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- Diego, J. M., et al.
(author)
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JWST's PEARLS : A new lens model for ACT-CL J0102-4915, "El Gordo," and the first red supergiant star at cosmological distances discovered by JWST
- 2023
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 672
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Journal article (peer-reviewed)abstract
- The first James Webb Space Telescope (JWST) data on the massive colliding cluster El Gordo allow for 23 known families of multiply lensed images to be confirmed and for eight new members of these families to be identified. Based on these families, which have been confirmed spectroscopically by MUSE, we derived an initial lens model. This model guided the identification of 37 additional families of multiply lensed galaxies, among which 28 are entirely new systems, and nine were previously known. The initial lens model determined geometric redshifts for the 37 new systems. The geometric redshifts agree reasonably well with spectroscopic or photometric redshifts when those are available. The geometric redshifts enable two additional models that include all 60 families of multiply lensed galaxies spanning a redshift range 2 z z > 0.8 and has an estimated virial mass close the maximum mass allowed by standard cosmological models. The JWST images also reveal the presence of small-mass perturbers that produce small lensing distortions. The smallest of these is consistent with being a dwarf galaxy at z = 0.87 and has an estimated mass of 3.8 x 10(9) M-circle dot, making it the smallest substructure found at z > 0.5. The JWST images also show several candidate caustic-crossing events. One of them is detected at high significance at the expected position of the critical curve and is likely a red supergiant star at z = 2.1878. This would be the first red supergiant found at cosmological distances. The cluster lensing should magnify background objects at z > 6, making more of them visible than in blank fields of a similar size, but there appears to be a deficiency of such objects.
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- Larsson, Andreas, et al.
(author)
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Collaborative Healthcare Innovation in Sweden
- 2012
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In: Sustainable Innovation. - New York : Springer. - 9781461420767 - 9781461420774 ; , s. 49-62
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Book chapter (peer-reviewed)abstract
- Abstract in UndeterminedThe medical technology (medtech) industry in Sweden is situated withina complex innovation ecosystem, in which various stakeholders from the public,private and academic sectors need to collaborate to meet demands on effective andeffi cient healthcare. Demographics are changing and those in need of healthcare arenot only larger in numbers than ever but they are also more knowledgeable anddemanding. Increasing innovative performance is crucial in both the private andpublic healthcare sectors, but bold steps forward need to be taken in light of stricterrules and regulations for how healthcare stakeholders should manage both theirinternal processes and the ways in which they interact with other stakeholders in thelarger innovation system. The traditional way in which medtech companies gainaccess to user needs, primarily working through a sales–purchasing relationshipwith the public healthcare sector, is outdated and needs to be replaced with anincreasingly collaborative and cocreative model of healthcare innovation.This chapter describes experiences and lessons learned from InnoPlant, a 3-year(2008–2011) action learning project involving three companies from the Swedishmedtech industry, two county/regional councils responsible for public healthcare,and four academic institutions—carried out within the framework of the SwedishProduct Innovation Engineering program (PIEp). The purpose of the project was toadvance the capability of stakeholders from the public, private, and academic sectorsto collaborate in the cocreation of healthcare innovations.
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