Probing the Eclipse of J0737−3039A with Scintillation

Coles, W. A.; McLaughlin, M. A.; Rickett, B. J.; Lyne, A. G.; Bhat, N. D. R.

doi:10.1086/428342

Cited by 51 publications

(77 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When this happens, the beam propagation is strongly affected by such a highly nontrivial environment. Although the current value of ρ 0 is somewhat uncertain, an estimate [16] yields ρ 0 ≃ 4 · 10 3 km and this is the value used in our analysis.…”

Section: Double-pulsar Observationsmentioning

confidence: 93%

Light Pseudoscalar Bosons, PVLAS and the Double Pulsar J0737-3039

Dupays

Roncadelli

2007

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

Light Pseudoscalar Bosons (LPBs) coupled to two photons are predicted by many realistic extensions of the Standard Model and give rise to birefringence and dichroism in a light beam travelling in an external magnetic field. These effects have recently been detected by the PVLAS collaboration, thereby strongly suggesting the existence of a LPB. We provide an astrophysical cross-check for such a claim. Actually, we show that in the double pulsar J0737-3039 photon-LPB conversion can give rise to a characteristic attenuation pattern of the light beam emitted by one of the pulsars when it goes through the magnetosphere of the companion. The effect under consideration shows up in the γ-ray band and can be detected by the upcoming GLAST mission.

show abstract

Section: Double-pulsar Observationsmentioning

confidence: 93%

Light Pseudoscalar Bosons, PVLAS and the Double Pulsar J0737-3039

Dupays

Roncadelli

2007

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

show abstract

“…Coles et al (2005) derived a reduced velocity of ∼ 66 km s −1 by incorporating anisotropies of the interstellar medium in the interstellar scintillation model. This reduced velocity, however, strongly depends on the adopted anisotropy model.…”

Section: Psr J0737-3039: the Double Pulsarmentioning

confidence: 99%

Formation of double compact objects

et al. 2007

View full text Add to dashboard Cite

Current observations of double neutron stars provide us with a wealth of information that we can use to investigate their evolutionary history and the physical conditions of neutron star formation. Understanding this history and formation conditions further allow us to make theoretical predictions for the formation of other double compact objects with one or two black hole components and assess the detectability of such systems by ground-based gravitational-wave interferometers. In this paper we summarize our group's body of work in the past few years and we place our conclusions and current understanding in the framework of other work in this area of astrophysical research.

show abstract

“…2004). Recently, Coles et al (2005) have used the correlation of the interstellar scintillations of both pulsars to obtain a remarkable constraint on the minimum distance between pulsars A and B on the plane of the sky, km, R p 4000 ‫ע‬ 2000 min corresponding to…”

Section: Introductionmentioning

confidence: 99%

Effects of Gravitational Lensing in the Double Pulsar System J0737-3039

Lai

Rafikov

2005

ApJ

View full text Add to dashboard Cite

We investigate the effects of gravitational lensing in the binary pulsar system J0737Ϫ3039. Current measurement of the orbital inclination allows the millisecond pulsar (A) to pass very close (at km) in projection R ≈ 4000 min to the companion pulsar (B), with comparable to the Einstein radius (≈2600 km). For this separation at the R min conjunction, lensing causes small (about 10%) magnification of the pulsar A signal on a timescale of several seconds and displaces the pulsar image on the sky plane by about 1200 km. More importantly, lensing introduces a correction (of several microseconds) to the conventional Shapiro delay formula used in pulsar timing analysis and gives rise to a geometric time delay together with the delays associated with the pulsar spin period. These lensing effects can influence the determination of the system parameters by both timing and scintillation studies. Given the current uncertainty in the orbital inclination, more extreme manifestations of lensing (e.g., magnification by a factor of several) are possible. We compare our predictions with the existing observations and discuss the possibility of detecting gravitational lensing signatures in the system. The anomalously high point in pulsar A's light curve close to superior conjunction might be caused by gravitational lensing.

show abstract

Probing the Eclipse of J0737−3039A with Scintillation

Cited by 51 publications

References 25 publications

Light Pseudoscalar Bosons, PVLAS and the Double Pulsar J0737-3039

Light Pseudoscalar Bosons, PVLAS and the Double Pulsar J0737-3039

Formation of double compact objects

Effects of Gravitational Lensing in the Double Pulsar System J0737-3039

Contact Info

Product

Resources

About