Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope

During the Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) mission, we planned Target of Opportunity (ToO) operations to follow up on possible sources of $\gtrsim 10 \, {\rm PeV}$ neutrinos. The original plan before flight was to point the onboard Cherenkov Telescope (CT) to catch the source's path on the sky just below Earth's horizon. By using the Earth as a tau-neutrino to tau-lepton converter, the CT would then be able to look for optical extensive air shower signals induced by tau-lepton decays in the atmosphere. The CT had a field of view of $6.4^\circ$ vertical $\times$ $12.8^\circ$ horizontal. Possible neutrino source candidates include gamma ray bursts, tidal disruption events and other bursting or flaring sources. In addition, follow-ups of binary neutron star mergers would have been possible after the start of the O4 observation run from LIGO-Virgo-KAGRA. The resulting exposure is modeled using the NuSpaceSim framework in ToO mode. With the launch of the EUSO-SPB2 payload on the 13th May 2023, this summarizes the ToO program status and preliminary data, as available

"What they do to themselves" : Regarding caregivers perception concerning people with alcohol and/or substance abuse

Denna studie har som syfte att synliggöra hur sjukvårdspersonal uppfattar missbrukare. För att ta del av våra informanters uppfattningar har vi utfört kvalitativa intervjuer för att generera ett material som är grund för visare analys. Vidare har en fenomenografisk ansats använts för att analysera vårt material. Teoriernagenuskontraktetochstigmahar använts för att analysera och vidare diskutera materialet, men även tidigare forskning rörande missbrukande individer . En viktig slutsats i studien är hur informanternas egna uppfattningar påverkar deras inställning

Prestation hos kvinnor : Om kvinnors upplevelser och erfarenheter av krav i vardagens skilda miljöer

Denna antologi har som syfte att synliggöra hur kvinnor upplever och upplevs i relation till prestation samt hur kvinnors livsvillkor och identitet berörs av krav och prestation. Kvinnan i rollen som gymnasieelev, arbetssökande, och mamma är målgruppen för att belysa vår valda tematik. För att ta del av våra informanters livsberättelser har vi utfört kvalitativa intervjuer samt observationer i syfte att genera skilda frågeställningar. Vidare har grundad teori använts för att analysera vår data. Teorier så som identitet, genus, stigma och det biografiska schemat har applicerats för att analysera och vidare diskutera de respektive materialen.  En viktig slutsats i studien är att framtidsförväntningarna utgör en avgörande roll för upplevelsen av krav och prestation. Studiens övergripande slutsats är att oavsett i vilken miljö och livsfas kvinnorna befinner sig i upplevs krav att prestera i vardagen. Press upplevs vara ”normalt” tills tid för reflektion ges, i vårt fall samtalen vid intervjuerna, vilket påvisar den i samhället etablerade stressen.Prestation, identitet, livsvillkor, kvinnor, genus, stress, arbetslöshet, krav, gymnasielever, mamma, stigmatiserin

Prestation hos kvinnor : Om kvinnors upplevelser och erfarenheter av krav i vardagens skilda miljöer

Denna antologi har som syfte att synliggöra hur kvinnor upplever och upplevs i relation till prestation samt hur kvinnors livsvillkor och identitet berörs av krav och prestation. Kvinnan i rollen som gymnasieelev, arbetssökande, och mamma är målgruppen för att belysa vår valda tematik. För att ta del av våra informanters livsberättelser har vi utfört kvalitativa intervjuer samt observationer i syfte att genera skilda frågeställningar. Vidare har grundad teori använts för att analysera vår data. Teorier så som identitet, genus, stigma och det biografiska schemat har applicerats för att analysera och vidare diskutera de respektive materialen.  En viktig slutsats i studien är att framtidsförväntningarna utgör en avgörande roll för upplevelsen av krav och prestation. Studiens övergripande slutsats är att oavsett i vilken miljö och livsfas kvinnorna befinner sig i upplevs krav att prestera i vardagen. Press upplevs vara ”normalt” tills tid för reflektion ges, i vårt fall samtalen vid intervjuerna, vilket påvisar den i samhället etablerade stressen.Prestation, identitet, livsvillkor, kvinnor, genus, stress, arbetslöshet, krav, gymnasielever, mamma, stigmatiserin

