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Найдено 218 документов по запросу «JDEM». [Перейти к поиску]


Дата загрузки: 2016-11-23
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0.08/5
... of a Joint Dark Energy Mission (JDEM). The ROF system illuminates the... An attitude control testbed for JDEM K. A. Reil, A. J. Roodman, SLAC National Accelerator..., jitter and PSF requirements for JDEM come from the weak lensing... the Joint Dark Energy Mission (JDEM). This mission will tightly constrain... 14 Optical performance budgeting for JDEM weak-lensing measurements M. C. Noecker, Ball...-DOE Joint Dark Energy Mission (JDEM). The measurements are challenging, because...-to-grave support of the JDEM program. Finally, we will briefly...) The Joint Dark Energy Mission (JDEM) will be using photodiodes as... of internal calibration light sources. JDEM requires space qualified Si and... the context of the SNAP / JDEM project, we present here a study... States) Many future missions, including JDEM, are designed as wide-field...



Дата загрузки: 2017-04-09
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0.21/5
...-time tools previously developed for JDEM. We further compare these four alternative WFIRST configurations to JDEM-Ω and to the European Space... Joint Dark Energy Mission (JDEM) family, in particular JDEM-Ω (Gehrels 2010). WFIRST... payload concepts with the original JDEM-Ω design on which the Decadal... in Table 3. Compared to the JDEM-Ω payload, the WFIRST configurations show... improved galaxy count compared to JDEM-Ω and Euclid. In particular note... than the 1.5m aperture of JDEM-Ω. A useful sample of spectroscopic redshifts... arcminute WF-A WF-B WF-C WF-D JDEM-Ω Euclid Euclid+ 5578 4067 4616... Results WF-A WF-B WF-C WF-D JDEM-Ω Euclid Euclid+ SNe followed per...., 2008; Cerna et al., 2010). JDEM-Ω baselined a slitless spectrometer channel responsible... the supernova spectroscopy requirement. In JDEM-Ω spectroscopy, the zodiacal background per... expected within the JDEM-Ω field for a given exposure. JDEM-Ω therefore does not..., dark energy mission planning (e.g. Euclid; JDEM) is usually based on observing... studied downlink options for SNAP/JDEM during 2008. In particular they... the Joint Dark Energy Mission JDEM-Ω concept considered by the Decadal... also compared these configurations to JDEM-Ω and to the European Space... 2.5 times the survey rate of JDEM-Ω, and an improved density of..., WFIRST-A surveys 2.8 times faster than JDEM-Ω and six times faster than..., N., “The Joint Dark Energy Mission (JDEM) Omega,” arXiv:1008.4936 (2010... accommodation study for WFIRST payloads,” JDEM Project Office Drawing No. 1029.... & Astroph. v.457, 841-856, (2006). JDEM Interim Science Working Group (ISWG... wheel into the WFIRST Imagers,” JDEM Project Office Drawing No. 1165-A (2011). Levi, M. “JDEM Mission Calculator” (JSIM) http://jdem.lbl.gov/public...



Дата загрузки: 2017-11-24
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0.12/5
... Energy Mission (JDEM) / Omega Submitted By: Neil Gehrels JDEM/Omega Project Scientist... to the astronomical community. The JDEM scientific objectives are: Cosmic Acceleration... >100 more than currently available. JDEM is a mission concept collaboratively developed... (~$1.2B FY09 total cost), called JDEM/Omega, while a companion response describes... version called JDEM/DECS (~$1.5B FY09 total cost). JDEM/DECS has CCD and HgCdTe instruments, while JDEM/Omega has a HgCdTe instrument covering.... To accomplish these surveys, the JDEM/Omega reference mission uses a 1.5 m telescope... ready for launch in 2017. 1 JDEM / Omega 1. SCIENCE 1. Describe the measurements... be achieved by your activity. JDEM/Omega performs a comprehensive survey of... spectroscopic redshift measurements will enable JDEM/Omega to probe dark energy... information are also necessary. The JDEM/Omega SNe measurement requirements are... each method. Technical Implementation Overview: JDEM/Omega utilizes a modestly cool (~243K... acceptable QE (>0.6) down to 0.4 m, allowing JDEM/Omega to make SNe-required... cold focal plane positioning considerations. JDEM/Omega is placed in a libration... including ground vs. space considera3 JDEM / Omega tions are briefly summarized... uniquely attainable in space give JDEM/Omega shape measurements the potential..., nor are they driving the JDEM/Omega requirements. 