Radio-ejection and bump-related orbital period gap of millisecond binary pulsars

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

in press on the astrophysical journal

Scientific paper

10.1086/500109

The monotonic increase of the radius of low mass stars during their ascent on the red giant branch halts when they suffer a temporary contraction. This occurs when the hydrogen burning shell reaches the discontinuity in hydrogen content left from the maximum increase in the convective extension, at the time of the first dredge up, and produces a well known "bump" in the luminosity function of the red giants of globular clusters. If the giant is the mass losing component in a binary in which mass transfer occurs on the nuclear evolution time scale, this event produces a temporary stop in the mass transfer, which we will name "bump related" detachment. If the accreting companion is a neutron star, in which the previous mass transfer has spun up the pulsar down to millisecond periods, the subsequent mass transfer phase may be altered by the presence of the energetic pulsar. In fact, the onset of a radio--ejection phase produces loss of mass and angular momentum from the sytem. We show that this sequence of events may be at the basis of the shortage of systems with periods between ~ 20 and 60 days in the distribution of binaries containing millisecond pulsars. We predict that systems which can be discovered at periods into the gap should have preferentially either magnetic moments smaller than ~ 2 x10^{26}Gcm^3, or larger than ~ 4x10^{26}Gcm^3. We further show that this period gap should not be present in population II.

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

Radio-ejection and bump-related orbital period gap of millisecond binary pulsars 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 Radio-ejection and bump-related orbital period gap of millisecond binary pulsars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio-ejection and bump-related orbital period gap of millisecond binary pulsars will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-715420

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