Detection of a new outburst from Cygnus X-3 with the Nasu telescope array at 1.4GHz
ATel #14989; K. Tsubono (Univ. Tokyo), K. Asuma (Asaka High School), K. Niinuma (Yamaguchi Univ.), K. Takefuji (JAXA) and T. Daishido (Waseda Univ.)
on 21 Oct 2021; 09:08 UT
Credential Certification: Kimio Tsubono (tsubono@phys.s.u-tokyo.ac.jp)
Subjects: Radio, Binary, Black Hole, Transient
A new outburst has occurred from Cygnus X-3, about three months after the previous burst in 2021 July (ATel #14821). Using the Nasu telescope array, we obtained the first observation of the burst with a flux density of 0.71+-0.02 Jy on October 19 9:20 UT (MJD 59506.389) and the second one with 3.4+-0.02 Jy on October 20 9:16 UT (MJD 59507.386) at 1.4GHz.
The Nasu telescope array is a spatial fast Fourier transform (FFT) interferometer consisting of eight linearly aligned antennas with 20 m spherical dishes. This type of interferometer was developed to survey transient radio sources with an angular resolution as high as that of a 160 m dish with a field of view as wide as that of a 20 m dish.
Nasu telescope array HP:
https://nasu-radio-telescope.space