Journal ArticleDOI
Observation of a Rapidly Pulsating Radio Source
TLDR
In this article, the first report of a curious class of astronomical radio sources, distinguished by their rapid and extremely regular pulsations, was made by Hewish et al. They are now understood to be rapidly rotating, magnetized neutron stars, or pulsars.Abstract:
Unusual signals from pulsating radio sources have been recorded at the Mullard Radio Astronomy Observatory The radiation seems to come from local objects within the galaxy, and may be associated with oscillations of white dwarf or neutron stars 1968 saw the first report of a curious class of astronomical radio sources, distinguished by their rapid and extremely regular pulsations Hewish et al associated them with unusually stable oscillations in compact stars They are now understood to be rapidly rotating, magnetized neutron stars, or pulsarsread more
Citations
More filters
Journal ArticleDOI
Murchison Widefield Array Observations of Anomalous Variability: A Serendipitous Night-time Detection of Interplanetary Scintillation
David L. Kaplan,Steven Tingay,P. K. Manoharan,Jean-Pierre Macquart,Paul Hancock,John Morgan,Daniel A. Mitchell,Ron Ekers,Randall B. Wayth,Cathryn M. Trott,Tara Murphy,Divya Oberoi,Iver H. Cairns,Lucy Feng,Nadia Kudryavtseva,Gianni Bernardi,Judd D. Bowman,Frank H. Briggs,Roger J. Cappallo,Avinash A. Deshpande,Bryan Gaensler,Lincoln J. Greenhill,Natasha Hurley-Walker,Bryna J. Hazelton,Melanie Johnston-Hollitt,Colin J. Lonsdale,Stephen R. McWhirter,Eric R. Morgan,Stephen M. Ord,Thiagaraj Prabu,N. Udaya Shankar,K. S. Srivani,Ravi Subrahmanyan,Rachel L. Webster,Andrew Williams,Chrysanthi Williams +35 more
TL;DR: In this paper, the authors present observations of high-amplitude rapid (2 s) variability toward two bright, compact extragalactic radio sources out of several hundred of the brightest radio sources in one of the 30x30 deg MWA Epoch of Reionization fields using the Murchison Widefield Array (MWA).
Journal ArticleDOI
Discovering the Unexpected in Astronomical Survey Data
TL;DR: In this paper, the authors argue that most major discoveries in astronomy are unplanned, and result from surveying the Universe in a new way, rather than by testing a hypothesis or conducting an investigation with planned outcomes.
Journal ArticleDOI
Doppler/XNAV-integrated navigation system using small-area X-ray sensor
TL;DR: To reduce the area of an X-ray sensor, a Doppler/XNAV (X-ray pulsar-based navigation)–integrated navigation system is proposed and the UKF (Unscented Kalman Filter) is used as the local filters of the federated filter.
Journal ArticleDOI
Statistical mechanics of self-gravitating systems in general relativity: I. The quantum Fermi gas
TL;DR: In this paper, a general formalism was developed to determine the statistical equilibrium states of self-gravitating systems in general relativity and complete previous works on the subject, including those of Roupas and Chavanis.
Neutrinos from the Formation, Cooling, and Black Hole Collapse of Neutron Stars
TL;DR: In this article, the neutrino signal from neutron star and black hole formation is calculated by hydrodynamical modelling of the stellar collapse, and its implications are explored in terms of physics.
References
More filters
Journal ArticleDOI
Interplanetary Scintillation of Small Diameter Radio Sources
TL;DR: In this article, the authors used the black-body equations to calculate the increased radiation appropriate to the observed brightness increase in the star over a 1,000 A.u. band-width at 5,400 A.U.
Journal ArticleDOI
Normal modes of radial pulsation of stars at the end point of thermonuclear evolution
David W. Meltzer,Kip S. Thorne +1 more
Journal ArticleDOI
Energetic Particles from the Sun
C. E. Fichtel,F. B. Mcdonald +1 more
TL;DR: In this article, the authors discuss the association of solar cosmic rays with flare association, solar particle acceleration, recurrence and low energy solar particle events, and discuss the effects of solar particle particle acceleration.
Journal ArticleDOI
Possible magnetospheric phenomena associated with neutron stars
TL;DR: In this paper, it was shown that the importance of the early cooling by emission of neutrinos from the Urca process has been underestimated in the foregoing investigations, and the calculations of Miss Tsuruta indicate that a neutron star will rapidly cool to 3 or 4 × 106 °K, but that after 105 years its surface temperature will still be about 2 × 106°K.