ToO Requests

ToO request form

Click to Email -- for pre-approved ToO (targets approved as a Guest Observation cycle-1 target.)
Click to Email -- for generic ToO (not approved as GO target. The data will be open to the public.)

You can request of a pre-approved ToO or a generic ToO observation sending an e-mail to the XRISM operational team.
If the mailer does not open after clicking on "Click to Email", please send an e-mail to "xrism-too-trigger@ml.isas.jaxa.jp" with the following information.

• PI's Information
• Your Name (e.g. Tashiro, Makoto):
• Institute (e.g. Saitama U.):
• Contact Email:


• Target information
• Target Name:
• RA:
• Dec:
• Object type (e.g. HMXB, BHB, GRB):
• Expected Resolve count rate:
• Maximum expected Resolve count rate:
• Approximate expected spectrum (e.g. Power Law with gamma 2.1):


• Justification (Any attachment file size must be below 5MB in total.)
• for generic ToO - Science justification (400 words max.):
• for pre-approved ToO - Trigger justification (400 words max.):
• Relevant URL (*optional):
• Likelihood (e.g. 73% within 3 days):


• Operational requirements
• Response time requested: within **+day/week
• the sooner the better? (yes | no):
• Response time justification:
• Observing time: ** ks
• for generic ToO - Justification for observing time:
• Observation mode
• Resolve (OPEN | ND filter):
• Xtend (FULL | 1/8 | 1/8+Burst):


• Others (*optional)
• Coordination with other observatories:
• Remarks: