Optical Detection of Two Intermediate-Mass Binary Pulsar Companions | Zendy

B. A. Jacoby | Zendy; Deepto Chakrabarty | Zendy; M. H. van Kerkwijk | Zendy; S. R. Kulkarni | Zendy; D. L. Kaplan | Zendy

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Optical Detection of Two Intermediate-Mass Binary Pulsar Companions

Author(s) -

B. A. Jacoby,

Deepto Chakrabarty,

M. H. van Kerkwijk,

S. R. Kulkarni,

D. L. Kaplan

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/503546

Subject(s) - pulsar , white dwarf , physics , neutron star , astrophysics , millisecond pulsar , chandrasekhar limit , binary pulsar , astronomy , binary number , stars , arithmetic , mathematics

We report the detection of probable optical counterparts for two IntermediateMass Binary Pulsar (IMBP) systems, PSR J1528-3146 and PSR J1757-5322. Recentradio pulsar surveys have uncovered a handful of these systems with putativemassive white dwarf companions, thought to have an evolutionary historydifferent from that of the more numerous class of Low Mass Binary Pulsars(LMBPs) with He white dwarf companions. The study of IMBP companions viaoptical observations offers us several new diagnostics: the evolution of mainsequence stars near the white-dwarf-neutron star boundary, the physics of whitedwarfs close to the Chandrasekhar limit, and insights into the recyclingprocess by which old pulsars are spun up to high rotation frequencies. We wereunsuccessful in our attempt to detect optical counterparts of PSR J1141-6545,PSR J1157-5112, PSR J1435-6100, and PSR J1454-5846.Comment: 9 pages, 2 figures, accepted for publication in ApJ

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