| 1. |
- Algaba, Juan-Carlos, et al.
(författare)
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Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign
- 2021
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Ingår i: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8213 .- 2041-8205. ; 911:1
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Forskningsöversikt (refereegranskat)abstract
- In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting supermassive black hole of mass ∼6.5 × 109 M o˙. The EHTC also partnered with several international facilities in space and on the ground, to arrange an extensive, quasi-simultaneous multi-wavelength campaign. This Letter presents the results and analysis of this campaign, as well as the multi-wavelength data as a legacy data repository. We captured M87 in a historically low state, and the core flux dominates over HST-1 at high energies, making it possible to combine core flux constraints with the more spatially precise very long baseline interferometry data. We present the most complete simultaneous multi-wavelength spectrum of the active nucleus to date, and discuss the complexity and caveats of combining data from different spatial scales into one broadband spectrum. We apply two heuristic, isotropic leptonic single-zone models to provide insight into the basic source properties, but conclude that a structured jet is necessary to explain M87's spectrum. We can exclude that the simultaneous γ-ray emission is produced via inverse Compton emission in the same region producing the EHT mm-band emission, and further conclude that the γ-rays can only be produced in the inner jets (inward of HST-1) if there are strongly particle-dominated regions. Direct synchrotron emission from accelerated protons and secondaries cannot yet be excluded.
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| 2. |
- Hudson, Lawrence N, et al.
(författare)
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The database of the PREDICTS (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems) project
- 2017
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Ingår i: Ecology and Evolution. - : John Wiley & Sons. - 2045-7758. ; 7:1, s. 145-188
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Tidskriftsartikel (refereegranskat)abstract
- The PREDICTS project-Projecting Responses of Ecological Diversity In Changing Terrestrial Systems (www.predicts.org.uk)-has collated from published studies a large, reasonably representative database of comparable samples of biodiversity from multiple sites that differ in the nature or intensity of human impacts relating to land use. We have used this evidence base to develop global and regional statistical models of how local biodiversity responds to these measures. We describe and make freely available this 2016 release of the database, containing more than 3.2 million records sampled at over 26,000 locations and representing over 47,000 species. We outline how the database can help in answering a range of questions in ecology and conservation biology. To our knowledge, this is the largest and most geographically and taxonomically representative database of spatial comparisons of biodiversity that has been collated to date; it will be useful to researchers and international efforts wishing to model and understand the global status of biodiversity.
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| 3. |
- Cohen, Scott A., et al.
(författare)
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Finding effective pathways to sustainable mobility : bridging the science-policy gap
- 2016
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Ingår i: Journal of Sustainable Tourism. - : Informa UK Limited. - 0966-9582 .- 1747-7646. ; 24:3 Special issue, s. 317-334
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Tidskriftsartikel (refereegranskat)abstract
- This overview paper examines three areas crucial to understanding why, despite clear scientific evidence for the growing environmental impacts of tourism transport, there is large-scale inertia in structural transitions and a lack of political will to enact meaningful sustainable mobility policies. These include the importance of addressing socio-technical factors, barriers posed by “technology myths” and the need to overcome “transport taboos” in policy-making. The paper seeks pathways to sustainable mobility by bridging the science–policy gap between academic research and researchers, and policy-makers and practitioners. It introduces key papers presented at the Freiburg 2014 workshop, covering the case for researcher engagement using advocacy and participatory approaches, the role of universities in creating their own social mobility policies, the power of social mechanisms encouraging long-haul travel, issues in consumer responsibility development, industry self-regulation and the operation of realpolitik decision-making and implementation inside formal and informal destination-based mobility partnerships. Overall, the paper argues that governments and the tourism and transport industries must take a more cautious approach to the technological optimism that fosters policy inertia, and that policy-makers must take a more open approach to implementing sustainable transport policies. A research agenda for desirable transport futures is suggested.
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| 4. |
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| 5. |
- Higham, James, et al.
