{
  "circularId": 45643,
  "eventType": [
    "X-ray Transient",
    "Radio Transient"
  ],
  "eventId": "EP260806a",
  "submitter": "Takanori Sakamoto at AGU <tsakamoto@phys.aoyama.ac.jp>",
  "createdOn": 1789812712121,
  "body": "Shogo Nohara, Natsuki Maekawa, Hiroki Takebuchi, Kotaro Niinuma, Kenta Fujisawa (Yamaguchi University)\nTakanori Sakamoto (Aoyama Gakuin University)\n\nWe observed the Einstein Probe transient EP260806a (Li et al., GCN 45299) with the Yamaguchi Interferometer (Fujisawa et al., 2022) in Yamaguchi, Japan, on August 18, September 11, and September 16, 2026 UTC. The observations were conducted simultaneously at central frequencies of 6856 and 8448 MHz, with a bandwidth of 512 MHz for each frequency band. We used 3C48 and J0043+3426 as the flux and gain calibrators. We summarize our measurements of EP260806a at each observing epoch in the table below. The upper limits are quoted at the 3-sigma noise level. \n\nMJD\t\t6856 MHz flux [mJy]\t8448 MHz flux [mJy]\n61270.57\t< 1.77\t\t\t< 2.57\n61294.85\tAffected by RFI\t\t7.03+/-0.86\n61299.52\t8.02+/-0.46\t\t9.26+/-0.77\n\nOur observations are consistent with the radio emission reported at 10 GHz with the VLA (Ho et al., GCN 45547). The measurements performed on September 16 suggest a flat or inverted radio spectrum between 6856 and 8448 MHz.\n\nWe will continue monitoring the radio flux of EP260806a with the Yamaguchi Interferometer. ",
  "subject": "EP260806a: Yamaguchi Interferometer radio detections",
  "submittedHow": "web",
  "format": "text/plain"
}