4. Present the performance... measurements. At the observatory level, JDEM/Omega utilizes a Korsch type on..." Experimental Astronomy v.11, June 2002. 1 6 JDEM / Omega what will the impact... parameters. In Table 1, we list JDEM/Omega performance parameters and describe... each one. 7 JDEM / Omega Figure 2 - Science requirements flow-down. JDEM/Omega has... to instrument parameters. Section 1 Science 8 JDEM / Omega Table 1 - Consequences of failing... benign L2 environment. Section 1 Science 9 JDEM / Omega 2. TECHNICAL IMPLEMENTATION Payload Instrumentation... instruments are used together. The JDEM/Omega payload configuration (see Figure... cutoff JWST HgCdTe detector material. JDEM requires no detector development. The... in the spacecraft section. 10 JDEM / Omega Figure 3 – Payload Block Diagram... SCAs) Section 2 Technical Implementation 11 JDEM / Omega The key drivers for... 1 in the Mission Design section. JDEM/Omega executes a field monitoring strategy... associated technology maturation plan. The JDEM/Omega design is optimized to..., technology implementation plans, etc). 12 JDEM / Omega Concept studies led by... leads to the conclusion that JDEM/Omega has stringent calibration requirements... large Table 2 - Instrument SLOC Estimate JDEM Instrument FSW Modules SLOC core... Fault Detection & Correction Instrument Management JDEM Instrument Estimate Assumptions: 19,600... LRO Heritage New for JDEM Instrument New for JDEM Instrument Instrument processor..., BEI linear encoder Existing Hardware JDEM / Omega 9 9 9 None Fabricate isolators 9 9 9 9 9 9 9 6 TRL... Rad750 Commercially available Existing Hardware JDEM / Omega None need to be... Space Qualification JDEM / Omega Table 4 - Instrument Table for the JDEM/Omega Instrument... Implementation 20 JDEM / Omega Table 5 - Instrument Table for the JDEM/Omega Telescope... 588 Section 2 Technical Implementation 21 JDEM / Omega Mission Design 1. Provide a brief... challenging. Section 2 Technical Implementation The JDEM/Omega design provides the flexibility... required during Phases B and C/D. 22 JDEM / Omega Mission software development encompasses... science algorithms provided by the JDEM science teams into a pipeline processing... simulator built around engi- 23 JDEM / Omega neering model hardware (called... place and operational well before JDEM/Omega launches. Science development will... Implementation 24 JDEM / Omega Figure 6 – JDEM/Omega Instrument Optical Layout Figure 7 – JDEM/Omega... Figure 8 – JDEM/Omega in the Launch Vehicle Fairing JDEM / Omega 26 JDEM / Omega... kg % kg Type kg % W % W 27 JDEM / Omega Spacecraft Implementation 1. Describe the... Configuration Section 2 Technical Implementation 30 JDEM / Omega Table 9 - Heritage and Technology Readiness of JDEM/Omega Spacecraft Subsystem Key Components... thermostats Section 2 Technical Implementation 31 JDEM / Omega Table 10 - Spacecraft Mass... be developed for mission success. JDEM/Omega benefits from significant development... dark current performance requirements for JDEM/Omega are less stringent than... to the levels required for JDEM, and JDEM will not set specifications... mosaic architectures are at TRL6. A JDEM/Omega Engineering DevelopSection 3 Enabling Technology... at TRL7. Initial results from JDEM detector characterization testing indicates these... associated with 34 JDEM / Omega scaling to the larger JDEM/Omega cryogenic... imaging Section 3 Enabling Technology 35 JDEM / Omega 4. MISSION OPERATIONS DEVELOPMENT 1. Provide... challenging constraints for operations as JDEM/Omega is a survey mission, with... the general scientific community. The JDEM science teams will be responsible... the detectors remaining from pre37 JDEM / Omega vious exposures, assembling individual...



