The Solar Particle Acceleration Radiation and Kinetics (SPARK) Mission Concept

© 2023by the authors. Licensee MDPI, Basel, Switzerland. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/Particle acceleration is a fundamental process arising in many astrophysical objects, including active galactic nuclei, black holes, neutron stars, gamma-ray bursts, accretion disks, solar and stellar coronae, and planetary magnetospheres. Its ubiquity means energetic particles permeate the Universe and influence the conditions for the emergence and continuation of life. In our solar system, the Sun is the most energetic particle accelerator, and its proximity makes it a unique laboratory in which to explore astrophysical particle acceleration. However, despite its importance, the physics underlying solar particle acceleration remain poorly understood. The SPARK mission will reveal new discoveries about particle acceleration through a uniquely powerful and complete combination of γ-ray, X-ray, and EUV imaging and spectroscopy at high spectral, spatial, and temporal resolutions. SPARK’s instruments will provide a step change in observational capability, enabling fundamental breakthroughs in our understanding of solar particle acceleration and the phenomena associated with it, such as the evolution of solar eruptive events. By providing essential diagnostics of the processes that drive the onset and evolution of solar flares and coronal mass ejections, SPARK will elucidate the underlying physics of space weather events that can damage satellites and power grids, disrupt telecommunications and GPS navigation, and endanger astronauts in space. The prediction of such events and the mitigation of their potential impacts are crucial in protecting our terrestrial and space-based infrastructure.Peer reviewe

Slow Solar Wind Connection Science during Solar Orbiter’s First Close Perihelion Passage

The Slow Solar Wind Connection Solar Orbiter Observing Plan (Slow Wind SOOP) was developed to utilize the extensive suite of remote-sensing and in situ instruments on board the ESA/NASA Solar Orbiter mission to answer significant outstanding questions regarding the origin and formation of the slow solar wind. The Slow Wind SOOP was designed to link remote-sensing and in situ measurements of slow wind originating at open–closed magnetic field boundaries. The SOOP ran just prior to Solar Orbiter’s first close perihelion passage during two remote-sensing windows (RSW1 and RSW2) between 2022 March 3–6 and 2022 March 17–22, while Solar Orbiter was at respective heliocentric distances of 0.55–0.51 and 0.38–0.34 au from the Sun. Coordinated observation campaigns were also conducted by Hinode and IRIS. The magnetic connectivity tool was used, along with low-latency in situ data and full-disk remote-sensing observations, to guide the target pointing of Solar Orbiter. Solar Orbiter targeted an active region complex during RSW1, the boundary of a coronal hole, and the periphery of a decayed active region during RSW2. Postobservation analysis using the magnetic connectivity tool, along with in situ measurements from MAG and SWA/PAS, showed that slow solar wind originating from two out of three of the target regions arrived at the spacecraft with velocities between ∼210 and 600 km s−1. The Slow Wind SOOP, despite presenting many challenges, was very successful, providing a blueprint for planning future observation campaigns that rely on the magnetic connectivity of Solar Orbiter

The Solar Particle Acceleration Radiation and Kinetics (SPARK) mission concept

Particle acceleration is a fundamental process arising in many astrophysical objects, including active galactic nuclei, black holes, neutron stars, gamma-ray bursts, accretion disks, solar and stellar coronae, and planetary magnetospheres. Its ubiquity means energetic particles permeate the Universe and influence the conditions for the emergence and continuation of life. In our solar system, the Sun is the most energetic particle accelerator, and its proximity makes it a unique laboratory in which to explore astrophysical particle acceleration. However, despite its importance, the physics underlying solar particle acceleration remain poorly understood. The SPARK mission will reveal new discoveries about particle acceleration through a uniquely powerful and complete combination of γ-ray, X-ray, and EUV imaging and spectroscopy at high spectral, spatial, and temporal resolutions. SPARK’s instruments will provide a step change in observational capability, enabling fundamental breakthroughs in our understanding of solar particle acceleration and the phenomena associated with it, such as the evolution of solar eruptive events. By providing essential diagnostics of the processes that drive the onset and evolution of solar flares and coronal mass ejections, SPARK will elucidate the underlying physics of space weather events that can damage satellites and power grids, disrupt telecommunications and GPS navigation, and endanger astronauts in space. The prediction of such events and the mitigation of their potential impacts are crucial in protecting our terrestrial and space-based infrastructure

