An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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nulling fraction (NF)
  برخه‌ی ِ نولش  
barxe-ye nuleš
Fr.: fraction de phase d'arrêt  

The fraction of time that a → pulsar undergoes → pulse nulling. For most → nulling pulsars this fraction can range from zero (for the → Vela pulsar) to more than 50%.

See also: → null; → -ing; → fraction.