Ten hours of simultaneous observations of NP 0532 at radio frequency 146 MHz and gamma-ray energy 1011 eV have revealed no coincidence events between 3000 giant radio-pulses and gamma-ray-produced air showers. The results are consistent with the pulse stability reported at optical frequencies.
Ten hours of simultaneous observations of NP 0532 at radio frequency 146 MHz and gamma-ray energy 1011 eV have revealed no coincidence events between 3000 giant radio-pulses and gamma-ray-produced air showers. The results are consistent with the pulse stability reported at optical frequencies.
An unresolved companion to a variable star can in principle be detected by taking the apparent autocovariance function of a suitable photometric record of the system.
view Abstract Citations (3) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Polarization of Giant Pulses from PSR 0531+21 Argyle, Edward Abstract Spectra of the radio emission of PSR 0531 + 21 at 146 MHz are displayed for the average signal and for the giant pulses. The presence of strong Faraday rotation effects in the former but not the latter is consistent with the view that giants are weakly polarized main pulses and that the precursor is still strongly polarized at frequencies so low that it is blended with the main pulse. Analysis of arrival times confirms that giant pulses have the phase of the main pulse rather than that of the precursor. Subject heading: pulsars Publication: The Astrophysical Journal Pub Date: August 1973 DOI: 10.1086/152283 Bibcode: 1973ApJ...183..973A full text sources ADS |
Lenox and Frazier1 have reported the discovery of a circadian variation of methadone tolerance in rats. Their claim hinges on an observed survival of nine out of twenty-six rats (34.6%) injected at 0500 h compared to an average survival of only 17.3% for similar groups injected at five other times of day. But their use of the χ2 test is incorrect and the experimental results do not support the hypothesis that the circadian cycle influences the tolerance to methadone.
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text E. Argyle, "Use of Absorbing Glass in Lens Systems," Appl. Opt. 10, 970-972 (1971) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Friedman and Byram (1) describe a high-altitude x-ray experiment and give the results obtained from a single scan through the Virgo region. In addition to M 87, the authors claim to have detected four other x-ray sources, one of them in the direction of the quasar 3C 273. Unfortunately they do not give standard deviations for their calculated flux values, and it is therefore necessary for the critical reader to make his own estimate of the statistical significance of the results. This can be done in a variety of ways, three of which will be described briefly. In each case we deal only with that part of the record between the beginning of the controlled
view Abstract Citations (38) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Spectrometer Survey of Atomic Hydrogen in the Andromeda Nebula. Argyle, Edward Abstract A two-dimensional survey has been made of the 21-cm radiation of atomic hydrogen in the Andromeda Nebula. The beam width of the 25-m antenna was 36' between half-power points The results are presented in the form of a spectral map showing all spectra containing hydrogen emission, a contour map of the distribution of atomic hydrogen, and a map of the radial velocities. The total mass of atomic hydrogen is found to be 1 93 >c 102 solar masses if the distance to M31 is 500 kpc Interpretation of some of the findings is made difficult by the lack of circular symmetry in M3 1. Publication: The Astrophysical Journal Pub Date: February 1965 DOI: 10.1086/148159 Bibcode: 1965ApJ...141..750A full text sources ADS | data products SIMBAD (1) NED (1)
