Hi all, I'm Mariko Kimura at Kanazawa University, used to be a member of VSNET group. My proposal of the X-ray satellite of XRISM on GK Per has been approved with priority A. I will trigger a ToO to get high-resolution X-ray spectra of this object around the outburst maximum to identify the mechanism of short-term variability. I hope this object enters a large outburst, and would be very happy if you continue optical monitoring observations. Thank you, Mariko On 2026/07/12 5:15, Gary Poyner via vsnet-alert wrote:

I have forwarded your email to BAAVSS Alert.

Please contact me directly if you want to post to our alert group.

Regards

Gary Poyner

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On Sat, 11 Jul 2026 at 20:37, Keisuke Isogai via vsnet-alert < vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp> wrote:

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Date: Sat, 11 Jul 2026 10:49:32 +0100 From: "Bob Dryden via groups.io" <bobdryden=ntlworld.com@groups.io> To: baavss-alert@groups.io Subject: Re: [baavss-alert] GK Per

Can any one confirm GK Per is slightly brighter than usual? I had it at 12.6 this morning (11th July)

Bob Dryden We observed GK Per about one hour earlier. The brightness was g~12.05. The object will be undergoing an outburst.

I do not have posting privileges for baavss-alert, so I am posting here instead. I apologize for the inconvenience.