Дата загрузки: 2017-04-09
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0.13/5
... risk and cost of the JDEM-Omega mission design, as submitted... Office opted to use the JDEM-Omega hardware configuration as an... previously identified (both on the JDEM SCG and during the New..., the cosmological community, through the JDEM Science Definition Team, the Dark... Task Force, and by the JDEM Figure of Merit Science Working... already developed as part of a JDEM Engineering Development Unit (EDU) Focal... the IDRM, a change from the JDEM-Omega baseline. Shifting the secondary... to 1.3m, from 1.5m on JDEM-Omega, while still providing equivalent... limiting flux as compared to JDEM-Omega. The unobscured telescope allows... incorporates minor modifications from the JDEM-Omega instrument. Two detectors from... 2.0 µm) for the Exoplanet survey. Finally, JDEM-Omega proposed using 2.5µm long-wavelength... EDU was started on the JDEM project and work continues Section... acceptable cost), the 35 WFIRST JDEM/WFIRST project initiated a detector demonstration... of demonstration parts that the JDEM/WFIRST project is building already... a Phase A start in FY13. The JDEM Omega RFI identified weak lensing... relatively few changes from the JDEM-Omega reference mission, and thus... system was begun for the JDEM Omega concept, and is now... within their budgeted tolerances. The JDEM-Omega studies found that it..., comprehensive trades. Results from the JDEM mission concept study teams can... directions near-simultaneously (as did JDEM-Omega). Both appear to be... WFIRST IDRM The NWNH took JDEM-Omega to be the template for WFIRST, saying that JDEM-Omega seemed nearly ideally suited... science goals. The SDT took JDEM-Omega as the starting point... is more expensive than for JDEM-Omega, it is less likely... same wavelength cutoffs as in JDEM-Omega. In the year between... ImC IMF IR IRAS JCL JDEM JWST KDP KSC L2 LCCE...



Дата загрузки: 2017-05-20
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0.18/5
... the Joint Dark Energy Mission (JDEM) Figure of Merit (FoM) Science Working Group (SWG), the FoMSWG. JDEM is a space mission planned by... a Working Group for a space-based JDEM, we will not discuss other... of the JDEM era, with details of these pre-JDEM “data models... this set of standardized pre-JDEM data models. Section V describes quantities... gauge the effectiveness of proposed JDEM investigations, and which can be... from the Fisher matrices of JDEM data models. Section VI presents... function in the era when JDEM has sensitivity to growth, taken... in SN measurements for pre-JDEM are conservative, in the sense... astrophysical knowledge are assumed before JDEM. For our WL Fisher matrix... include clusters in our pre-JDEM Fisher matrix, because we were... energy parameters in the “pre-JDEM” time frame. To be explict... a cosmological likelihood function available before JDEM is begins its first data..., more precisely, shear peaks. Any JDEM executing WL shear tomography would... to 11 109 h−3 Mpc3 [26]. A JDEM-class survey providing 100 million..., adding it to our pre-JDEM prior improves the DETF FoM... included in the FoMSWG pre-JDEM standard prior, since not all... note that ongoing studies of JDEM weak-lensing programs suggest that... constraint on ∆γ in the pre-JDEM era, depending on the level... the Fisher matrix for each JDEM technique individually, as well as... to understand. For our pre-JDEM data, 15–20 of the... in Eq. (21). Since the JDEM principal components will be determined even better than the pre-JDEM ones, we see that our... the true intrinsic power of JDEM to probe w(z). The remaining step... quantify how much JDEM improves upon the pre-JDEM errors. This can be done by plotting the ratio σi−2 (JDEM) , σi−2 (pre-JDEM) (22) where pre-JDEM errors (that we... Eq. (21) completely dominates σi2 (JDEM)). An example of a graph of the first principal components of a JDEM mission is shown in Fig... 2 shows the corresponding ratios σi−2 (JDEM)/σi−2 (pre-JDEM). To construct this figure, it... know the values of σi (pre-JDEM). They are given in Table... energy from a JDEM mission, normalized to the pre-JDEM knowledge. The data... not correspond to any proposed JDEM, but invented merely to illustrate... 0.905 0.929 0.955 TABLE I: Pre-JDEM values of σi for the first... the nominal launch date for JDEM will be sometime in 2016... describe the scientific reach of a JDEM. Our efforts have been directed... survey specifications. 2. Graph of σi−2 (JDEM)/σi−2 (pre-JDEM): This graph is an indication... accuracy as the result of a JDEM. Recall that the DETF parametrized... have large ratios of σi−2 (JDEM)/σi−2 (pre-JDEM). Existing computations of principal components... case, the graph of σ i−2 (JDEM)/σi−2 (pre-JDEM) allows one to make an... in larger values of σi−2 (JDEM)/σi−2 (pre-JDEM). Wild discrepancies would indicate the... models for pre-JDEM results indicate a value of σ(∆γ) = 0.21. A JDEM should result... z. APPENDIX A: PREDICTIONS FOR THE PRE-JDEM FISHER MATRICES 1. Planck Fisher Matrix... a 2σ change.7 On the timescale of JDEM, it is likely that B-mode... it with other information. 2. Pre-JDEM Weak Lensing Fisher Matrix The... will be available for pre-JDEM. We noted that for a ground... bκ rκ in the nonlinear regime. 3. Pre-JDEM Baryon Acoustic Oscillation Fisher Matrix... any level that would affect a JDEM choice. For convenience, we registered... in the FoMSWG pre-JDEM data model. 4. a. Pre-JDEM Supernova Fisher Matrix... available at the time of a JDEM launch, taken to be 2016... measure the incremental impact of a JDEM on knowledge of cosmological parameters... distance errors. The task for a JDEM proposer will be to describe... in the next 7 years (before JDEM). Therefore, we assume a conservative floor... significant principal components, the assumed JDEM sample was that used by the DETF. b. Assumptions about pre-JDEM SNe Surveys The early results... assumed in constructing the pre-JDEM data model. Looking ahead, we... 0.31 0.21 TABLE IV: Pre-JDEM expansion and growth history parameter... 500 objects into our pre-JDEM priors. We also assume that... 2016 (the beginning of the JDEM mission). Current methods for estimating... has been assigned. APPENDIX B: PRE-JDEM PERFORMANCE After constructing the Fisher... on the FoMSWG website http://jdem.gsfc.nasa.gov/FoMSWG. Brief... a C program to take the pre-JDEM Fisher matrices as input and... an imagined JDEM or for a different realization of a pre-JDEM Fisher matrix... package is available from the JDEM website as a gzipped tarball (named... B for Planck and the pre–JDEM BAO, SN and WL observations...



Дата загрузки: 2017-11-24
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0.09/5
... THE JOINT DARK ENERGY MISSION (JDEM) Neil Gehrels Goddard Space Flight... April 10, 2009 Executive Summary JDEM is a space-based observatory designed... energy in the Universe. The JDEM Science Coordination Group (SCG) was... mission in coordination with the JDEM Project Office. This report presents... (SNe) and weak lensing (WL). JDEM can accommodate these three techniques... a filter wheel that covers 0.4 - 1.0 µm. 4. The JDEM Reference Mission offers more than... order of magnitude or larger. 5. JDEM combines ground-breaking capabilities for... the 3 primary measurement technique that JDEM will employ plus summarize several... best established measurements in astrophysics. JDEM will dwarf previous galaxy redshift... measurements is another cross-check. JDEM enables a large advance over ground... sky with tight systematics control. JDEM can perform a redshift survey of... study of systematics. This allows a JDEM mission to be designed that... magnitude as a function of redshift. JDEM will measure the properties of... all events, regardless of redshift. JDEM enables a large advance over ground... rest-frame infrared, available to JDEM, has been found to yield... several aspects of general relativity. JDEM will detect WL by measuring... ~ 5% accuracy. At the launch of JDEM, we expect WL surveys will... ~ 2 %108 galaxies over ~ 5000 deg2. JDEM enables advances over ground-based... of galaxy shapes, so that JDEM can measure 1–2 % 109 galaxy shapes.... The photo-z reliabilities needed for JDEM-quality WL experiments require deep... wide-field spectroscopic capabilities on JDEM will make this possible by.... In some cases, the current JDEM Reference Mission will be able... most important measurement made by JDEM. Integrated Sachs Wolfe (ISW) Effect... with the nearly full sky JDEM galaxy redshift survey provides a measurement... energy, and constitutes an additional JDEM test of the nature of...-matter content of the clusters. JDEM can significantly enhance the power... necessary for reliable cluster photo-z's. JDEM is uniquely capable of deep wide-field NIR surveying. JDEM is also uniquely capable of... error of other methods. For JDEM to make a strong contribution to..., it is critical that the JDEM survey strategy be contiguous on.... This is strong incentive for JDEM to implement a filled-sky survey... bias of galaxies (Kaiser 1987). JDEM's large spectroscopic redshift survey for... distortions. IV. JDEM Scientific Requirements Appendix A gives the full JDEM requirements developed... ground observations must meet the JDEM specifications for data quality---in... link on public JDEM SCG web site (http://jdem.gsfc.nasa.gov... assumes 3 filters on JDEM and 2 filters on ground V. JDEM Design Notes The following are notes on the JDEM design based on discussions of the SCG. 1) JDEM benefits by enabling all 3 primary... cross-checks between the methods. 