Repeating radio signal traced back to nearby galaxy

Discussion in 'Amateur Radio News' started by W0PV, Jan 7, 2020.

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  1. W0PV

    W0PV Ham Member QRZ Page

    [​IMG]

    LINK to story in New Atlas by Michael Irving.

    The universe appears to be full of strange radio signals that come and go so quickly that their sources are difficult to locate. As such, we don’t really know what causes these fast radio bursts (FRBs). But now astronomers have traced one back to its home galaxy – the closest one yet – which could help unravel the mystery.

    “What’s very interesting about this particular repeating FRB is that it is in the arm of a Milky Way-like spiral galaxy, and is the closest to Earth thus far localized,” says Kevin Bandura, KE8NEJ, co-author of the study (published in Nature). “The unique proximity and repetition of this FRB might allow for observation in other wavelengths and the potential for more detailed study to understand the nature of this type of FRB.”

    Things are only getting more confusing. (Adam Mann, Live Science)

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    KK6PIM and KA2IRQ like this.
  2. K4RGN

    K4RGN Premium Subscriber QRZ Page

    In this case, the frequencies are between 400 and 800 MHz.
     
  3. W1YW

    W1YW Ham Member QRZ Page

    This was a very difficult set of observations to undertake, as it used several separate dishes as a direct phase-disconnected intercontinental interferometer (VLBI) with the bursts lasting 1-2 MILLISECONDS. These are extremely 'bright' (in terms of emission temperature) radio sources whose extent is limited to 0.002 times the speed of light, in size (0.002 seconds time 3 x 10 ^5 km/s.= figure it out:)

    VERY energetic and thus at this time not understood.
     
    N2EY and W0PV like this.
  4. N2EY

    N2EY Premium Subscriber QRZ Page

    .002 times the speed of light is...let's see....372 miles.
     
  5. AA4OO

    AA4OO XML Subscriber QRZ Page

    A long time ago, in a galaxy far away... operators where performing some moon bounce experiments on UHF using their quark powered power amps...
     

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