The Solar Particle Acceleration Radiation and Kinetics (SPARK) Mission Concept

Particle acceleration is a fundamental process arising in many astrophysical objects, including active galactic nuclei, black holes, neutron stars, gamma-ray bursts, accretion disks, solar and stellar coronae, and planetary magnetospheres. Its ubiquity means energetic particles permeate the Universe and influence the conditions for the emergence and continuation of life. In our solar system, the Sun is the most energetic particle accelerator, and its proximity makes it a unique laboratory in which to explore astrophysical particle acceleration. However, despite its importance, the physics underlying solar particle acceleration remain poorly understood. The SPARK mission will reveal new discoveries about particle acceleration through a uniquely powerful and complete combination of γ-ray, X-ray, and EUV imaging and spectroscopy at high spectral, spatial, and temporal resolutions. SPARK’s instruments will provide a step change in observational capability, enabling fundamental breakthroughs in our understanding of solar particle acceleration and the phenomena associated with it, such as the evolution of solar eruptive events. By providing essential diagnostics of the processes that drive the onset and evolution of solar flares and coronal mass ejections, SPARK will elucidate the underlying physics of space weather events that can damage satellites and power grids, disrupt telecommunications and GPS navigation, and endanger astronauts in space. The prediction of such events and the mitigation of their potential impacts are crucial in protecting our terrestrial and space-based infrastructure

Les ressources humaines : clé de voûte de la réforme du secteur public au Québec

Les progrès technologiques, la mondialisation des échanges et l'évolution rapide des conditions sociales ont suscité une remise en question du rôle et du fonctionnement de l'État. Ces réflexions se traduisent aujourd'hui par des réformes dont l'ampleur et la direction varient en fonction des idéologies politiques, de l'organisation des institutions et de la culture gouvernementale en place. Au Québec, le gouvernement a fondé son approche, notamment, sur la conviction que le personnel de la fonction publique est un élément clé de la réforme et que la capacité d'innovation des employés du secteur public apparaît comme un moteur de la modernisation. La question est de savoir si les mesures mises de l'avant pour favoriser le rehaussement des compétences et la capacité d'innovation des employés du secteur public seront adéquates à la lumière des grandes tendances qui s'annoncent pour la prochaine décennie. En effet, il reste encore de grands chantiers inexplorés qui nécessiteront des stratégies nouvelles pour l'administration et des ajustements considérables de la part des employés publics.Rouillard Lucie, Bourgault Jacques, Charih Mohamed, Maltais Daniel. Les ressources humaines : clé de voûte de la réforme du secteur public au Québec. In: Politiques et management public, vol. 22, n° 3, 2004. « Une génération de réformes en management public : et après ? » Actes du treizième colloque international - Strasbourg, jeudi 24 et vendredi 25 novembre 2003 - Tome 2. pp. 81-97

Collaborating to improve child and youth mental health in Nunavik

Following various reports highlighting the lack of mental health services for children and youth in Nunavik (Quebec, Canada), high rates of child placements under youth protection, and gaps in the coordination of services, the Regional Partnership Committee of Nunavik decided to prioritize collaborative, community-based approaches to the health and wellbeing of children, youth, and their families. It is in this context that the regional project Ilagiinut (‘For families’) was initiated and is being piloted in Kuujjuaraapik. In mental health care, collaborative practices are highly valued, and various models are flourishing. However, collaborative care models are not necessarily easy to implement and involve a variety of ingredients, including trust, strong partnerships, clarity of roles, and power dynamics, all of which are influenced by culture and context. In this study, we conducted a total of 54 interviews with administrators, clinicians, and Inuit family members to explore their everyday expectations for and experiences with child and youth mental health services and collaboration between people involved in care. In our analysis we explore how context influences expectations, beliefs, and experiences, and ultimately how these factors impact the nature of services offered to children, youth, and families. The aim is to shed light on obstacles to and facilitators of collaboration in child and youth mental health in order to inform individuals, communities, and organizations that are trying to change policy and practice.Suite à la publication de plusieurs rapports soulignant le manque de services en santé mentale de la jeunesse au Nunavik (Québec, Canada), les hauts taux de placement sous la protection de la jeunesse, de même que les lacunes dans la coordination des services, le Comité de partenariat régional du Nunavik a décidé de prioriser des approches collaboratives et communautaires pour la prévention et le bien-être des enfants, des jeunes et de leurs familles. C’est dans ce contexte que le projet régional Ilagiinut (« Pour les familles ») a été mis en place à Kuujjuaraapik. Alors que les pratiques en collaboration sont de plus en plus valorisées en santé mentale, de telles approches ne sont pas toujours faciles à mettre en place et requièrent nombre d’ingrédients, dont la confiance, de solides partenariats, des rôles clairement définis, ainsi que des dynamiques de pouvoir propices, le tout étant marqué par la culture et le contexte du Nunavik. Dans cette étude, nous avons mené un total de 54 entrevues avec des administrateurs, cliniciens et membres de familles inuit afin de déterminer leurs attentes et leurs expériences quotidiennes en ce qui a trait aux soins offerts en santé mentale de la jeunesse et à la collaboration entre les différents acteurs impliqués. Dans notre analyse, nous explorons comment le contexte influe sur les attentes, croyances et expériences, et comment celles-ci ont des impacts sur la nature des services offerts aux enfants et aux familles. Le but est de mettre en lumière tant les obstacles que les facilitateurs de la collaboration en santé mentale de la jeunesse au Nunavik afin d’informer les individus, communautés et organisations souhaitant des changements dans les politiques et les pratiques

