arXiv: Instrumentation and Methods for Astrophysics最新文献

{"title":"Image Processing in Python with Montage","authors":"J. Good, G. Berriman","doi":"10.5281/ZENODO.3379236","DOIUrl":"https://doi.org/10.5281/ZENODO.3379236","url":null,"abstract":"he Montage image mosaic engine has found wide applicability in astronomy re- search, integration into processing environments, and is an examplar application for the development of advanced cyber-infrastructure. It is written in C to provide performance and portability. Linking C/C++ libraries to the Python kernel at run time as binary ex- tensions allows them to run under Python at compiled speeds and enables users to take advantage of all the functionality in Python. We have built Python binary extensions of the 59 ANSI-C modules that make up version 5 of the Montage toolkit. This has in- volved a turning the code into a C library, with driver code fully separated to reproduce the calling sequence of the command-line tools; and then adding Python and C linkage code with the Cython library, which acts as a bridge between general C libraries and the Python interface. We will demonstrate how to use these Python binary extensions to perform im- age processing, including reprojecting and resampling images, rectifying background emission to a common level, creation of image mosaics that preserve the calibration and astrometric fidelity of the input images, creating visualizations with an adaptive stretch algorithm, processing HEALPix images, and analyzing and managing image metadata.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82555464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ESA's Voyage 2050 Long-term Plan for Education and Public Engagement: White Paper","authors":"P. Russo, Lukasz Alwast, L. Christensen, E. V. Dishoeck, Urban Eriksson, E. Gomez, J. R. González, A. Heward, Mairéad Hurley, Veronika Liebl, Ana Noronha, A. Ortiz-Gil, J. Pomierny, S. Pompea, S. Sandrelli, O. Sandu, S. Ings","doi":"10.5281/ZENODO.3359892","DOIUrl":"https://doi.org/10.5281/ZENODO.3359892","url":null,"abstract":"This white paper responds to the Voyage 2050 Call for White Papers from the Science Programme of the European Space Agency (ESA) and argues that education, communication and public engagement (hereafter EPE) should have priority in the Voyage 2050 planning cycle. The ESA Science's Voyage 2050 missions promise insights into the big existential questions of our era: the prevalence of life in the Universe; the nature of space and time; and the intertwined nature of matter, energy and gravity. It is likely that innovations in the acquisition, handling and processing of vast data sets will drive these themes to scientific maturity in the next decades. They offer us a timely opportunity to underline the relevance of space sciences to everyday life and thinking. More generally, space science is maturing to the point where it contributes to every major aspect of our cultural discourse. Citizens need information, resources and opportunities to actively participate in that discourse, and ESA Science can provide these. This white paper is a modest attempt to support ESA Science improve its engagement with society. It focuses on issues and topics to improve ESA Science's Education and Public Engagement activities. It does not dwell on the topics that ESA already excels at; hence this White Paper provides a critical review of what should and could be improved. We believe ESA's Voyage 2050 programme teams have a responsibility to represent Europe's social and cultural diversity, and our suggestions are conceived in that spirit: to support ESA Science's complex task of engaging a hugely diverse audience in the complex issues of planning, building and operating fascinating space missions.