Published July 10, 2012
| Version v1
Journal article
EVOLUTIONARY TRAJECTORIES OF ULTRACOMPACT 'BLACK WIDOW' PULSARS WITH VERY LOW MASS COMPANIONS
- 1. Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata and Instituto de Astrofísica de La Plata (IALP), CCT-CONICET-UNLP, Paseo del Bosque S/N (B1900FWA), La Plata (Argentina)
- 2. Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, R. do Matão 1226 (05508-090), Cidade Universitária, São Paulo, SP (Brazil)
Description
The existence of millisecond pulsars with planet-mass companions in close orbits is challenging from the stellar evolution point of view. We calculate in detail the evolution of binary systems self-consistently, including mass transfer, evaporation, and irradiation of the donor by X-ray feedback, demonstrating the existence of a new evolutionary path leading to short periods and compact donors as required by the observations of PSR J1719-1438. We also point out the alternative of an exotic nature of the companion planet-mass star.
Availability note (English)
Available from http://dx.doi.org/10.1088/2041-8205/753/2/L33Additional details
Identifiers
Publishing Information
- Journal Title
- Astrophysical Journal Letters
- Journal Volume
- 753
- Journal Issue
- 2
- Journal Page Range
- [4 p.]
- ISSN
- 2041-8205
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 44007159
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ASTRONOMY; ASTROPHYSICS; IRRADIATION; MASS; MASS TRANSFER; ORBITS; PLANETS; PULSARS; STAR EVOLUTION; STARS; X RADIATION
- Descriptors DEC
- COSMIC RADIO SOURCES; ELECTROMAGNETIC RADIATION; EVOLUTION; IONIZING RADIATIONS; PHYSICS; RADIATIONS