Observations made of the X-ray pulsar EXO1722-363 using the Proportional Counter Array and All Sky Monitor on board the Rossi X-ray Timing Explorer reveal the orbital period of this system to be 9.741 ± 0.004 d from periodic changes in the source flux. The detection of eclipses, together with the values of the pulse and orbital periods, suggest that this source consists of a neutron star accret...

B. Kutschan, K. Morawetz, S. Thoms 1 Münster University of Applied Science, Stegerwaldstrasse 39, 48565 Steinfurt, Germany International Institute of Physics (IIP) Federal University of Rio Grande do Norte Av. Odilon Gomes de Lima 1722, 59078-400 Natal, Brazil Max-Planck-Institute for the Physics of Complex Systems, 01187 Dresden, Germany and Alfred Wegener Institut, Am Handelshafen 12, D-27570...

Aims. We report near-infrared (NIR) observations of the mass donors of the eclipsing high-mass X-ray binary (HMXB) systems EXO 1722-363 and OAO 1657-415 in order to derive their accurate spectral classifications. Methods. ESO/VLT observations of the targets with the NIR spectrometer ISAAC were compared with several published NIR spectral atlases of O and B supergiants, an identification of each...

BACKGROUND The polymorphisms in cluster of differentiation 152 (CD152) gene have been reported to be associated with breast cancer (BC), but relevant findings were far from conclusive. Therefore, we carried out this meta-analysis to combine those results for a clearer perspective on this issue. RESULTS In our meta-analysis, a total of 8 eligible publications of 19 case-control studies were se...

The thermal state of the intergalactic medium (IGM) provides an indirect probe of both the H I and He II reionization epochs. Current constraints on the IGM temperature from the Lyα forest are restricted to the redshift range 2 ≤ z ≤ 4.5, limiting the ability to probe the thermal memory of H I reionization towards higher redshift. In this work, we present the first direct measurement of the IGM...

Latimer et al. (Reports, 9 September 2005, p. 1722) used an approximate likelihood function to estimate parameters of Hubbell's neutral model of biodiversity. Reanalysis with the exact likelihood not only yields different estimates but also shows that two similar likelihood maxima for very different parameter combinations can occur. This reveals a limitation of using species abundance data to g...