Binary and Millisecond Pulsars

Lorimer,

doi:10.12942/lrr-2005-7

Cited by 119 publications

(103 citation statements)

References 257 publications

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“…The 400 MHz surveys in the simulation seem to be a bit too sensitive. The predicted birth rate is 6.8 × 10 −4 per century, which is very close to the birth rates estimated by Lorimer [18] In Figure 3, we present the Aitoff plots and P −Ṗ diagrams for detected (left) and simulated (right) normal (dots) and MS (crosses) pulsars. Both simulated normal and ms pulsar distributions in the Galaxy are similar to the distributions of those detected.…”

Section: Resultssupporting

confidence: 78%

Population statistics study of radio and gamma-ray pulsars in the Galactic plane

Gonthier

Story

Clow

et al. 2007

Astrophys Space Sci

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We present results of our pulsar population synthesis of ordinary isolated and millisecond pulsars in the Galactic plane. Over the past several years, a program has been developed to simulate pulsar birth, evolution and emission using Monte Carlo techniques. We have added to the program the capability to simulate millisecond pulsars, which are old, recycled pulsars with extremely short periods. We model the spatial distribution of the simulated pulsars by assuming that they start with a random kick velocity and then evolve through the Galactic potential. We use a polar cap/slot gap model for γ-ray emission from both millisecond and ordinary pulsars. From our studies of radio pulsars that have clearly identifiable core and cone components, in which we fit the polarization sweep as well as the pulse profiles in order to constrain the viewing geometry, we develop a model describing the ratio of radio core-to-cone peak fluxes. In this model, short period pulsars are more conedominated than in our previous studies. We present the preliminary results of our recent study and the implications for observing these pulsars with GLAST and AG-ILE.

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Section: Resultssupporting

confidence: 78%

Population statistics study of radio and gamma-ray pulsars in the Galactic plane

Gonthier

Story

Clow

et al. 2007

Astrophys Space Sci

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“…MSPs are thus mostly found in binary systems. An entry point to the literature about pulsar and MSP formation scenarios can be found in (Lorimer 2008).…”

Section: Normal and Millisecond Pulsarsmentioning

confidence: 99%

“…It is remarkably stable over time, although every single pulse is different (see Figure 3). This stability is of key importance in pulsar timing measurements (Lorimer 2008). Sub-pulses appear inside pulses and last about 1 μs, while one speaks of microstructure when describing what appears inside subpulses (about 1 ns).…”

Section: Pulsar Behaviormentioning

confidence: 99%

Pulsar positioning system: a quest for evidence of extraterrestrial engineering

Vidal

2017

International Journal of Astrobiology

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Pulsars have at least two impressive applications. First, they can be used as highly accurate clocks, comparable in stability to atomic clocks; secondly, a small subset of pulsars, millisecond X-ray pulsars, provide all the necessary ingredients for a passive galactic positioning system. This is known in astronautics as X-ray pulsar-based navigation (XNAV). XNAV is comparable to GPS, except that it operates on a galactic scale. I propose a SETI-XNAV research program to test the hypothesis that this pulsar positioning system might be an instance of galactic-scale engineering by extraterrestrial beings (section 4). The paper starts by exposing the basics of pulsar navigation (section 2), continues with a critique of the rejection of the extraterrestrial hypothesis when pulsars were first discovered (section 3). The core section 4 proposes lines of inquiry for SETI-XNAV, related to: the pulsar distribution and power in the galaxy; their population; their evolution; possible pulse synchronizations; pulsar usability when navigating near the speed of light; decoding galactic coordinates; directed panspermia; and information content in pulses. Even if pulsars are natural, they are likely to be used as standards by ETIs in the galaxy (section 5). I discuss possible objections and potential benefits for humanity, whether the research program succeeds or not (section 6).

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“…For reviews of the discovery, see the published Nobel Prize lectures by Hulse and Taylor [195,385]. For reviews of the current status of testing general relativity with pulsars, including binary and millisecond pulsars, see [261,374,412]; specific details on every pulsar discovered to date, along with orbit elements of pulsars in binary systems, can be found at the Australia Telescope National Facility (ATNF) online pulsar catalogue [28]. Table 7 lists the current values of the key orbital and relativistic parameters for B1913+16, from analysis of data through 2006 [409].…”

Section: The Binary Pulsar and General Relativitymentioning

confidence: 99%

The Confrontation Between General Relativity and Experiment

Will¹

2009

Probing the Nature of Gravity

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The status of experimental tests of general relativity and of theoretical frameworks for analyzing them is reviewed and updated. Einstein's equivalence principle (EEP) is well supported by experiments such as the Eötvös experiment, tests of local Lorentz invariance and clock experiments. Ongoing tests of EEP and of the inverse square law are searching for new interactions arising from unification or quantum gravity. Tests of general relativity at the post-Newtonian level have reached high precision, including the light deflection, the Shapiro time delay, the perihelion advance of Mercury, the Nordtvedt effect in lunar motion, and frame-dragging. Gravitational wave damping has been detected in an amount that agrees with general relativity to better than half a percent using the Hulse-Taylor binary pulsar, and a growing family of other binary pulsar systems is yielding new tests, especially of strong-field effects. Current and future tests of relativity will center on strong gravity and gravitational waves.

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Binary and Millisecond Pulsars

Cited by 119 publications

References 257 publications

Population statistics study of radio and gamma-ray pulsars in the Galactic plane

Population statistics study of radio and gamma-ray pulsars in the Galactic plane

Pulsar positioning system: a quest for evidence of extraterrestrial engineering

The Confrontation Between General Relativity and Experiment

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