GRB 150101B

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GRB 150101B
billion light-years (0.52 Gpc)[1]
z=0.13437;[1] 0.1341[2]
Redshift?? 0.093[4]
Total energy output~1.3 ×1049 ergs[1]
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GRB 150101B is a

billion light-years (0.52 Gpc) from Earth near the host galaxy 2MASX J12320498-1056010 [4] in the constellation Virgo.[2][3] The characteristics of GRB 150101B are remarkably similar to the historic event GW170817, a merger of neutron stars.[2][5][6][7]

Observations

In October 2018, astronomers reported that GRB 150101B, 1.7 billion light years away from Earth, may be analogous to the historic

optical and x-ray emissions, as well as to the nature of the associated host galaxies, are considered "striking", and this remarkable resemblance suggests the two separate and independent events may both be the result of the merger of neutron stars, and both may be a hitherto-unknown class of kilonova transients. Kilonova events, therefore, may be more diverse and common in the universe than previously understood, according to the researchers.[2][5][6][7][8]

According to one of the study researchers, Eleonora Troja, "It's a big step to go from one detected object to two. Our discovery tells us that events like GW170817 and GRB 150101B could represent a whole new class of erupting objects that turn on and off in X-rays and might actually be relatively common."[9] Troja further stated, "We've been able [to] identify this kilonova without gravitational wave data, so maybe in the future, we'll even be able to do this without directly observing a gamma-ray burst."[10] Another researcher, Geoffrey Ryan, said, "We have a case of cosmic look-alikes. They look the same, act the same and come from similar neighborhoods, so the simplest explanation is that they are from the same family of objects."[9] According to co-author, Alexander Kutyrev, "If the next such observation reveals a merger between a neutron star and a black hole, that would be truly groundbreaking. Our latest observations give us renewed hope that we'll see such an event before too long."[10] Another researcher, Hendrik Van Eerten, noted, "We need more cases like GW170817 that combine gravitational wave and electromagnetic data to find an example between a neutron star and black hole. Such a detection would be the first of its kind. Our results are encouraging for finding more mergers and making such a detection."[9]

See also

References

  1. ^
    S2CID 119489650
    .
  2. ^ a b c d e f g Staff (16 October 2018). "All in the Family: Kin of Gravitational-Wave Source Discovered". Harvard University. Retrieved 17 October 2018.
  3. ^ a b Staff. "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 17 October 2018.
  4. ^ a b c Staff (17 October 2018). "GRB 150101B". SIMBAD. Retrieved 17 October 2018.
  5. ^
    EurekAlert!
    . Retrieved 17 October 2018.
  6. ^
    PMID 30327476
    .
  7. ^ a b Mohon, Lee (16 October 2018). "GRB 150101B: A Distant Cousin to GW170817". NASA. Retrieved 17 October 2018.
  8. ^ Wall, Mike (17 October 2018). "Powerful Cosmic Flash Is Likely Another Neutron-Star Merger". Space.com. Retrieved 17 October 2018.
  9. ^ a b c Staff (17 October 2018). "Astronomers Find Object with Remarkable Similarities to Neutron-Star Merger GW170817". Sci-News.com. Retrieved 17 October 2018.
  10. ^ a b Klesman, Alison (17 October 2018). "Another neutron star merger may have been spotted - An event that looks suspiciously like the one that produced gravitational waves in 2017 hints that mergers between neutron stars and other exotic objects may be easier to find than we'd thought". Astronomy. Retrieved 17 October 2018.

External links

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