Development of the Low Frequency Telescope Focal Plane Detector Modules for LiteBIRD

LiteBIRD is a JAXA-led strategic large-class satellite mission designed to measure the polarization of the cosmic microwave background and Galactic foregrounds from 34 to 448 GHz across the entire sky from L2 in the late 2020s. The scientific payload includes three telescopes which are called the low-, mid-, and high-frequency telescopes each with their own receiver that covers a portion of the mission's frequency range. The low frequency telescope will map synchrotron radiation from the Galactic foreground and the cosmic microwave background. We discuss the design, fabrication, and characterization of the low-frequency focal plane modules for low-frequency telescope, which has a total bandwidth ranging from 34 to 161 GHz. There will be a total of 4 different pixel types with 8 overlapping bands to cover the full frequency range. These modules are housed in a single low-frequency focal plane unit which provides thermal isolation, mechanical support, and radiative baffling for the detectors. The module design implements multi-chroic lenslet-coupled sinuous antenna arrays coupled to transition edge sensor bolometers read out with frequency-domain mulitplexing. While this technology has strong heritage in ground-based cosmic microwave background experiments, the broad frequency coverage, low optical loading conditions, and the high cosmic ray background of the space environment require further development of this technology to be suitable for LiteBIRD. In these proceedings, we discuss the optical and bolometeric characterization of a triplexing prototype pixel with bands centered on 78, 100, and 140 GHz.Comment: SPIE Astronomical Telescope + Instrumentation (AS22

Epidemiological studies of sexuality in old age

ABSTRACT Aim: The overall aim of this thesis was to improve knowledge about sexuality in an older population and to try to understand the context and factors, affecting sexuality in general population. It is based on three studies of general populations in Gothenburg. The multidisciplinary H70 studies (longitudinal gerontological and geriatric studies) were used for paper I and III. The 95+ study for paper II and the Prospective Population Study of Women were used for paper IV. Methods: H70 studies started in 1971-72 with the aim of studying health and health related factors in a population of 70-year-olds. 70-year-olds were also examined in 1976-77, 1992-93, and 2000-2001. Total n=1 506 eligible for examination. The study on 97-year-olds comprises those born between July 1, 1901 and December 31, 1909. Eligible for the study was n=911, among those n=591 participated (response rate 64.9%). Study IV is part of the Prospective Population Study of Women. In 1968–69, a representative systematically selected sample of 710 women aged 38 years (born 1930), 46 years (born 1922), and 50 years (born 1918). All studies included physical and psychiatric examinations. Individuals with dementia were excluded in the analysis of sexuality. All studies are based on representative population living in Gothenburg, systematically obtained from the Swedish Population Register. Results: Paper I and III In the time period 1971-2 and 2000-1, sexual activity in men increased from 47% to 66%, and in women 12% to 34%. Sexual activity was related to positive attitude toward sexuality, having a very happy relationship, having a physically and mentally healthy partner, being married or cohabiting. Paper II Almost half of the sample had a positive attitude towards sexuality and considered it to be normal for people at their own age to have sexual interest and needs. 88% of the men and 82% of the women considered questions on sexuality in a health survey to be positive and natural. Paper IV Sexuality in middle-aged and older women is dependent on a number of basic conditions, such as general well-being, physical and mental health and quality of the relationship or life situation. Conclusion: Quantity and quality of sexual experiences among 70 year olds improved over a 30 year study period. It is important to have a multifactorial, a multidisciplinary approach in the exploration of mid- and late life sexuality. A great majority find it natural to include questions on sexuality in health examinations why health professionals should not hesitate to ask about sexual concerns despite age. Keywords: ISBN: 978-91-628-9226-

Folke Wetter in memoriam

In memory of Folke Wette

Svenska domar i brottmål 1948-51

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Svensk förslag till en ny brottsbalk.

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