Warm feet promote the rapid onset of sleep
Article Abstract:
The degree of dilation of blood vessels in the skin of the hands and feet, which boosts heat loss in these extremities, is the most reliable physiological predictor for the rapid beginning of sleep. Research linking data from two intervention studies intended to prompt phase shifts in the circadian pacemaker indicates that the connection between distal vasodilation and the ability to fall asleep is functional, rather than merely correlative. It is predicted that conventional hypnotics and other sleep-inducing aids all prompt dilation of distal blood vessels and heat loss prior to the onset of sleep.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Life beyond the pulsar death valley
Article Abstract:
Radio pulsars have been known for more than 30 years, and the slowest radio pulsar detected so far has been reported. The detection of an 8.5-second radio pulsar, J2144-3933, will mean theorists will have to reconsider the way pulsars shine. A popular idea is that the observed radio emission occurs from groups of charged particles streaming out along magnetic field lines. However pulsar J2144-3933's rotation period is nearly twice as long as the previous record holder's 5.1 second period, but has stayed alive in the region reserved for the dead.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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A new rapid X-ray repeater
Article Abstract:
Compton Gamma Ray Observatory researchers have discovered a new rapidly repeating X-ray burster which they have named GROJ1744-28. The burster, believed to be a neutron star, emits bursts lasting between six and 100 seconds and arriving at intervals which have risen from around 200 seconds to approximately an hour. GROJ1744-28 is expected to provide valuable insights on how the magnetic fields of neutron stars decay.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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