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Post Info TOPIC: Nova GK Persei


L

Posts: 131433
Date:
Nova Persei 1901
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GK Persei (also Nova Persei 1901) was a bright nova occurring in 1901 1500 light-years away in Perseus. It reached a maximum magnitude of 0.2, the brightest nova of modern times until Nova Aquilae 1918.
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Position (2000): RA 03 31 11.82, Dec +43 54 16.8

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L

Posts: 131433
Date:
GK Persei
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The Cataclysmic Variable Star (Nova) GK Persei has brightened from magnitude 13.1 V (minimum) to 12.3, which indicates it may be going into outburst.

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L

Posts: 131433
Date:
GK Perseii
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Title: The unusual 2006 dwarf nova outburst of GK Perseii
Authors: P.A. Evans, A.P. Beardmore, J.P. Osborne, G.A. Wynn (U. Leicester)

The 2006 outburst of GK Perseii differed significantly at optical and ultraviolet wavelengths from typical outbursts of this object. We present multi-wavelength (X-ray, UV and optical) Swift and AAVSO data, giving unprecedented broad-band coverage of the outburst, allowing us to follow the evolution of the longer-than-normal 2006 outburst across these wavelengths. In the optical and UV we see a triple-peaked morphology with maximum brightness ~1.5 magnitudes lower than in previous years. In contrast, the peak hard X-ray flux is the same as in previous outbursts. We resolve this dichotomy by demonstrating that the hard X-ray flux only accounts for a small fraction of the total energy liberated during accretion, and interpret the optical/UV outburst profile as arising from a series of heating and cooling waves traversing the disc, caused by its variable density profile.

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L

Posts: 131433
Date:
Nova GK Persei
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Possible Minor Outburst of 0324+43 GK Persei

The Cataclysmic Variable Star (Nova) GK Persei has shown dwarf-nova-like outbursts of about 3 magnitudes every 3 years.

Position(2000): RA 03:31:11.82 Dec +43:54:16.8
Spectral type: sd:Be+
Size: 14'1 x 14'1

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