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74770176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CMB-S4 Decadal Survey APC White Paper","authors":"K. Abazajian, G. Addison, P. Adshead, Z. Ahmed, S. Allen, D. Alonso, M. Alvarez, M. Amin, A. Anderson, K. Arnold, C. Baccigalupi, K. Bailey, D. Barkats, D. Barron, P. Barry, J. Bartlett, R. Thakur, N. Battaglia, E. Baxter, R. Bean, C. Bebek, A. Bender, B. Benson, E. Berger, Sanah Bhimani, C. Bischoff, L. Bleem, J. Bock, S. Bocquet, K. Boddy, M. Bonato, J. Bond, J. Borrill, F. Bouchet, Michael L. Brown, S. Bryan, B. Burkhart, V. Buza, K. Byrum, E. Calabrese, Victoria Calafut, R. Caldwell, J. Carlstrom, J. Carron, T. Cecil, A. Challinor, C. Chang, Y. Chinone, Hsiao-mei Cho., A. Cooray, T. Crawford, A. Crites, A. Cukierman, F. Cyr-Racine, T. Haan, G. Zotti, J. Delabrouille, M. Demarteau, M. Devlin, E. D. Valentino, M. Dobbs, S. Duff, A. Duivenvoorden, C. Dvorkin, W. Edwards, J. Eimer, J. Errard, T. Essinger-Hileman, G. Fabbian, C. Feng, S. Ferraro, J. Filippini, R. Flauger, B. Flaugher, A. Fraisse, A. Frolov, N. Galitzki, S. Galli, K. Ganga, M. Gerbino, M. Gilchriese, V. Gluscevic, D. Green, D. Grin, E. Groh","doi":"10.2172/1556957","DOIUrl":"https://doi.org/10.2172/1556957","url":null,"abstract":"We provide an overview of the science case, instrument configuration and project plan for the next-generation ground-based cosmic microwave background experiment CMB-S4, for consideration by the 2020 Decadal Survey.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82481976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Packed Ultra-wideband Mapping Array (PUMA): A Radio Telescope for Cosmology and Transients","authors":"A. Slosar, Tzu-Ching Chang, Z. Ahmed, A. Stebbins, C. Sheehy, P. Bull, Evan J. Arena, J. Shaw, M. White, W. Tyndall, Adrian Liu, N. Sehgal, D. Alonso, R. Davé, D. Parkinson, C. Ng, P. O'Connor, A. Nomerotski, J. Prochaska, E. Silverstein, D. Rapetti, C. Dvorkin, E. Schaan, R. Ansari, R. Flauger, L. Knox, P. Meerburg, B. Saliwanchik, S. Foreman, H. Padmanabhan, T. McClintock, K. Bandura, R. Shirley, Dionysios Karagiannis, S. Ferraro, M. Johnson, A. Kaurov, A. V. Engelen, N. Battaglia, M. Amin, G. Tucker, M. Münchmeyer, D. Jacobs, P. Stankus, Daniel Green, A. Obuljen, K. Masui, L. Newburgh, K. Moodley, J. Blazek, E. Castorina, E. Sheldon, F. Villaescusa-Navarro, Yian Ma, P. Timbie, J. Frisch, J. Dillon, B. Wallisch, G. Holder, M. Loverde, T. Slatyer, L. Connor, S. Rajendran","doi":"10.2172/1558437","DOIUrl":"https://doi.org/10.2172/1558437","url":null,"abstract":"PUMA is a proposal for an ultra-wideband, low-resolution and transit interferometric radio telescope operating at $200-1100,mathrm{MHz}$. Its design is driven by six science goals which span three science themes: the physics of dark energy (measuring the expansion history and growth of the universe up to $z=6$), the physics of inflation (constraining primordial non-Gaussianity and primordial features) and the transient radio sky (detecting one million fast radio bursts and following up SKA-discovered pulsars). We propose two array configurations composed of hexagonally close-packed 6m dish arrangements with 50% fill factor. The initial 5,000 element 'petite array' is scientifically compelling, and can act as a demonstrator and a stepping stone to the full 32,000 element 'full array'. Viewed as a 21cm intensity mapping telescope, the program has the noise equivalent of a traditional spectroscopic galaxy survey comprised of 0.6 and 2.5 billion galaxies at a comoving wavenumber of $k=0.5,hmathrm{Mpc}^{-1}$ spanning the redshift range $z = 0.3 - 6$ for the petite and full configurations, respectively. At redshifts beyond $z=2$, the 21cm technique is a uniquely powerful way of mapping the universe, while the low-redshift range will allow for numerous cross-correlations with existing and upcoming surveys. This program is enabled by the development of ultra-wideband radio feeds, cost-effective dish construction methods, commodity radio-frequency electronics driven by the telecommunication industry and the emergence of sufficient computing power to facilitate real-time signal processing that exploits the full potential of massive radio arrays. The project has an estimated construction cost of 55 and 330 million FY19 USD for the petite and full array configurations. Including R&D, design, operations and science analysis, the cost rises to 125 and 600 million FY19 USD, respectively.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78872364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research and Development for HI Intensity Mapping","authors":"Z. Ahmed, D. Alonso, M. Amin, R. Ansari, Evan J. Arena, K. Bandura, A. Beardsley, P. Bull, E. Castorina, Tzu-Ching Chang, R. Dav'e, J. Dillon, A. V. Engelen, A. Ewall-Wice, S. Ferraro, S. Foreman, J. Frisch, D. Green, G. Holder, D. Jacobs, Dionysios Karagiannis, A. Kaurov, L. Knox, E. Kuhn, Adrian Liu, Yin-Zhe Ma, K. Masui, T. McClintock, K. Moodley, M. Munchmeyer, L. Newburgh, A. Nomerotski, P. O'Connor, A. Obuljen, H. Padmanabhan, D. Parkinson, O. Perdereau, D. Rapetti, B. Saliwanchik, N. Sehgal, J. Shaw, C. Sheehy, E. Sheldon, R. Shirley, E. Silverstein, T. Slatyer, A. Slosar, P. Stankus, A. Stebbins, P. Timbie, G. Tucker, W. Tyndall, F. Villaescusa-Navarro, D. Wulf","doi":"10.2172/1558438","DOIUrl":"https://doi.org/10.2172/1558438","url":null,"abstract":"Development of the hardware, data analysis, and simulation techniques for large compact radio arrays dedicated to mapping the 21 cm line of neutral hydrogen gas has proven to be more difficult than imagined twenty years ago when such telescopes were first proposed. Despite tremendous technical and methodological advances, there are several outstanding questions on how to optimally calibrate and analyze such data. On the positive side, it has become clear that the outstanding issues are purely technical in nature and can be solved with sufficient development activity. Such activity will enable science across redshifts, from early galaxy evolution in the pre-reionization era to dark energy evolution at low redshift.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77512732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Astro2020 APC White Paper: The MegaMapper: a z > 2 Spectroscopic Instrument for the Study of Inflation and Dark Energy","authors":"D. Schlegel, J. Kollmeier, G. Aldering, S. Bailey, C. Baltay, C. Bebek, S. BenZvi, R. Besuner, G. Blanc, A. Bolton, Mohamed Bouri, D. Brooks, E. Buckley-Geer, Z. Cai, J. Crane, A. Dey, P. Doel, Xiaohui Fan, S. Ferraro, A. Font-Ribera, G. Gutiérrez, J. Guy, H. Heetderks, D. Huterer, L. Infante, P. Jelinsky, M. Johns, Dionysios Karagiannis, S. Kent, A. Kim, J. Kneib, L. Kronig, N. Konidaris, O. Lahav, M. Lampton, D. Lang, A. Leauthaud, M. Liguori, E. Linder, C. Magneville, P. Martini, M. Mateo, P. Mcdonald, C. Miller, J. Moustakas, A. Myers, J. Mulchaey, J. Newman, P. Nugent, N. Palanque-Delabrouille, N. Padmanabhan, A. Piro, C. Poppett, J. Prochaska, A. Pullen, D. Rabinowitz, S. Ramírez, H. Rix, A. Ross, L. Samushia, E. Schaan, M. Schubnell, U. Seljak, H. Seo, S. Shectman, J. Silber, J. Simon, Z. Slepian, M. Soares-Santos, G. Tarlé, I. Thompson, M. Valluri, R. Wechsler, M. White, Michael