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| ESA SP-1323: ESA's Report to the 39th COSPAR Meeting |
The 39th meeting of the Committee on Space Research (COSPAR) was held 14-22 July 2012 in Mysore, India.
This report to COSPAR on the scientific activities of the European Space Agency was written by members of the Directorate of Earth Observation, the Directorate of Human Spaceflight and Operations and the Directorate of Science and Robotic Exploration.
Contents:
- Foreword by Jean-Jacques Dordain, Director General, ESA
- Earth Observation
- Introduction
- The Living Planet Programme
- The Earth Explorer Missions
- ERS and Envisat
- Human Spaceflight and Operations
- Introduction
- Overview: Columbus and ISS Facilities
- Funding Europe's ISS Research: ELIPS
- Research on the ISS
- Ongoing Research Using Other Platforms
- Projects under Development
- Science and Robotic Exploration
- Introduction
- Missions in Operation
- Missions in the Post-Operations and Archiving Phases
- Projects under Development
- Missions under Study
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| Publication date: 30 Jun 2012 |
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| James Webb Space Telescope Studies of Dark Energy |
| The Hubble Space Telescope (HST) has contributed significantly to studies of dark energy. It was used to find the first evidence of deceleration at z=1.8 (Riess et al. 2001) through the serendipitous discovery of a type 1a supernova (SNIa) in the Hubble Deep Field. The discovery of deceleration at z>1 was confirmation that the apparent acceleration at low redshift (Riess et al. 1998; Perlmutter et al. 1999)
was due to dark energy rather than observational or astrophysical effects such as systematic errors, evolution in the SNIa population or intergalactic dust. The GOODS project and associated follow-up discovered 21 SNIa, expanding on this result (Riess et al. 2007). HST has also been used to constrain cosmological parameters and dark energy through weak lensing measurements in the COSMOS survey (Massey et al 2007; Schrabback et al 2009) and strong gravitational lensing with measured time delays (Suyu et al 2010). |
| Publication date: 18 Mar 2010 |
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| Notching during random vibration test based on interface forces - The JWST NIRSpec experience |
| Force limited vibration was used during the sine and random qualification tests of the NIRSpec instrument, to limit stresses in the brittle structure while demonstrating adequate qualification with regard to the environmental flight conditions. First, NASA provided a force limit curve based on their internal 'Semi-Empirical Method'. Then, strain gages were mounted on the legs of the kinematic mounts to recover interface forces during the vibration test. Two different methods were then used to determine the notches: one called the 'Apparent Mass' method that is based on sine sweep signatures and another one based on direct force measurement in the time domain during random test. The second method resulted in the most effective notch determination, allowing the justification of the notches in real time with high accuracy. The resulting RMS forces are well below the forces corresponding to static design loads that is a more conventional method. |
| Publication date: 18 Mar 2010 |
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| JWST Planetary Observations within the Solar System |
| JWST provides capabilities unmatched by other telescopic facilities in the near to mid
infrared part of the electromagnetic spectrum. Its combination of broad wavelength
range, high sensitivity and near diffraction-limited imaging around two microns
wavelength make it a high value facility for a variety of Solar System targets. Beyond
Neptune, a class of cold, large bodies that include Pluto, Triton and Eris exhibits surface
deposits of nitrogen, methane, and other molecules that are poorly observed from the
ground, but for which JWST might provide spectral mapping at high sensitivity and
spatial resolution difficult to match with the current generation of ground-based
observatories. The observatory will also provide unique sensitivity in a variety of near
and mid infrared windows for observing relatively deep into the atmospheres of Uranus
and Neptune, searching there for minor species. It will examine the Jovian aurora in a
wavelength regime where the background atmosphere is dark. Special provision of a subarray
observing strategy may allow observation of Jupiter and Saturn over a larger
wavelength range despite their large surface brightnesses, allowing for detailed
observation of transient phenomena including large scale storms and impact-generation
disturbances. JWSTs observations of Saturns moon Titan will overlap with and go
beyond the 2017 end-of-mission for Cassini, providing an important extension to the
time-series of meteorological studies for much of northern hemisphere summer. It will
overlap with a number of other planetary missions to targets for which JWST can make
unique types of observations. JWST provides a platform for linking solar system and
extrasolar planet studies through its unique observational capabilities in both arenas. |
| Publication date: 09 Mar 2010 |
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| Planetary Systems and Star Formation with JWST |
| Submitted to 'Astro2010: The Astronomy and Astrophysics Decadal Survey', (http://sites.nationalacademies.org/bpa/BPA_049810), Science White Papers, no. 248 JWST will play a central role, along with other new capabilities such as Herschel,
ALMA, and large groundbased telescopes, in advancing our understanding of the four key questions: -
How do interstellar clouds of gas and dust begin their collapse into stars?
