The Evolution of Compact Binary Star Systems

We review the formation and evolution of compact binary stars consisting of white dwarfs (WDs), neutron stars (NSs), and black holes (BHs). Binary NSs and BHs are thought to be the primary astrophysical sources of gravitational waves (GWs) within the frequency band of ground-based detectors, while compact binaries of WDs are important sources of GWs at lower frequencies to be covered by space interferometers (LISA). Major uncertainties in the current understanding of properties of NSs and BHs most relevant to the GW studies are discussed, including the treatment of the natal kicks which compact stellar remnants acquire during the core collapse of massive stars and the common envelope phase of binary evolution. We discuss the coalescence rates of binary NSs and BHs and prospects for their detections, the formation and evolution of binary WDs and their observational manifestations. Special attention is given to AM CVn-stars -- compact binaries in which the Roche lobe is filled by another WD or a low-mass partially degenerate helium-star, as these stars are thought to be the best LISA verification binary GW sources.Comment: 105 pages, 18 figure

Behavioral genetics and taste

This review focuses on behavioral genetic studies of sweet, umami, bitter and salt taste responses in mammals. Studies involving mouse inbred strain comparisons and genetic analyses, and their impact on elucidation of taste receptors and transduction mechanisms are discussed. Finally, the effect of genetic variation in taste responsiveness on complex traits such as drug intake is considered. Recent advances in development of genomic resources make behavioral genetics a powerful approach for understanding mechanisms of taste

Recreational Amenities, Rural Migration Patterns, and the Great Recession

Natural and recreational amenities have played an important role in drawing migrants to rural areas in the USA over the past 40 years. However, less is known about the independent role of desirable recreational amenities in recent migration patterns, whether these patterns vary by age, and how the most recent economic recession affected them. I find that counties with desirable recreational amenities experienced net in-migration from 2000 to 2010 regardless of other county-level attributes, although the direction and magnitude of the effect varied when taking the age group of migrants into account. The recreation status of a county was a predictor of out-migration among emerging adults and in-migration for all other age groups. The Great Recession had a significant impact on migration trends in rural areas, including reducing the effect of recreational amenities in migration. These findings highlight the importance of refining the definition of “amenities,” how broader economic trends impact growth patterns in rural places, and the age-specific nature of the amenity migration trend. Knowledge about the current drivers of population patterns in rural places can help stakeholders better plan for future population trends and accommodate new or existing residents in rural recreation destinations. This study builds on existing amenity growth literature by providing a more contextual analysis of this demographic trend