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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3253
DTSTART:20140131T213000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T193853Z
LAST-MODIFIED:20140320T161955Z
LOCATION:2441 Chamberlin Hall (coffee at 4:30 pm)
SUMMARY:Circinus X-1 - A puzzle solved\, Physics Department Colloquium
 \, Sebastian Heinz\, University of Wisconsin-Madison
DESCRIPTION:Neutron stars are nature's strongest magnets. At birth the
 ir fields are thought to exceed 1e8 Tesla and can reach up to 1e11 Tes
 la. Over time\, these strong fields are believed to decay\, but this p
 rocess is expected to take millions of years. When a neutron star is b
 orn in a supernova explosion\, it may stay bound to a stellar companio
 n it was in orbit with before. In such a case\, the companion can tran
 sfer mass to the neutron star and make it shine - we call this an X-ra
 y binary. The nature of the accretion transport of matter can tell us 
 a lot about the properties of a neutron star. For example\, we can use
  X-ray binaries to probe whether the simple picture of young strong ma
 gnetized and old weakly magnetized neutron stars hold in nature. I wil
 l present results from an ongoing study of the neutron star X-ray bina
 ry Circinus X-1 that solve a number of outstanding puzzles about this 
 source and show that even young neutron stars can be weakly magnetized
 .
URL:https://www.physics.wisc.edu/events/?id=3253
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