- What processes regulate the star formation following this collapse?
- How do planets form in dense disks of gas and dust around young stars?
- What is the subsequent evolution of planetary systems?
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| Publication date: 31 Dec 2009 |
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| Comparative Planetology: Transiting Exoplanet Science with JWST |
| The study of transiting exoplanets has provided most of the key data to date on the properties of exoplanets, such as direct estimates of their mass and radius (e.g.Charbonneau 2007), and spectral diagnostics of their atmospheres (e.g. Swain et al.
2008). The Hubble Space Telescope (HST) and Spitzer Space Telescope (SST) have both played lead roles in making the demanding, high S/N observations of light curves, and spectra of transiting exoplanets. Ground-based surveys have so far provided the candidate targets for space-based characterization studies. The study of transiting exoplanets requires the extraction of a differential signal from high S/N observations so
the James Webb Space Telescope (JWST), by virtue of its 25 m2 collecting area (~50x SST), will open up a new discovery space for transiting exoplanet science. Specifically, it
will enable the characterization of intermediate and low mass exoplanets. The goal of this white paper is to provide an informational briefing for the panel on the expected capabilities of JWST for observations of exoplanet transits, in particular the
characterization of transiting lower mass planets (d MNep). |
| Publication date: 15 Nov 2009 |
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| First Light and Reionization: open questions in the post-JWST era |
| The aim of this paper is to outline the expected JWST performance in addressing first
light and reionization science questions that are found to be of interest today. These are
some of the most challenging and interesting questions in modern astronomy, and are key
drivers for the design of the JWST. Nevertheless, because these early epochs are difficult
to observe, even JWST is unlikely to provide complete answers. |
| Publication date: 15 Nov 2009 |
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| JWST Study of Planetary Systems and Solar System Objects |
| Determination of the physical and chemical properties of planetary systems is the main
objective of the planetary systems and the origins of life scientific theme of the James
Webb Space Telescope (JWST). This white paper summarizes the missions capabilities
for direct detection and study of exoplanets and circumstellar material (>0.1" from parent
star), planets and other objects in our own Solar System, and corresponding scientific
advances expected from JWST in the next decade. |
| Publication date: 15 Nov 2009 |
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| Stellar Populations with JWST: the Beginning and the End |
| We discuss the recent progress on stellar populations provided by the influx of high
sensitivity infrared photometry measurements using the Spitzer SAGE survey of the
Large Magellanic Cloud as an example. We discuss the important role JWST will play in
expanding such studies out to the local volume of galaxies (~10 Mpc) and its synergy
with concurrent missions. In addition to observational capabilities, we will need
theoretical tools to further this field in the next decade. |
| Publication date: 15 Nov 2009 |
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| The Scientific Capabilities of the James Webb Space Telescope |
| The James Webb Space Telescope is a large (25 m2), cold (<50 K), infrared (IR)-optimized space observatory that will be launched
during 2013. It is the successor to the Hubble and Spitzer Space Telescopes. The observatory has four instruments: a near-IR camera, a near-IR multi-object spectrograph, and a tunable filter
imager will operate within the wavelength range, 0.6 < l < 5.0 microns, while the mid-IR instrument
will provide both imaging and spectroscopy over the
5.0 < l < 28.5 microns spectrum. |
| Publication date: 15 Nov 2009 |
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| Pupil Alignment Reference (PAR) for the Mid-Infrared Instrument (MIRI) for Optical Alignment and Verification on the Integrated Science Instrument Module (ISIM) in James Webb Space Telescope (JWST) |
| In "Optical System Alignment, Tolerancing, and Verification III", edited by José Sasian, Richard N. Youngworth, Proc. of SPIE Vol. 7433, 74330P, (2009), doi: 10.1117/12.826286
The Mid Infrared Instrument (MIRI), one of the four instruments on the Integrated Science Instrument Module (ISIM) of the James Webb Space Telescope (JWST), supports all of the science objectives of the observatory. MIRI optical alignment is an important step in the verification process, directly affecting mission success. The MIRI optical alignment is verified on the ground at the integrated ISIM level using an element in the MIRI Filter Wheel, the pupil alignment reference (PAR), developed by NASA GSFC and provided to MIRI. It is a ~2.3g aluminum piece that has a flat, specularly reflective, 3mm diameter surface in its center, with laser-etched fiducials within its aperture. The PAR is illuminated via an optical stimulus (ground support equipment) and imaged using a pupil imaging camera, during the ISIM test program in order to determine absolute and relative changes in the alignment that impact pupil shear and roll. Here we describe the MIRI PAR; its physical properties and challenges during its design, manufacturing, and testing. |