2) JDEM's purpose is to provide dark... of galaxies in the 0 < z < 4 range. JDEM will provide high-accuracy shape... its pointing and optical fluctuations. 6) JDEM will exploit the opportunity uniquely.... Description of Reference Mission The JDEM Project Office was tasked with... is missed. Ground System The JDEM Mission Operations Ground System (GS... is crucial to JDEM’s success. Although knowledge of the JDEM focal plane... impact the observing schedule of JDEM, these demands also naturally lead... calibration is so crucial to JDEM's success, we recommend a complete end... its benefits for the overall JDEM mission (including SN spectroscopy and... they will be improved by JDEM observations as follows: • CMB: we... (2009). • BAO: The FoMSWG pre-JDEM model assumes a 10,000 deg2... in the JDEM SN data. Table 4: Assumed data for JDEM Reference Observing.... Galaxy and AGN evolution: The JDEM slitless wide survey will detect... galaxies and AGN. The deep JDEM surveys will conduct a blind survey...: The space-based resolution of JDEM will enable resolved visible-NIR... cosmological parameters. Brown dwarfs: The JDEM deep NIR photometric survey will...-redshift AGN and galaxies: The JDEM NIR surveys will detect the... JWST. The Outer Solar System: JDEM could discover thousands of Solar... nuclei. Variability and transiting exoplanets: JDEM will make repeated observations of..., the photometric stability provided by JDEM could be sufficient to permit... latitude and NIR coverage of JDEM would complement ground-based transit... prototyped and space-qualified for JDEM by the LAM/Marseille group... several advantages for the overall JDEM mission: 6) An IFU spectrograph also... as the calibration system for JDEM broadband photometry, providing the transfer... time? The current set of JDEM instruments addresses some, but not... between z = 2 and 5 (0 ) = 2-4 "m in H") would supplement JDEM's capabilities for all of these... form of gravity. The present JDEM relies almost exclusively on weak... is a major objective of the JDEM mission (and most groundbased experiments... the techniques being considered for JDEM measures dark energy directly. Rather... space-based aperture, such as JDEM, to significantly exceed the sensitivity... the ecliptic pole, where the JDEM survey would be conducted. The...



Дата загрузки: 2017-05-20
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0.21/5
Status of JDEM HEPAP Meeting November 13, 2008 .../NASA Joint Dark Energy Mission (JDEM) Both the National Academy “Beyond... NASA should work together on JDEM. DOE, NASA and Office of... the plan for a mission. The JDEM website with our plan was... on September 12, 2008 Æ http://jdem.gsfc.nasa.gov Topics: Summer.../3/08. DOE and NASA signed a JDEM MOU on 11/7/08. Details will be available soon. JDEM DOE’s Starting Points DOE plans... ~ $200M in FY08$ to the JDEM project – construction + operations NASA should.../NASA Joint Dark Energy Mission (JDEM) Letters Exchanged between Ed Weiler... NASA agree to partner in a JDEM. • NASA will be the lead agency for JDEM, responsible for the success of the overall space mission. • JDEM will be a medium-class strategic... will be a central tenet of JDEM project management and mission design.../NASA Joint Dark Energy Mission (JDEM) Letters Exchanged between Ed Weiler... its contributions. • Public release of JDEM data will occur after an... point of contact for the JDEM project in negotiating and executing... signed a Memorandum of Understanding JDEM Project Offices A JDEM Project Office (PO) has..., and will interact closely with JDEM scientists during all phases of... lead the all DOE efforts. JDEM Figure of Merit Science Working... be optimum.” Charge to the JDEM SWG – produce findings: • Update or... October – presentations to AAAC and JDEM SCG http://www.nsf.gov... ~ end-November – final results available JDEM Science Coordination Group (SCG) Chair... at the web site: http://jdem.gsfc.nasa.gov/comments.html... requirements and instrumentation capabilities for a JDEM mission using the science performance...