A fair use statement regarding the full text of the request

Your requested [VLBA 24 and 43 GHz observations of massive binary black hole candidate PKS 1155+251] is currently limited to Xinjiang Astronomical Observatory, Chinese Academy of Sciences internal sharing.

To solicit author authorization, you need to provide the following information: name, organization, personal e-mail, reason for request. The information you provide will be reviewed and you are committed to the truth of the information provided. The personal information you provide will be protected according to law.