Overview of the Origins Space telescope: science drivers to observatory requirements

Meixner, Margaret; Armus, L.; Battersby, Cara; Bauer, J. M.; Bergin, Edwin A.; Cooray, Asantha; Fortney, Jonathan J.; Kataria, Tiffany; Leisawitz, David; Milam, Stefanie N.; Pontoppidan, K. M.; Pope, Alexandra; Sandström, Karin; Staguhn, Johannes; Stevenson, Kevin B.; Su, Kate; Bradford, C. M.; Benford, Dominic J.; Burgarella, D.; Carey, Sean; Carter, Ruth C.; Beck, E. De; DiPirro, Michael; Ennico-Smith, Kimberly; Gérin, M.; Helmich, Frank; Kaltenegger, Lisa; Mamajek, Eric E.; Melnick, Gary; Moseley, S. H.; Narayanan, Desika; Neff, Susan G.; Padgett, Deborah; Roellig, Thomas L.; Sakon, Itsuki; Scott, Douglas; Sheth, Kartik; Vieira, J. D.; Wiedner, Martina C.; Wright, E. L.; Žmuidzinas, J.

doi:10.1117/12.2312255

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The exoplanet science that is possible to do with WFIRST-CGI is described in several papers (e.g., [201,202]). OST: The Origin Space Telescope (OST, launch foreseen in 2035) is a mission studied to be the follow up of JWST [203,204]. The current baseline is a space telescope with a large aperture (segmented off-axis design with a diameter of ∼9 m) carrying up to five instrument [205][206][207][208][209]: (i) Far-infrared imager and polarimeter (FIP) is a broad band imager able to use two wavebands in parallel at a time, over large angular areas ; (ii) the Mid-infrared Imager, Spectrometer and Coronagraph (MISC), which operates between 5 and 28 µm, has an ultra-stable spectrometer channel built to do exoplanet transits with high precision; (iii) the OST Survey Spectrometer (OSS) can survey the sky over its whole wavelength range of 25 and 590 µm with low resolution spectroscopy with R ∼ 300; (iv) the Heterodyne Receiver for OST (HERO)uses an array of 9 coherent detectors over the wavelength range of 111 to 617 µm to achieve the highest spectral resolutions of R ∼ 10 6 − 10 7 for measurements of simultaneous spectral lines.…”

Section: Platomentioning

confidence: 99%

Biosignatures Search in Habitable Planets

Claudi

Alei

2019

Galaxies

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The search for life has had a new enthusiastic restart in the last two decades thanks to the large number of new worlds discovered. The about 4100 exoplanets found so far, show a large diversity of planets, from hot giants to rocky planets orbiting small and cold stars. Most of them are very different from those of the Solar System and one of the striking case is that of the super-Earths, rocky planets with masses ranging between 1 and 10 M ⊕ with dimensions up to twice those of Earth. In the right environment, these planets could be the cradle of alien life that could modify the chemical composition of their atmospheres. So, the search for life signatures requires as the first step the knowledge of planet atmospheres, the main objective of future exoplanetary space explorations. Indeed, the quest for the determination of the chemical composition of those planetary atmospheres rises also more general interest than that given by the mere directory of the atmospheric compounds. It opens out to the more general speculation on what such detection might tell us about the presence of life on those planets. As, for now, we have only one example of life in the universe, we are bound to study terrestrial organisms to assess possibilities of life on other planets and guide our search for possible extinct or extant life on other planetary bodies. In this review, we try to answer the three questions that also in this special search, mark the beginning of every research: what? where? how?

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Section: Platomentioning

confidence: 99%

Biosignatures Search in Habitable Planets

Claudi

Alei

2019

Galaxies

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“…The OST is one of the four NASA-funded studies for a large space mission to be submitted to the 2020 Decadal Review survey. The top three science questions for OST [71] are listed as follows: How common are life bearing planets around dwarf stars? What is the trail of water from the ISM to habitable planets?…”

Section: Origins Space Telescopementioning

confidence: 99%

A Proposed Heterodyne Receiver for the Origins Space Telescope

Wiedner

Mehdi

Baryshev

et al. 2018

IEEE Trans. THz Sci. Technol.

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The HEterodyne Receiver for the Origins Space Telescope (HERO) is a proposed design for a heterodyne focal plane array for a large space mission. The Origins Space Telescope (OST) is one of the four missions selected to be studied by NASA for the 2020 Astronomy and Astrophysics Decadal survey. HERO is designed to observe the trail of water from the interstellar medium (ISM) to disks around protostars. In Concept 1, HERO provides continuous frequency coverage from 468 to 2700 GHz in

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“…The far-IR is particularly compelling for a space mission because of the very low natural backgrounds across a full decade in wavelength from 25 to 300 µm. A cryogenically-cooled telescope in this band offers large potential scientific gains for a range of astrophysical applications from planet formation to galaxy evolution [15][16][17][18] , particularly via moderate-resolution (λ /δ λ ≈ 100 − 500) spectroscopy 19 . However, fully capitalizing on the low-background platform requires sensitivity matching the detector sensitivity to the photon shot noise in the narrow band -this results in a target noise equivalent power (NEP) of 0.1 aW/Hz 1/2 or lower.…”

Section: Introductionmentioning

confidence: 99%

High-sensitivity transition-edge-sensed bolometers: Improved speed and characterization with AC and DC bias

Foote,

Audley,

Bradford

et al. 2023

Journal of Applied Physics

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We report on efforts to improve the speed of low-G far-infrared transition-edged-sensed bolometers. We use a fabrication process that does not require any dry etch steps to reduce heat capacity on the suspended device and measure a reduction in the detector time constant. However, we also measure an increase in the temperature-normalized thermal conductance (G) and a corresponding increase in the noise-equivalent power (NEP). We employ a new near-IR photon-noise technique using a near-IR laser to calibrate the frequency-domain multiplexed AC system and compare the results to a well-understood DC circuit. We measure an NEP white noise level of 0.8 aW/rtHz with a 1/f knee below 0.1 Hz and a time constant of 3.2 ms.

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Overview of the Origins Space telescope: science drivers to observatory requirements

Abstract: The Origins Space Telescope (OST) mission concept study is the subject of one of the

Cited by 5 publications

References 11 publications

Biosignatures Search in Habitable Planets

Biosignatures Search in Habitable Planets

A Proposed Heterodyne Receiver for the Origins Space Telescope

High-sensitivity transition-edge-sensed bolometers: Improved speed and characterization with AC and DC bias

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