-conceptual design, provided by the JDEM Project Office using the BAO... coordination with the SCG, the JDEM PO will modify the initial... will be incorporated into the JDEM AO and the science teams... can propose to the AO JDEM AO Information A Letter to Community... was posted 11/3/08 to JDEM website. The notice was also...) science investigations using the relevant JDEM data set; b) DE Supernovae (SN) science investigations using the relevant JDEM data set; c) DE Weak Lensing...) science investigations using the relevant JDEM data set; d) DE science investigations... the relevant JDEM data set; e) Leader of the JDEM Science Working Group... science investigations using the relevant JDEM data set. It is anticipated... constitute the JDEM Science Working Group (SWG). The JDEM SWG will work with the NASA JDEM Project Office..., development, and operation of the JDEM observatory. All members of a selected... will have access to that JDEM data necessary for the execution of their proposed science investigation. JDEM AO Information cont. It is... energy science investigation using the JDEM Reference Mission pre-conceptual design...-based selection of the JDEM SWG, the JDEM design may evolve from... the methodology defined in the JDEM FoMSWG Report to document the... thereby quantify its science performance. JDEM data, including suitable calibration and... the Community for more details. JDEM MOU Ray Orbach and Ed... Science Mission Directorate) signed the JDEM MOU on 11/3/08 and... will be posted on the JDEM website. Note: Most of the... slides. Joint Dark Energy Mission (JDEM) DOE Æ DOE program manager (OHEP): Kathy Turner DOE JDEM project Manager: Michael Levi (LBNL... Salamon JDEM Program Executive: Ray Taylor JDEM Program Scientist: Richard Griffiths JDEM Project...: Kevin Grady, Acting Project Manager JDEM Timeline The agencies continue to... dark energy investigations using the JDEM facility. • A letter to the community... the next few months, the JDEM Project Offices at DOE and... collaborators will work with the JDEM Project Offices at both agencies...



Дата загрузки: 2017-11-08
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0.34/5
... NASA/DOE dark-energy mission (JDEM). It may well become an... (IDECS), but we will use JDEM as the shorthand in this... understanding of dark energy, the JDEM datasets have the potential to... an integral part of the JDEM design, these programs will offer... program within JDEM. As a bare minimum, we advocate that JDEM is structured... flexibility can be achieved with JDEM at little extra cost to... encourage NASA to ensure that JDEM, if selected for further development... The broad scientific potential of JDEM observations was highlighted in the..., General Astrophysics programs widen the JDEM constituency, opening direct participation to... the survey. Draft Page 3 4/1/09 JDEM has the power to address... rally to support of the JDEM project if they are convinced... their science. Unique JDEM Capabilities The full JDEM capabilities are still under... redshift measurements for 108 galaxies. JDEM will also conduct photometric monitoring... or JWST/NIRCam). By comparison, JDEM will provide a unique combination of... red, the imaging capabilities of JDEM will overlap with LSST and... the surveys cover comparable areas, JDEM is likely to have better angular resolution and higher stability. JDEM and LSST are likely to... the near-IR coverage of JDEM will allow it to probe... that are accessible to LSST. JDEM will include spectroscopy, which would... ground-based campaigns. In summary, JDEM will occupy a unique parameter space.... All of this suggests that JDEM will enable unique science well..., the scientific potential of any JDEM data set can be further... archival research. Science programs with JDEM We list examples of science... that can take advantage of JDEM observations. Some of these programs... be carried out using only JDEM survey data; others can profit...) trans-neptunian objects (TNOs), but JDEM can extend Draft Page 4 4/1/09... spectral features and extreme colours. JDEM spectroscopy and photometry could be... observations are extremely time-consuming. JDEM can make a major contribution to... program. Variability and transiting exoplanets: JDEM will make repeated observations of..., the photometric stability provided by JDEM could be sufficient to permit... transiting giant planets. Since the JDEM observations are concentrated at high... would be enhanced by a supplementary JDEM pointed program that would increase... photometry from JDEM with comparably deep optical photometry from JDEM or from... luminous objects in the universe. JDEM could provide vital synergy with... tracer (e.g. UV, H-alpha or infrared). A JDEM spectroscopic survey can provide Hα 8 luminosities... nuclear activity and galactic morphology. JDEM deep spectroscopic pointings will be... of redshift: Combining JDEM and LSST imaging with JDEM spectroscopy will enable.... Near-infrared photometric data from JDEM can greatly improve photometric redshift... 200 galaxy-scale lenses. The JDEM survey data could enable strong... of its better angular resolution, JDEM can measure image shape for...