Neutrino Target-of-Opportunity Sky Coverage and Scheduler for EUSO-SPB2

International audienceVery-high-energy neutrinos can be observed by detecting air shower signals. Detection of transienttarget of opportunity (ToO) neutrino sources is part of a broader multimessenger program. TheExtreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) Mission,launched on May 12, 2023, was equipped with an optical Cherenkov Telescope (CT) designed todetect up-going air showers sourced by Earth-skimming neutrinos that interact near the Earth’slimb. Presented here is an overview of the sky coverage and ToO scheduler software for EUSO-SPB2. By using the balloon trajectory coordinates and setting constraints on the positions of theSun and Moon to ensure dark skies, we can determine if and when a source direction is slightlybelow the Earth’s limb. From a source catalog, CT scheduling and pointing is performed tooptimize the search for high energy neutrinos coming from astrophysical sources. Using historicalsuper pressure balloon trajectories and the EUSO-SPB2 trajectory, sample schedules are described

The Targets of Opportunity Source Catalog for the EUSO-SPB2 Mission

International audienceThe Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) mission was designed to take optical measurements of extensive air showers (EASs) from suborbital space. The EUSO-SPB2 payload includes an optical Cherenkov Telescope (CT), which searches above and below the Earth’s limb. Above the limb, the CT measures Cherenkov light from PeV-scale EASs induced by cosmic rays. Below the limb, the CT searches for upwards-going Cherenkov emission from PeV-scale EASs induced by tau neutrinos, to follow up on astrophysical Targets of Opportunity (ToO). ​​Target candidates include gamma-ray bursts, tidal disruption events, and - after the start of the O4 observation run from Ligo-Virgo-Kagra - binary neutron star mergers. Reported here is the selection and prioritization of relevant ToOs from alert networks such as the General Coordinates Network, Transient Name Server, and Astronomer Telegrams, and the translation to a viewing schedule for EUSO-SPB2. EUSO-SPB2 launched on a NASA super pressure balloon in May of 2023 from Wanaka, NZ

The EUSO-SPB2 Fluorescence Telescope for the Detection of Ultra-High Energy Cosmic Rays

International audienceThe Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) flew on May 13$^{\text{th}}$ and 14$^{\text{th}}$ of 2023. Consisting of two novel optical telescopes, the payload utilized next-generation instrumentation for the observations of extensive air showers from near space. One instrument, the fluorescence telescope (FT) searched for Ultra-High Energy Cosmic Rays (UHECRs) by recording the atmosphere below the balloon in the near-UV with a 1~$\mu$s time resolution using 108 multi-anode photomultiplier tubes with a total of 6,912 channels. Validated by pre-flight measurements during a field campaign, the energy threshold was estimated around 2~EeV with an expected event rate of approximately 1 event per 10 hours of observation. Based on the limited time afloat, the expected number of UHECR observations throughout the flight is between 0 and 2. Consistent with this expectation, no UHECR candidate events have been found. The majority of events appear to be detector artifacts that were not rejected properly due to a shortened commissioning phase. Despite the earlier-than-expected termination of the flight, data were recorded which provide insights into the detectors stability in the near-space environment as well as the diffuse ultraviolet emissivity of the atmosphere, both of which are impactful to future experiments

The EUSO-SPB2 Fluorescence Telescope for the Detection of Ultra-High Energy Cosmic Rays

International audienceThe Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) flew on May 13$^{\text{th}}$ and 14$^{\text{th}}$ of 2023. Consisting of two novel optical telescopes, the payload utilized next-generation instrumentation for the observations of extensive air showers from near space. One instrument, the fluorescence telescope (FT) searched for Ultra-High Energy Cosmic Rays (UHECRs) by recording the atmosphere below the balloon in the near-UV with a 1~$\mu$s time resolution using 108 multi-anode photomultiplier tubes with a total of 6,912 channels. Validated by pre-flight measurements during a field campaign, the energy threshold was estimated around 2~EeV with an expected event rate of approximately 1 event per 10 hours of observation. Based on the limited time afloat, the expected number of UHECR observations throughout the flight is between 0 and 2. Consistent with this expectation, no UHECR candidate events have been found. The majority of events appear to be detector artifacts that were not rejected properly due to a shortened commissioning phase. Despite the earlier-than-expected termination of the flight, data were recorded which provide insights into the detectors stability in the near-space environment as well as the diffuse ultraviolet emissivity of the atmosphere, both of which are impactful to future experiments