منابع مشابه
AND ASTROPHYSICS Null-induced mode changes in PSR B0809+74
We have found that there are two distinct emission modes in PSR B0809+74. Beside its normal and most common mode, the pulsar emits in a significantly different quasi-stable mode after most or possibly all nulls, occasionally for over 100 pulses. In this mode the pulsar is brighter, the subpulse separation is less, the subpulses drift more slowly and the pulse window is shifted towards earlier l...
متن کاملAstronomy and Astrophysics Null-induced Mode Changes in Psr B0809+74
We have found that there are two distinct emission modes in PSR B0809+74. Beside its normal and most common mode, the pulsar emits in a significantly different quasi-stable mode after most or possibly all nulls, occasionally for over 100 pulses. In this mode the pulsar is brighter, the subpulse separation is less, the subpulses drift more slowly and the pulse window is shifted towards earlier l...
متن کاملMode Switching and Subpulse Drifting in PSR B 0826 − 34
We present high-quality observations of PSR B0826−34 at 1374 MHz. The emission from this pulsar exhibits strong bursts of pulses followed by long periods of ‘null’ pulses. When it is strong, the radiation extends through the whole pulse period. We show for the first time that there is weak emission during the ‘null’ phases, which should therefore be considered to be a different mode rather than...
متن کاملProteomic Analysis of Salt-Induced Changes in Protein Expression in PPARα Null Mice
PPARs are ligand-activated nuclear transcription factors that regulate β-oxidation of fatty acids in the cardiovascular system and PPARα isoform is a putative target for regulation of cardiovascular function. High salt diet is an injurious stimulus to cardiovascular function but its effect on PPARα and PPARα–associated profile of proteins is unknown. Quantitative proteomics involving a twodimen...
متن کاملChanges in vascular reactivity of the coronary artery and thoracic aorta in the delta sarcoglycan null mutant mice
Introduction: Mutations in the delta sarcoglycan gene (d-SG) cause limb-girdle muscular dystrophy type 2F with structural and functional alterations in cardiac, smooth and skeletal muscle. The objective of the present study was to improve information about changes in vascular reactivity of the thoracic aorta and the coronary artery in the perfused heart of the d-SG-null mutant mouse model. ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2002
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20020254