Дата загрузки: 2017-05-20
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0.16/5
... a Joint Dark Energy (Space) Mission (JDEM). 2 Our recommendations are based on... statistical and systematic uncertainties. Because JDEM, LST, and SKA all offer... a Joint Dark Energy (Space) Mission (JDEM). 9. Just as dark-energy science.../NIR Joint Dark Energy Mission (JDEM) satellite, using one or more... the four techniques. c. an x-ray JDEM satellite, which would study dark... needed to execute LST and JDEM are largely in hand. (The... Stage IV projects considered (LST, JDEM, and SKA) offers compelling potential... is uncertain. b. An optical/NIR JDEM can mitigate systematic errors because... risk than an optical/NIR JDEM, but could in many respects match the power of JDEM if systematic errors, especially if... a Joint Dark Energy (Space) Mission (JDEM). There are four primary observational... statistical and systematic uncertainties. Because JDEM, LST, and SKA all offer... statistical and systematic uncertainties. Because JDEM, LST, and SKA all offer... a Joint Dark Energy (Space) Mission (JDEM). We use Fisher-matrix techniques... ways that are complementary to a JDEM SN survey, which would have... a space-based dark-energy experiment (JDEM): 1. A single space mission appears capable... for combining SN+WL on JDEM-class missions, with significant optically... DETF data models, but the JDEM Concept Studies will better explore the breadth achievable in a single JDEM mission. 2. The primary virtue of... would bring this to 17. 3. JDEM may be, in this sense... to ameliorate key systematic errors. 4. A JDEM with NIR capabilities could make... of methods to include on JDEM should be weighted toward those... a single mission within the expected JDEM budget. 50 6. In this regard... stands alone since the other JDEM approaches use widefield optical/NIR... statistical power. 7. While executing both JDEM and LST would certainly improve... both. 8. Most proposed forms of JDEM observatory would greatly expand our.... b. The Joint Dark Energy Mission (JDEM) is a DOE/NASA effort aimed... a supernova experiment carried out on JDEM. zmax zmin N_bin Continued: zmax... no IIIb 4000 0.5 1.4 9 yes IVS (JDEM) 10000 0.5 2 10 no IVG (SKA...-based Joint Dark Energy Mission (JDEM) and coordinated ground-based CMB... and optimization of LST and JDEM. The DETF is asked to... are required in preparation for JDEM, LST and other existing or...-based Joint Dark Energy Mission (JDEM) and coordinated ground-based CMB... and optimization of LST and JDEM. The DETF is asked to... are required in preparation for JDEM, LST and other existing or... – 11:00 Coffee and Conversation JDEM SDT Activities Committee Discussion C. Bennett... and Announcements Committee Discussion JDEM concept: DESTINY Break JDEM concept: JEDI R. Kolb J. Morse A. Crotts A. Albrecht Update on JDEM SDT... Reconvene in Room 9 South East JDEM concept: SNAP (videoconference) 1:40 – 1:50... CMB data obtained from the JDEM NASA - DOE Investigation Riess, Adam...-DOE Joint Dark Energy Mission (JDEM) Crotts, Arlin arlin@astro.columbia..., Saul saul@lbl.gov Pre-JDEM Dark Energy Studies with SNe..., Saul saul@lbl.gov SNAP/JDEM Overview Cordes, Jim cordes@astro...



Дата загрузки: 2016-12-24
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... errors go to +- .0012 Planck+JDEM+DUNE blind b-spline Ps(lnk... +- .07 Planck+JDEM+DUNE ςs=+- 1.001d2lnV/dψ2/4 @aeq ςs ~ 0.1 +.6 -.7 to +.6-.7 Planck+JDEM+DUNE LCDM to... errors go to +- .0012 Planck+JDEM+DUNE blind b-spline lnPs(lnk... +- .07 Planck+JDEM+DUNE ςs=+- 1.001d2lnV/dψ2/4 @aeq ςs ~ 0.1 +.6 -.7 to +.6-.7 Planck+JDEM+DUNE LCDM to... aeq Beyond Einstein panel: LISA+JDEM Forecast: JDEM-SN (2500 hi-z + 500.../BAO, Lyα Cosmic Probes Then JDEM-SN + DUNE-WL + Planck1 Zhiqi... gradient)2 to +-0.07 then Planck1+JDEM SN+DUNE WL, weak Saturday..., 2009 Beyond Einstein panel: LISA+JDEM Forecast: JDEM-SN (2500 hi-z + 500...