Lucky in Life, Unlucky in Love? The Effect of Random Income Shocks on Marriage and Divorce

Economists have long been interested in the extent to which economic resources affect decisions to marry and divorce. For married couples, an increase in resources can either provide a stabilization effect or, alternatively, can enable divorce by allowing the couple to overcome costs associated with divorce. Similarly, while economic theory predicts that an increase in income makes an unmarried person more attractive to potential marriage partners, it may also make single life more attractive. However, answering these questions empirically has been difficult due to a lack of exogenous income shocks. We overcome this problem by exploiting the randomness of the Florida Lottery and comparing recipients of large prizes to those of small prizes. Results indicate that while positive income shocks of $25,000 to$50,000 do not cause statistically significant or economically meaningful changes in divorce rates, single women are less likely to marry as a result of the additional income.

The Ticket to Easy Street? The Financial Consequences of Winning the Lottery

A fundamental question faced by policymakers is how best to help individuals who are in financial trouble. This paper examines the consequences of the most basic approach: giving people large cash transfers. To determine whether this prevents or merely postpones bankruptcy, we exploit a unique dataset of Florida Lottery winners linked to bankruptcy records. Results show that although recipients of $50,000 to$150,000 are 50 percent less likely to file for bankruptcy in the two years after winning relative to small winners, they are equally more likely to file three to five years afterward. Furthermore, bankruptcy records indicate that even though the median winner of a large cash prize could have paid off all of his unsecured debt or increased equity in new or existing assets, he chose not to do either. Consequently, although we cannot be sure other recipients of financial assistance would react in the same way lottery players did, our results do suggest that some skepticism regarding the long-term effect of cash transfers may be warranted.

Crab pulsar giant pulses: Simultaneous radio and GRO observations

Observations are reported of the Crab pulsar made at radio frequencies concurrent with Oriented Scintillation Spectrometer Experiment (OSSE) observations from 15 to 27 May 1991. Using the 43 m telescope at Green Bank at 0.8 and 1.4 GHz, samples were made continuously for 10 hrs/day at intervals of 100 to 300 microsecs. The analysis of the radio data includes calculation of histograms of pulse intensities, absolute timing to about 20 microsec precision, and characterization of intensity variations on time scales from the 33 ms spin period to days. The most detailed analysis is presented made of giant pulses. The ultimate goal is to bin the radio data into giant and nongiant pulses and to form average waveforms of OSSE data for the corresponding pulse periods. A test is done to see whether the violet radio fluctuations (which are not seen in other radio pulsars to the same degree) are correlated with low energy gamma rays, yielding constraints on the radio coherence mechanism and the steadiness of the electron-positron outflow in the magnetosphere. Timing analysis of the radio data provides a well defined ephemeris over the specified range of epochs. The gamma ray pulse phase was predicted with an error of less than 70 microsecs

Is Direct Access to Obstetricians/Gynecologists Effective at Improving Maternal Health Behaviors?: Direct Access to OB/GYNs

To examine the effects of state legislation mandating direct access to obstetricians and gynecologists (OB/GYNs) on maternal health behaviors and infant health outcomes

Wide-field dynamic astronomy in the near-infrared with Palomar Gattini-IR and DREAMS

There have been a dramatic increase in the number of optical and radio transient surveys due to astronomical transients such as gravitational waves and gamma ray bursts, however, there have been a limited number of wide-field infrared surveys due to narrow field-of-view and high cost of infrared cameras, we present two new wide-field near-infrared fully automated surveyors; Palomar Gattini-IR and the Dynamic REd All-sky Monitoring Survey (DREAMS). Palomar Gattini-IR, a 25 square degree J-band imager that begun science operations at Palomar Observatory, USA in October 2018; we report on survey strategy as well as telescope and observatory operations and will also providing initial science results. DREAMS is a 3.75 square degree wide-field imager that is planned for Siding Spring Observatory, Australia; we report on the current optical and mechanical design and plans to achieve on-sky results in 2020. DREAMS is on-track to be one of the first astronomical telescopes to use an Indium Galium Arsenide (InGaAs) detector and we report initial on-sky testing results for the selected detector package. DREAMS is also well placed to take advantage and provide near-infrared follow-up of the LSST

A powerful bursting radio source towards the Galactic Centre

Transient astronomical sources are typically powered by compact objects and usually signify highly explosive or dynamic events. While radio astronomy has an impressive record of obtaining high time resolution observations, usually it is achieved in quite narrow fields-of-view. Consequently, the dynamic radio sky is poorly sampled, in contrast to the situation in the X- and gamma-ray bands in which wide-field instruments routinely detect transient sources. Here we report a new transient source, GCRT J1745-3009, detected in 2002 during a moderately wide-field radio transient monitoring program of the Galactic center (GC) region at 0.33 GHz. The characteristics of its bursts are unlike those known for any other class of radio transient. If located in or near the GC, its brightness temperature (~10^16 K) and the implied energy density within GCRT J1745-3009 vastly exceeds that observed in most other classes of radio astronomical sources, and is consistent with coherent emission processes rarely observed. We conclude that GCRT J1745-3009 is the first member of a new class of radio transient sources, the first of possibly many new classes to be identified through current and upcoming radio surveys.Comment: 16 pages including 3 figures. Appears in Nature, 3 March 200

HIV, Hepatitis C, and Hepatitis B Infections and Associated Risk Behavior in Injection Drug Users, Kabul, Afghanistan

Behavior of injection drug users increases the risk for an HIV epidemic

The Dynamic Infrared Sky

Opening up the dynamic infrared sky for systematic time-domain exploration would yield many scientific advances. Multi-messenger pursuits such as localizing gravitational waves from neutron star mergers and quantifying the nucleosynthetic yields require the infrared. Another multi-messenger endeavor that needs infrared surveyors is the study of the much-awaited supernova in our own Milky Way. Understanding shocks in novae, true rates of supernovae and stellar mergers are some other examples of stellar evolution and high energy physics wherein the answers are buried in the infrared. We discuss some of the challenges in the infrared and pathfinders to overcome them. We conclude with recommendations on both infrared discovery engines and infrared follow-up machines that would enable this field to flourish in the next decade.Comment: Astro2020 Science White Paper for Decadal Surve