A remark on ``On the Formation and Progenitor of PSR J0737-3039: New Constraints on the Supernova Explosion Forming Pulsar B" by Willems et al., astro-ph/0602024
| dc.creator | Piran, Tsvi | |
| dc.creator | Shaviv, Nir J. | |
| dc.date | 2006-03-23 | |
| dc.date.accessioned | 2026-07-07T07:01:15Z | |
| dc.date.available | 2026-07-07T07:01:15Z | |
| dc.description | Shortly after the discovery of the binary system PSR J0737-3039 we predicted that it has a small proper motion and suggested that this implies that the progenitor mass of the younger pulsar (B) must be around 1.45M_sun. This is in contradiction to standard evolutionary scenarios that suggest a He-star progenitor with M >2.1-2.3M_sun and in sharp contrast to a velocity of ~100 km/s predicted by these models. It requires a new previously unseen type of gravitational collapse. Our (generally ignored) prediction of a low peculiar motion was confirmed later by pulsar timing observations that found v_\bot < 30 km/s. Recently Willems et al. put forward an elaborate simulation suggesting that in spite of these observations, the most likely natal kick is large (50-170 km/s) and the corresponding most likely progenitor mass is large as well. We refute this claim and show that Willems et al. implicitly assume the result that they obtain. | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0603649 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0603649 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/108219 | |
| dc.subject | Astrophysics | |
| dc.title | A remark on ``On the Formation and Progenitor of PSR J0737-3039: New Constraints on the Supernova Explosion Forming Pulsar B" by Willems et al., astro-ph/0602024 | |
| dc.type | text |