ABSTRACT Long-term studies of binary millisecond pulsars (MSPs) provide precise tests strong-field gravity, and can be used to measure neutron-star masses. PSR J1909-3744, a MSP has been the subject several pulsar timing analyses. The edge-on orbit enables measurement its mass using Shapiro delay; however, there is degeneracy in sense inclination angle, i, multiple solutions for longitude ascen...

Corresponding author: Mailing address: Food Animal Health Research Program, 14 Ohio Agricultural Research and Development Center, The Ohio State University, 15 1680 Madison Ave., Wooster, OH 44691. Phone: (330)263-3744. Fax: (330)26316 3677. E-mail: [email protected] 17 18 19 Abstract word counts: 190 20 Total word counts: 5,002 (References and figure legends not included) 21 CC EP TE D Copyright ...

In this paper we try to dynamically constrain the quadrupole mass moment Q of the binary millisecond pulsar PSR J1909-3744, which has a white dwarf as companion, from deviations of the third Kepler law. By determining the pulsar’s mass mp from the general relativistic expression of the phenomenologically determined post-Keplerian parameter s, we get Q = (−0.1 ± 1.3) × 10 kg m which is compatibl...

Precision timing of millisecond pulsars in binary systems enables observers to detect the relativistic Shapiro delay induced by space time curvature. When favourably aligned, this constraints be placed on component masses and system orientation. Here we present results campaigns seven observed with 64-antenna MeerKAT radio telescope that show evidence delay: PSRs~J0101$-$6422, J1101$-$6424, J11...

The current exposure limits of mineworkers to physical pollutants, under the Mine Health and Safety Act3 is 85 dB LAeq,8h, with a peak sound pressure level of 135 dB(A). However, the sound pressure level (SPL) of machines is generally determined according to the methods and procedures defined in SABS-ISO 3744 under free field conditions as defined in Appendix 3 of the same standard. While SPL a...

In this paper we attempt to dynamically constrain the quadrupole mass moment Q of the millisecond PSR B1257+12 pulsar from the orbital periods of its three planets, assumed to be in equatorial and circular orbits. Given the present-day accuracy in knowing their ephemerides, no post-Newtonian corrections to their motions are required. By conservatively assuming 1% and 10% uncertainties in the pu...

Streptomyces regensis strain WC-3744 was identified as a potential phosphonic acid producer in a large-scale screen of microorganisms for the presence of the pepM gene, which encodes the key phosphonate biosynthetic enzyme phosphoenolpyruvate phosphonomutase. (31)P NMR revealed the presence of several unidentified phosphonates in spent medium after growth of S. regensis. These compounds were pu...

In this paper we try to dynamically constrain the quadrupole mass moment Q of the millisecond PSR B1257+12 pulsar from the orbital periods of its three planets, assumed to be in equatorial and circular orbits. Given the present-day accuracy in knowing their ephemerides, no post-Newtonian corrections to their motions are required. By conservatively assuming 1% and 10% uncertainties in the pulsar...