منابع مشابه
Nustar Hard X-ray Observations of the Energetic Millisecond Pulsars Psr B1821−24, Psr B1937+21, and Psr J0218+4232
We present Nuclear Spectroscopic Telescope Array (NuSTAR) hard X-ray timing and spectroscopy of the three exceptionally energetic rotation-powered millisecond pulsars PSRs B1821−24, B1937+21, and J0218+4232. By correcting the NuSTAR on-board clock for phase and frequency drifts between observation intervals, we are able to recover the intrinsic hard X-ray pulse profiles of all three pulsars wit...
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ion is not something which the mind produces by processes of logic from its perception of reality, but rather a property of the categories with which it operates—not a product of the mind but rather what constitutes the mind. We never act, and could never act, in full consideration of all the facts of a particular situation, but always by singling out as relevant only some aspects of it; not by...
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We present a case study in confronting the GPT generalpurpose planner with the challenging power supply restoration (PSR) benchmark for contingent planning. PSR is derived from a real-world problem, and the dif£culty of modeling and solving it contrasts with that of the purely arti£cial benchmarks commonly used in the literature. This confrontation leads us to improve general techniques for con...
متن کاملOBSERVATIONS OF PULSARS , PSR 1509 − 58 AND PSR 1259 − 63 , BY CANGAROO 3 . 8 m TELESCOPE
The data for VHE (∼TeV) gamma rays from young gamma-ray pulsar PSR1509-58 observed in 1996 with the CANGAROO 3.8mČerenkov imaging telescope are presented, as well as the additional data from March to June of 1997. The high spin-down luminosity of the pulsar and the plerionic feature around the pulsar observed with radio and X-rays suggest that VHE gamma-ray emission is quite likely above the se...
متن کاملModel minimization by linear PSR
Predictive state representation (PSR), proposed by [Littman et al., 2002; Singh et al., 2004], are a general representation for controlled dynamical systems. We present a sufficient condition under which a linear PSR compresses a POMDP representation.
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2004
ISSN: 0004-637X,1538-4357
DOI: 10.1086/379787