Pulsar Coffee
15.11.19
Almog Yalinewich
Consistent with flux conservation
Turbulent dynamo
Heuristic for max field:
X ray luminosity
spin
down
luminosity
<<
X ray luminosity powered by magnetic field decay
Mini EMP from SGR 1806-20
on 21:30:26.5 UT, Dec 27, 2004
10% of the magnetic energy
2700 pulsars vs. 23 magnetars
Competing theories
Superluminous supernovae
Fast spin
High initial magnetic field
Dynamical time
Upper limit on magnetar creation birth rate
can't be measured
Proxy: X ray luminsity
Correction to spindown
Simulated
observed
Magnetar birth rate 2-20 per 1000 years
NS birth rate 17+/-2 per 1000 years
roughly 40% of NS start out as magnetars
1e46 erg giant flare every 200 years
Detectable by swift up to 100 Mpc, 5 every year
Galactic sample is close to complete