HZ Her/Her X-1 is one of the most popular low-mass X-ray binary
star systems, which consists of a neutron star (Her X-1) and a
post-main-sequence star (HZ Her). Her X-1 is one of the first two
founding members of the accretion-powered X-ray pulsars class. Due
to its large luminosity and low interstellar absorption Her X-1
remains one of the most studied pulsars. The system is
characterized by a great wealth of phenomena including 1.24 s
regular X-ray pulsations, 1.7-day orbital period eclipses, a
superorbital X-ray intensity cycle of 35 days, and a large number
of highly variable X-ray absorption events coined light-curve dips
by Riccardo Giacconi, one of the 2002 Physics Nobel Prize laureates
and founder of X-ray Astronomy. Unlike the periodic X-ray flux
modulations, the light-curve dips are not well understood despite
more than 30 years of intense research work. We present here the
largest and most recent record of Her X-1's light-curve dips, and
propose a theoretical model that reproduces the timing of any of
the observed light-curve dips. The model is based on a single dip
production mechanism and explains most dip properties, including
the famous marching dip effect.
General
Imprint: |
Lap Lambert Academic Publishing
|
Country of origin: |
Germany |
Release date: |
July 2012 |
First published: |
July 2012 |
Authors: |
Ciprian D. Igna
• Denis A. Leahy
|
Dimensions: |
229 x 152 x 17mm (L x W x T) |
Format: |
Paperback - Trade
|
Pages: |
296 |
ISBN-13: |
978-3-659-14886-6 |
Categories: |
Books >
Science & Mathematics >
Physics >
General
|
LSN: |
3-659-14886-5 |
Barcode: |
9783659148866 |
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