| Publication date: 28 Aug 2009 |
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| JWST near infrared detectors: latest test results |
| Infrared Systems and Photoelectronic Technology IV. Edited by Dereniak, Eustace L.; Hartke, John P.; Levan, Paul D.; Longshore, Randolph E.; Sood, Ashok K. Proceedings of the SPIE, Volume 7419, pp. 741907-741907-10 (2009)
The James Webb Space Telescope, an infrared-optimized space telescope being developed by NASA for launch in 2014, will utilize cutting-edge detector technology in its investigation of fundamental questions in astrophysics. JWST's near infrared spectrograph, NIRSpec utilizes two 2048 × 2048 HdCdTe arrays with Sidecar ASIC readout electronics developed by Teledyne to provide spectral coverage from 0.6 microns to 5 microns. We present recent test and calibration results for the "pathfinder NIRSpec detector subsystem" as well as data processing routines for noise reduction and cosmic ray rejection. |
| Publication date: 27 Aug 2009 |
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| Cryogenic Thermal Testing of the Verification Model Mid-Infrared Instrument (MIRI) Optics Module |
| Presented at the "International Conference On Environmental Systems", July 2009, Savannah, GA, USA, Session: Thermal Testing (Part 1 of 2), ID: 2009-01-2410
The Mid-Infrared Instrument (MIRI) is one of four scientific instruments on the James Webb Space Telescope (JWST) observatory, scheduled for launch in 2014. It will provide unique capabilities to probe the deeply dust-enshrouded regions of the Universe, investigating the history of star formation both near and far.
The MIRI is the coldest instrument on the observatory. Its thermal design is driven by requirements to cool an Optics Module (OM) to below 15.5 K and detectors within this to below 6.7 K with a stability of \ml10 mK over 1000 seconds. The OM is accommodated within the JWST Integrated Science Instrument Module (ISIM) which is cooled passively to between 32 and 40 K. The instrument temperatures are achieved by a combination of thermal isolation of the OM and the ISIM supplemented with active cooling of the OM by a dedicated cryo-cooler.
A flight representative "verification model" underwent two cryogenic thermal test campaigns at the UK's STFC Rutherford Appleton Laboratory between December 2007 and September 2008. This paper begins by summarizing the thermal design of the MIRI OM and describing the design of the cryogenic test facility. It goes on to describe the two test campaigns and the correlation of the MIRI OM thermal model to the thermal balance test measurements, concluding with the predicted in-flight thermal performance of the instrument based on this testing. |
| Publication date: 31 Jul 2009 |
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| Design and development of MIRI, the mid-IR instrument for JWST |
| In "Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter", edited by Jacobus M. Oschmann, Jr., Mattheus W. M. de Graauw, Howard A. MacEwen, Proc. of SPIE Vol. 7010, 70100T, (2008), doi: 10.1117/12.790101
MIRI is the mid-IR instrument for the James Webb Space Telescope and provides imaging, coronography and integral field spectroscopy over the 5-28 micron wavelength range. MIRI is the only instrument which is cooled to 7K by a dedicated cooler, much lower than the passively cooled 40K of the rest of JWST, which introduces unique challenges. The paper will describe the key features of the overall instrument design. The flight model design of the MIRI Optical System is completed, with hardware now in manufacture across Europe and the USA, while the MIRI Cooler System is at PDR level development. A brief description of how the different development stages of the optical and cooling systems are accommodated is provided, but the paper largely describes progress with the MIRI Optical System. We report the current status of the development and provide an overview of the results from the qualification and test programme. |
| Publication date: 12 Jul 2009 |
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| Solar System Observations with MIRI, The Mid InfraRed Instrument on the James Webb Space Telescope |
| MIRI is the Mid InfraRed Instrument for the James Webb Space Telescope (JWST) and will provide imaging, coronography and integral field spectroscopy in the range between 4.9 and 28.6 micron. We summarise solar system observations which may be possible with this instrument, drawing on examples of observations made with previous space missions such as IRAS, ISO and Spitzer. Presented at the conference "Future Ground Based Solar System Research, Isola d'Elba, 8-12 September 2008" |
| Publication date: 26 May 2009 |
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| Galaxies Across Cosmic Time with JWST |
| The James Webb Space Telescope (JWST; Gardner et al. 2006) will be a large, cold, infrared-
optimized space telescope designed to enable fundamental breakthroughs in our understanding of
the formation and evolution of galaxies, stars, and planetary systems (see Astro 2010 white papers
by Gardner et al., Stiavelli et al., Meixner et al., G. Rieke et al., & Sonneborn et al.). In the current
white paper, we describe the great potential of JWST in the theme of Galaxy Assembly. |
| Publication date: 13 Feb 2009 |
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| Molecular conductance of a contact-free labyrinth seal used for the contamination control of a cryogenic space instrument |
| This study presents the molecular conductance measurement of a labyrinth seal introduced for the Contamination Control Cover which is protecting the cryogenic optical surfaces of the mid-infrared instrument of the James Webb Space Telescope against molecular contaminants from the environment. The conductance has been measured in the molecular pressure regime between 10-7 and 10-3 mbar within a temperature range of 300 K and 10 K for several typical omponents of the expected residual gas such as H2O, NH3, CO2, H2, NO, alcohols and hydrocarbons as well as standard gases such as N2 and He. The measurements have been repeated with a thin orifice to verify the systematics. The results are well consistent with numerically derived values and demonstrate a robust understanding of the design and performance of the labyrinth seal. |
| Publication date: 15 Jan 2009 |
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| Status of the JWST/MIRI Focal Plane System and Cooler |
| AAS Meeting #213, #426.10
The Mid-Infrared Instrument (MIRI) is a multipurpose imager, coronagraph, and spectrometer for the James Webb Space Telescope. It provides wavelength coverage from 5 through 28 microns and is an integral contributor to all four of JWST's primary science themes. MIRI is being developed as a partnership between NASA and ESA, with JPL providing the Focal Plane System (FPS, consisting of the detectors, control electronics, and flight software) and the cooler, and a consortium of European astronomical institutes providing the optical bench and structure.
The flight FPS is being prepared for delivery to the European Consortium for its integration into the optical bench, while the cooler is nearing its Critical Design Review. We describe the capabilities of the FPS and cooler, present test results and the predicted sensitivity performance of the FPS, and update the current status of each these systems.
The research described in this poster was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. |
| Publication date: 15 Jan 2009 |
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| The Potential Of JWST Mid-infrared Instrument (MIRI) Followup Of The Spitzer Sage Survey Of The Large Magellanic Cloud |
| AAS Meeting #213, #426.12 The recycling of matter between the interstellar medium (ISM) and stars are key evolutionary drivers of a galaxy's baryonic matter. The Spitzer and JWST/MIRI wavelengths provide a sensitive probe of circumstellar and interstellar dust and hence, allow us to study the physical processes of the ISM, the formation of new stars and the injection of mass by evolved stars and their relationships on the galaxy-wide scale. We have performed a uniform and unbiased imaging survey of the Large Magellanic Cloud (LMC, 7x7 degrees), using the IRAC (3.6, 4.5, 5.8 and 8 microns) and MIPS (24, 70, and 160 microns) instruments on board the Spitzer Space Telescope (Spitzer) in order to survey the agents of a galaxy's evolution (SAGE): the ISM, young stellar objects (YSOs) and dusty evolved stars (Meixner et al. 2006). Initial results from SAGE have revealed >1000 new YSOs (Whitney et al. 2008), a detailed map of the dust and ISM mass (Bernard et al. 2008) and estimates of the dusty mass-loss return (Srinivsan et al., submitted) of the 30,000 dusty evolved stars (Blum et al. 2006). Here we describe how the powerful capabilities of the JWST MIRI can be used to followup these new discoveries of SAGE-LMC and also how SAGE-like studies can be extended to nearby galaxies.
The SAGE Project is supported by NASA/Spitzer grant 1275598 and MIRI science team work is supported by NASA NAG5-12595. |
| Publication date: 15 Jan 2009 |
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| Integral Field Spectroscopy of (U)LIRGs. From VLT to JWST |
| In the book "Science with the VLT in the ELT Era", Moorwood, Alan F.M. (Ed.), book series "Astrophysics and Space Science Proceedings", ISSN:1570-6591, doi:10.1007/978-1-4020-9190-2, part V, pp. 301-305
Some first results from the Integral Field Spectroscopy Survey of (U)LIRGs using VLT instruments VIMOS and SINFONI are presented. Detailed studies of the two-dimensional ionization structure and kinematics of the stars and different gas phases are within reach with IFS techniques on 8 m class telescopes. The perspectives of extending these studies to high-z galaxies with future IFS instruments (NIRSpec and MIRI) onboard JWST are considered. |
| Publication date: 21 Nov 2008 |
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