Growth of magnetic fields in accreting millisecond pulsars: the case of J1823-3021A

Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

5 pages, 4 figures

Scientific paper

The Fermi LAT collaboration has recently reported the discovery of the pulsations of the $\gamma$ ray pulsar J1823-3021A with a luminosity which is the highest observed to date for any millisecond pulsar (MSP). This large luminosity implies a large spin down rate $\dot P$ and therefore a large magnetic field which seems to be incompatible with the observed short rotation period $P$. A possible explanation for the observed $P$ and $\dot P$ is to assume a very small radius for the star but it turns out that this interpretation requires rather extreme astrophysical conditions. Here we show that the data can be explained by considering the increase of the external magnetic field due to the diffusion of an internal magnetic field generated by r-modes during mass accretion. Our analysis offers a first evidence of the strong enhancement of the internal magnetic field due to the r-modes, what has been proposed in several papers. Moreover, the diffusion of the internal magnetic field provides a new evolutionary path for millisecond pulsars.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Growth of magnetic fields in accreting millisecond pulsars: the case of J1823-3021A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Growth of magnetic fields in accreting millisecond pulsars: the case of J1823-3021A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Growth of magnetic fields in accreting millisecond pulsars: the case of J1823-3021A will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-134038

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.