Eight new MSPs in NGC 6440 and NGC 6441
| dc.creator | Freire, Paulo C. C. | |
| dc.creator | Ransom, Scott M. | |
| dc.creator | Begin, Steve | |
| dc.creator | Stairs, Ingrid H. | |
| dc.creator | Hessels, Jason W. T. | |
| dc.creator | Frey, Lucille H. | |
| dc.creator | Camilo, Fernando | |
| dc.date | 2007-11-13 | |
| dc.date.accessioned | 2026-07-07T11:13:09Z | |
| dc.date.available | 2026-07-07T11:13:09Z | |
| dc.description | We report the discovery of five new millisecond pulsars in the globular cluster NGC 6440 and three new ones in NGC 6441; each cluster has one previously known pulsar. Four of the new pulsars are found in binary systems. One of the new pulsars, PSR J1748-2021B in NGC 6440, is notable for its eccentric (e = 0.57) and wide (P_b = 20.5 days) orbit. If the rate of advance of periastron is due solely to general relativity, we can estimate of the total mass of this binary system: 2.92 +/- 0.20 solar masses. This would imply an anomalously large mass for this pulsar, which could introduce important constraints in the study of the equation of state for cold neutron matter. | |
| dc.description | 3 pages, 3 figures. To appear in the proceedings of "40 Years of Pulsars: Millisecond Pulsars, Magnetars, and More", August 12-17, 2007, McGill University, Montreal, Canada | |
| dc.identifier | https://arxiv.org/abs/0711.2028 | |
| dc.identifier | http://arxiv.org/abs/0711.2028 | |
| dc.identifier | AIPConf.Proc.983:604-606,2008 | |
| dc.identifier | doi:10.1063/1.2900307 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191621 | |
| dc.subject | Astrophysics | |
| dc.title | Eight new MSPs in NGC 6440 and NGC 6441 | |
| dc.type | text |