(författare)
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Psychological and behavioural approaches to understanding and governing sustainable mobility
- 2013
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Ingår i: Journal of Sustainable Tourism. - : Informa UK Limited. - 0966-9582 .- 1747-7646. ; 21:7, s. 949-967
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Tidskriftsartikel (refereegranskat)abstract
- This paper introduces and explores the psychological and social factors that both contribute to and inhibit behaviour change vis-a-vis sustainable (tourist) mobility. It is based on papers presented at the Freiburg 2012 workshop. Specifically, it reviews climate change attitudes and perceptions, the psychological benefits of tourism mobilities, addictive elements of mobility and social norming effects, the attitude-behaviour gap (i.e. cognitive dissonance between understandings of, and responses to, climate change), the psychology of modal shifts, the psychology of travel speed/time and psychological explanations for the perceived importance of long distance travel. It notes that anthropogenic climate change is an inescapable reality and that tourism's share of greenhouse gas emissions appears set to rise substantially. There is little prospect of technical solutions adequately addressing this problem. The paper concludes that, while a comprehensive understanding of tourist psychology is necessary to inform policy-makers, it alone will be insufficient to achieve emission reductions, and bring tourism to a climatically sustainable pathway, if treated in isolation. Radical change in the structures of provision is also necessary. That change may take the form of infrastructure planning, including financial and economic infrastructure (e. g. taxation regimes and emission trading schemes) for sustainable mobility.
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| 6. |
- Rodgers, Paul, et al.
(författare)
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The Lancaster Care Charter
- 2019
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Ingår i: Design Issues. - : MIT Press - Journals. - 0747-9360 .- 1531-4790. ; 35:1, s. 73-77
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- In the fall of 1991 the Munich Design Charter was published in Design Issues. This charter was written as a design-led “call to arms” on the future nations and boundaries of Europe. The signatories of the Munich Design Charter saw the problem of Europe, at that time, as fundamentally a problem of form that should draw on the creativity and expertise of design. Likewise, the Does Design Care…? workshop held at Imagination, Lancaster University in the autumn of 2017 brought together a multidisciplinary group of people from 16 nations across 5 continents, who, at a critical moment in design discourse saw a problem with the future of Care. The Lancaster Care Charter has been written in response to the vital question “Does Design Care…?” and via a series of conversations, stimulated by a range of presentations that explored a range of provocations, insights and more questions, provides answers for the contemporary context of Care. With nation and boundary now erased by the flow of Capital the Charter aims to address the complex and urgent challenges for Care as both the future possible and the responsibility of design. The Lancaster Care Charter presents a collective vision and sets out new pragmatic encounters for the design of Care and the care of Design.
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| 7. |
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Understanding and Governing Sustainable Tourism Mobility : Psychological and Behavioural Approaches.
- 2014
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Samlingsverk (redaktörskap) (refereegranskat)abstract
- Despite a growing contribution to climate change, tourist and traveller behaviour is currently not acknowledged as an important sector within the development of climate policy. Whilst tourists may be increasingly aware of potential impacts on climate change there is evidence that most are unwilling to modify their actual behaviours. Influencing individual behaviour in tourism and informing effective governance is therefore an essential part of climate change mitigation.This significant volume is the first to explore the psychological and social factors that may contribute to and inhibit sustainable change in the context of tourist and traveller behaviour. It draws on a range of disciplines to offer a critical review of the psychological understandings and behavioural aspects of climate change and tourism mobilities, in addition to governance and policies based upon psychological, behavioural and social mechanisms. It therefore provides a more informed understanding of how technology, infrastructure and cost distribution can be developed in order to reach stronger mitigation goals whilst ensuring that resistance from consumers for socio-psychological reasons are minimized.Written by leading academics from a range of disciplinary backgrounds and regions this ground breaking volume is essential reading for all those interested in the effective governance of tourism’s contribution to climate change now and in the future.
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