J. Wilson, C. Yéche, D. Zaritsky","doi":"10.2172/1568868","DOIUrl":"https://doi.org/10.2172/1568868","url":null,"abstract":"Author(s): Schlegel, David J; Kollmeier, Juna A; Aldering, Greg; Bailey, Stephen; Baltay, Charles; Bebek, Christopher; BenZvi, Segev; Besuner, Robert; Blanc, Guillermo; Bolton, Adam S; Bouri, Mohamed; Brooks, David; Buckley-Geer, Elizabeth; Cai, Zheng; Crane, Jeffrey; Dey, Arjun; Doel, Peter; Fan, Xiaohui; Ferraro, Simone; Font-Ribera, Andreu; Gutierrez, Gaston; Guy, Julien; Heetderks, Henry; Huterer, Dragan; Infante, Leopoldo; Jelinsky, Patrick; Johns, Matthew; Karagiannis, Dionysios; Kent, Stephen M; Kim, Alex G; Kneib, Jean-Paul; Kronig, Luzius; Konidaris, Nick; Lahav, Ofer; Lampton, Michael L; Lang, Dustin; Leauthaud, Alexie; Liguori, Michele; Linder, Eric V; Magneville, Christophe; Martini, Paul; Mateo, Mario; McDonald, Patrick; Miller, Christopher J; Moustakas, John; Myers, Adam D; Mulchaey, John; Newman, Jeffrey A; Nugent, Peter E; Palanque-Delabrouille, Nathalie; Padmanabhan, Nikhil; Piro, Anthony L; Poppett, Claire; Prochaska, Jason X; Pullen, Anthony R; Rabinowitz, David; Ramirez, Solange; Rix, Hans-Walter; Ross, Ashley J; Samushia, Lado; Schaan, Emmanuel; Schubnell, Michael; Seljak, Uros; Seo, Hee-Jong; Shectman, Stephen A; Silber, Joseph; Simon, Joshua D; Slepian, Zachary; Soares-Santos, Marcelle; Tarle, Greg; Thompson, Ian; Valluri, Monica; Wechsler, Risa H; White, Martin; Wilson, Michael J; Yeche, Christophe; Zaritsky, Dennis | Abstract: MegaMapper is a proposed ground-based experiment to measure Inflation parameters and Dark Energy from galaxy redshifts at 2","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90095908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined Emerging Capabilities for Near-Earth Objects (NEOs)","authors":"S. Milam, H. Hammel, J. Bauer, M. Brozović, T. Grav, B. Holler, C. Lisse, A. Mainzer, V. Reddy, M. Schwamb, T. Spahr, C. Thomas, D. Woods","doi":"10.3847/25C2CFEB.572BAF8B","DOIUrl":"https://doi.org/10.3847/25C2CFEB.572BAF8B","url":null,"abstract":"Assess the joint capabilities of emerging telescopes for near-Earth objects (NEOs) survey and characterization, and what they will add to the current capabilities or replace. NASA telescopes in prime mission, in development, or under study, and requested for this assessment, include: - The Transiting Exoplanet Survey Satellite (TESS) - The James Webb Space Telescope (JWST) - The Wide Field Infrared Survey Telescope (WFIRST) - The Near-Earth Object Camera (NEOCam). Also requested for this assessment is the Large Synoptic Survey Telescope (LSST), an 8.4-meter ground-based telescope in development by the National Science Foundation and Department of Energy (DOE), with the capability to discover and catalogue NEOs.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75125818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Maunakea Spectroscopic Explorer","authors":"J. Marshall, J. Bullock, A. Burgasser, K. Chambers, D. Depoy, A. Dey, N. Flagey, Alexis Hill, L. Hillenbrand, D. Huber, Ting Li, S. Juneau, M. Kaplinghat, M. Mateo, A. McConnachie, J. Newman, A. Petric, D. Schlegel, A. Sheinis, Yue Shen, D. Simons, M. Strauss, K. Szeto, K. Tran, C. Yéche, the Galex Science Team","doi":"10.2172/1568876","DOIUrl":"https://doi.org/10.2172/1568876","url":null,"abstract":"The Maunakea Spectroscopic Explorer is a next-generation massively multiplexed spectroscopic facility currently under development in Hawaii. It is completely dedicated to large-scale spectroscopic surveys and will enable transformative science. In this white paper we summarize the science case and describe the current state of the project.