Open AccessObservations of three slow glitches in the spin rate of the pulsar B1822−09
Author(s) -
Shabanova T. V.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2004.08580.x
Subject(s) - pulsar , physics , astrophysics , rotation (mathematics) , exponential function , spin (aerodynamics) , rotation period , astronomy , stars , geometry , mathematical analysis , mathematics , thermodynamics
Three slow glitches in the rotation rate of the pulsar B1822−09 were revealed over the 1995–2004 interval. The slow glitches observed are characterized by a gradual increase in the rotation frequency with a long time‐scale of several months, accompanied by a rapid decrease in the magnitude of the frequency first derivative by ∼1–2 per cent of the initial value and subsequent exponential increase back to its initial value on the same time‐scale. The cumulative fractional increase in the pulsar rotation rate for the three glitches amounts to Δν/ν 0 ∼ 7 × 10 −8 .