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SS Cygni, unusual outburst 2019-2020

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#1 DHEB

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Posted 22 January 2020 - 04:14 AM

I guess many members of this forum have already noticed the last (now already finishing?) unusual outburst of SS Cygni. It does not look at all as the usual outburst (fast up, a little slower down), but rather like a fairly symmetrical bell shaped one (lazy up, lazy down). The outburst even sports a "hump" (?!) on the upward part of the cycle.

 

What's going on at SS Cyg? This last part of the light curve looks almost like a SR variable!

 

Cyg-SS_2019-10-21_2020-01-22.png


Edited by DHEB, 22 January 2020 - 04:51 AM.

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#2 Rich (RLTYS)

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Posted 22 January 2020 - 09:04 AM

With most variable stars, in this case SS Cyg, no two light curves are quite the same. The bump in the middle does seem higher then normal.


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#3 DHEB

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Posted 23 January 2020 - 03:31 AM

With most variable stars, in this case SS Cyg, no two light curves are quite the same. The bump in the middle does seem higher then normal.

Sure, no two curves are alike. But this one is much different from the normal ones. There are very few such in the observations history of the star. That's why this cycle is remarkable.




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