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83507765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SpecTel: A 10-12 meter class Spectroscopic Survey Telescope","authors":"R. Ellis, K. Dawson, J. Bland-Hawthorn, R. Bacon, A. Bolton, M. Bremer, J. Brinchmann, K. Bundy, C. Conroy, B. Delabre, A. Dey, A. Drlica-Wagner, J. Greene, L. Guzzo, Jennifer A. Johnson, A. Leauthaud, K. Lee, L. Pasquini, L. Pentericci, J. Richard, H. Rix, C. Rockosi, D. Schlegel, A. Slosar, M. Strauss, M. Takada, E. Tolstoy, D. Watson","doi":"10.2172/1568878","DOIUrl":"https://doi.org/10.2172/1568878","url":null,"abstract":"We recommend a conceptual design study for a spectroscopic facility in the southern hemisphere comprising a large diameter telescope, fiber system, and spectrographs collectively optimized for massively-multiplexed spectroscopy. As a baseline, we propose an 11.4-meter aperture, optical spectroscopic survey telescope with a five square degree field of view. Using current technologies, the facility could be equipped with 15,000 robotically-controlled fibers feeding spectrographs over 360<lambda<1330 nm with options for fiber-fed spectrographs at high resolution and a panoramic IFU at a separate focus. This would enable transformational progress via its ability to access a larger fraction of objects from Gaia, LSST, Euclid, and WFIRST than any currently funded or planned spectroscopic facility. An ESO-sponsored study (arXiv:1701.01976) discussed the scientific potential in ambitious new spectroscopic surveys in Galactic astronomy, extragalactic astronomy, and cosmology. The US community should establish links with European and other international communities to plan for such a powerful facility and maximize the potential of large aperture multi-object spectroscopy given the considerable investment in deep imaging surveys.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76486663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Space-based All-sky MeV γ-ray Survey with the Electron Tracking Compton Camera","authors":"K. Hamaguchi, T. Tanimori, A. Takada, J. Beacom, S. Gunji, M. Mori, T. Nakamori, C. Shrader, David M. Smith, T. Tamagawa, B. Tsurutani","doi":"10.13016/M2EOJ3-0MYG","DOIUrl":"https://doi.org/10.13016/M2EOJ3-0MYG","url":null,"abstract":"A sensitive survey of the MeV gamma-ray sky is needed to understand important astrophysical problems such as gamma-ray bursts in the early universe, progenitors of Type Ia supernovae, and the nature of dark matter. However, the study has not progressed remarkably since the limited survey by COMPTEL onboard CGRO in the 1990s. Tanimori et al. have developed a Compton camera that tracks the trajectory of each recoil electron in addition to the information obtained by the conventional Compton cameras, leading to superior imaging. This Electron Tracking Compton Camera (ETCC) facilitates accurate reconstruction of the incoming direction of each MeV photon from a wide sky at ~degree angular resolution and with minimized particle background using trajectory information. The latest ETCC model, SMILE-2+, made successful astronomical observations during a day balloon flight in 2018 April and detected diffuse continuum and 511 keV annihilation line emission from the Galactic Center region at a high significance in ~2.5 hours. We believe that MeV observations from space with upgraded ETCCs will dramatically improve our knowledge of the MeV universe. We advocate for a space-based all-sky survey mission with multiple ETCCs onboard and detail its expected benefits.","PeriodicalId":8459,"journal":{"name":"arXiv: Instrumentation and Methods for Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78140369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}