SS Cygni has started outburst again

[Mr Ian David Sharp]

Hi all,

I have been intensively imaging SS Cyg for the past few weeks, ever since I reported its last outburst and I am pretty confident a new one is just underway.

See the attached graphs which show the light curve from April where my last two sets of R and V measurements from last night are the latest points. Also, a chart of last nights measurements showing the rise.

Notice the increase in variability as the cycle progresses towards the outburst. I have seen as much as 0.4-0.5 magnitudes in both R and V over the course of 2 or 3 hours in some nights.

Cheers
Ian.

Attachments:

1. 

   SS_Cyg_new_ob.png
   

2. 

   All_Plotted.png
   

[Mr Ian David Sharp]

Here is an update from last night where I imaged SS Cyg the whole night with 545 measurements in the R and V. It was at, or near its peak brightness.

Cheers
Ian

Attachments:

1. 

   SS-Cyg-new-ob-2.png
   

2. 

   All_Plotted-1.png
   

[Mr Ian David Sharp]

I think last night (24/25 July) was the peak. I took another 6.5 hour run. Quite a bit of variability seen in the R and V plot.

Cheers
Ian.

• This reply was modified 3 months, 4 weeks ago by Mr Ian David Sharp.

Attachments:

1. 

   SS-Cyg-new-ob-3.png
   

2. 

   All_Plotted-2.png
   

[Jeremy Shears]

Nice work Ian 👍🏻

[Mr Ian David Sharp]

Hi all,

Here’s an update on SS Cygni. I’ve been intensely monitoring the star for the last two outbursts and have made nearly 7,000 photometric measurements in the R and V bands in that time. It’s noticeable how variable the magnitude is especially during the dim portion of the cycle pre-outburst. Also, two very different widths of outburst.

See attached light curve from the photometry database.

Cheers
Ian.

Attachments:

1. 

   SS-Cyg-update.jpg
   

[Jeremy Shears]

Fascinating details in the light curve you are picking up in your photometry, Ian! Intriguing slow rise during quiescence, followed by a drop leading into the next outburst.

[Mr Ian David Sharp]

Another update, nearly 10,000 brightness measurements in the last two outbursts.

There are some fascinating details in the variability within the daily bursts of measurements. I need to analyse them further to see what they contain.

Cheers
Ian

Attachments:

1. 

   SS_Cyg_18th_Aug.jpg
   

[Jeremy Shears]

Impressive coverage, Ian!

[Mr Ian David Sharp]

Hi all,

I’ve been continuing my intensive monitoring of SS Cyg and I can report another outburst has started. See attached with last night’s results.

Cheers
Ian.

Attachments:

1. 

   SS_Cyg_new_outburst.jpg
   

2. 

   All_Plotted.png
   

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