process Optimization of the DESHIMA Spectrometer. TiEMPO utilizes a dynamical model of the atmosphere and parametrized 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 power spectral density and sensitivity. We then use TiEMPO to simulate the detection of a 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 design and optimize the end-to-end performance of spectroscopic and photometric instruments on existing and future telescopes. Presented at SPIE Astronomical Telescopes + Instrumentation 2020. Full published paper, poster and video available at https://doi.org/10.1117/12.2561014 Open-source Python package of TiEMPO: https://pypi.org/project/tiempo-deshima/ Open-source code of TiEMPO: https://zenodo.org/record/4279086#.X_jAsdhKg2w |
| Databáze: | OpenAIRE |
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