MILLISECOND PULSAR AGES: IMPLICATIONS OF BINARY EVOLUTION AND A MAXIMUM SPIN LIMIT
نویسندگان
چکیده
منابع مشابه
Millisecond Pulsar Ages Implications of Binary Evolution and a Maximum Spin Frequency
In the absence of constraints from the binary companion or supernova remnant, the standard method for estimating pulsar ages is to infer an age from the rate of spindown. While the generic spin-down age may give realistic estimates for normal pulsars, it can fail for pulsars with very short periods. Details of the spin-up process during the low mass X-ray binary (LMXB) phase pose additional con...
متن کاملA Decade Of Timing An Accretion-Powered Millisecond Pulsar: The Continuing Spin Down And Orbital Evolution
The Rossi X-ray Timing Explorer has observed five outbursts from the transient 2.5 ms accretionpowered pulsar SAX J1808.4−3658 during 1998–2008. We present a pulse timing study of the most recent outburst and compare it with the previous timing solutions. The spin frequency of the source continues to decrease at a rate of (−5.5± 1.2)× 10 Hz s, which is consistent with the previously determined ...
متن کاملA Binary Millisecond Pulsar in Globular Cluster Ngc6544
We report the detection of a new 3.06ms binary pulsar in the globular cluster NGC6544 using a Fourier-domain “acceleration” search. With an implied companion mass of ∼ 0.01M⊙ and an orbital period of only Pb ∼ 1.7 hours, it displays very similar orbital properties to many pulsars which are eclipsed by their companion winds. The orbital period is the second shortest of known binary pulsars after...
متن کاملProperties and Evolution of the Redback Millisecond Pulsar Binary Psr J2129–0429
PSR J2129−0429 is a “redback” eclipsing millisecond pulsar binary with an unusually long 15.2 hr orbit. It was discovered by the Green Bank Telescope in a targeted search of unidentified Fermi gamma-ray sources. The pulsar companion is optically bright (mean mR=16.6mag), allowing us to construct the longest baseline photometric data set available for such a system. We present 10 years of arch...
متن کاملSpin frequency distributions of binary millisecond pulsars
Rotation-powered millisecond radio pulsars have been spun up to their present spin period by a 108 −109yr long X-ray-bright phase of accretion of matter and angular momentum in a low-to-intermediate mass binary system. Recently, the discovery of transitional pulsars that alternate cyclically between accretion and rotation-powered states on time scales of a few years or shorter, has demonstrated...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2010
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/715/1/335