Pulsar quadrant
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Pulsar quadrant  
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Pattern type  Oscillator  

Number of cells  18  
Bounding box  9 × 9  
Period  3  
Mod  3  
Heat  8  
Volatility  0.46  
Strict volatility  0.46  
Rotor type  Pulsar  
Discovered by  David Buckingham  
Year of discovery  1973  
 
 
 

Pulsar quadrant (or pulse) is a period3 oscillator that was found by David Buckingham in July 1973.^{[1]} It consists of a quarter of the outer part of a pulsar stabilized by a cisfuse with two tails.
Commonness
Information on this oscillator's commonness with respect to other naturallyoccurring patterns is currently unknown.
LCM oscillators
The smallest known oscillator of period 228 is an LCM oscillator comprised of a pulsar quadrant and a p76 piheptomino shuttle.
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See also
References
 ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
External links
 Pulsar quadrant at the Life Lexicon
 18P3.39 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 18 cells
 Periodic objects with minimum population 18
 Patterns with 18 cells
 Patterns found by David Buckingham
 Patterns found in 1973
 Patterns that can be constructed with 9 gliders
 Oscillators
 Oscillators with period 3
 Oscillators with mod 3
 Oscillators with heat 8
 Oscillators with volatility 0.46
 Oscillators with strict volatility 0.46
 Oscillators with rotor Pulsar
 Patterns with bilateral diagonal symmetry
 Sparkers
 Sparkers with period 3
 Weak sparkers
 Natural periodic objects