The Solar Particle Acceleration Radiation and Kinetics (SPARK) Mission Concept

Peer reviewed: TruePublication status: PublishedParticle acceleration is a fundamental process arising in many astrophysical objects, including active galactic nuclei, black holes, neutron stars, gamma-ray bursts, accretion disks, solar and stellar coronae, and planetary magnetospheres. Its ubiquity means energetic particles permeate the Universe and influence the conditions for the emergence and continuation of life. In our solar system, the Sun is the most energetic particle accelerator, and its proximity makes it a unique laboratory in which to explore astrophysical particle acceleration. However, despite its importance, the physics underlying solar particle acceleration remain poorly understood. The SPARK mission will reveal new discoveries about particle acceleration through a uniquely powerful and complete combination of γ-ray, X-ray, and EUV imaging and spectroscopy at high spectral, spatial, and temporal resolutions. SPARK’s instruments will provide a step change in observational capability, enabling fundamental breakthroughs in our understanding of solar particle acceleration and the phenomena associated with it, such as the evolution of solar eruptive events. By providing essential diagnostics of the processes that drive the onset and evolution of solar flares and coronal mass ejections, SPARK will elucidate the underlying physics of space weather events that can damage satellites and power grids, disrupt telecommunications and GPS navigation, and endanger astronauts in space. The prediction of such events and the mitigation of their potential impacts are crucial in protecting our terrestrial and space-based infrastructure.</jats:p

Slow Solar Wind Connection Science during Solar Orbiter’s First Close Perihelion Passage

The Slow Solar Wind Connection Solar Orbiter Observing Plan (Slow Wind SOOP) was developed to utilize the extensive suite of remote-sensing and in situ instruments on board the ESA/NASA Solar Orbiter mission to answer significant outstanding questions regarding the origin and formation of the slow solar wind. The Slow Wind SOOP was designed to link remote-sensing and in situ measurements of slow wind originating at open–closed magnetic field boundaries. The SOOP ran just prior to Solar Orbiter’s first close perihelion passage during two remote-sensing windows (RSW1 and RSW2) between 2022 March 3–6 and 2022 March 17–22, while Solar Orbiter was at respective heliocentric distances of 0.55–0.51 and 0.38–0.34 au from the Sun. Coordinated observation campaigns were also conducted by Hinode and IRIS. The magnetic connectivity tool was used, along with low-latency in situ data and full-disk remote-sensing observations, to guide the target pointing of Solar Orbiter. Solar Orbiter targeted an active region complex during RSW1, the boundary of a coronal hole, and the periphery of a decayed active region during RSW2. Postobservation analysis using the magnetic connectivity tool, along with in situ measurements from MAG and SWA/PAS, showed that slow solar wind originating from two out of three of the target regions arrived at the spacecraft with velocities between ∼210 and 600 km s ^−1 . The Slow Wind SOOP, despite presenting many challenges, was very successful, providing a blueprint for planning future observation campaigns that rely on the magnetic connectivity of Solar Orbiter