A luminous blue kilonova and an off-axis jet from a compact binary merger at z=0.1341

Eleanora Troja, Geoffrey Ryan, L. Piro, Hendrik Van Eerten, S. B. Cenko, Y Yoon, S.-K Lee, M. Im, T. Sakamoto, P Gatkine, A. Kutyrev, Sylvain Veilleux

Research output: Contribution to journalArticle

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Abstract

The recent discovery of a gamma-ray burst (GRB) coincident with the gravitational-wave (GW) event GW170817 revealed the existence of a population of low-luminosity short duration gamma-ray transients produced by neutron star mergers in the nearby Universe. These events could be routinely detected by existing gamma-ray monitors, yet previous observations failed to identify them without the aid of GW triggers. Here we show that GRB150101B is an analogue of GRB170817A located at a cosmological distance. GRB150101B is a faint short burst characterized by a bright optical counterpart and a long-lived X-ray afterglow. These properties are unusual for standard short GRBs and are instead consistent with an explosion viewed off-axis: the optical light is produced by a luminous kilonova, while the observed X-rays trace the GRB afterglow viewed at an angle of ~13°. Our findings suggest that these properties could be common among future electromagnetic counterparts of GW sources.

Original languageEnglish
Article number4089
Pages (from-to)1-10
Number of pages10
JournalNature Communications
Volume9
Issue number1
Early online date16 Oct 2018
DOIs
Publication statusPublished - 16 Oct 2018

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Gamma Rays
gamma ray bursts
Gamma rays
gravitational waves
Gravity waves
afterglows
gamma rays
X-Rays
neutron stars
explosions
monitors
X rays
x rays
Explosions
universe
actuators
Electromagnetic Phenomena
luminosity
Neutrons
analogs

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

A luminous blue kilonova and an off-axis jet from a compact binary merger at z=0.1341. / Troja, Eleanora; Ryan, Geoffrey ; Piro, L.; Van Eerten, Hendrik; Cenko, S. B.; Yoon, Y; Lee, S.-K; Im, M.; Sakamoto, T.; Gatkine, P; Kutyrev, A.; Veilleux, Sylvain.

In: Nature Communications, Vol. 9, No. 1, 4089, 16.10.2018, p. 1-10.

Research output: Contribution to journalArticle

Troja, E, Ryan, G, Piro, L, Van Eerten, H, Cenko, SB, Yoon, Y, Lee, S-K, Im, M, Sakamoto, T, Gatkine, P, Kutyrev, A & Veilleux, S 2018, 'A luminous blue kilonova and an off-axis jet from a compact binary merger at z=0.1341', Nature Communications, vol. 9, no. 1, 4089, pp. 1-10. https://doi.org/10.1038/s41467-018-06558-7
Troja, Eleanora ; Ryan, Geoffrey ; Piro, L. ; Van Eerten, Hendrik ; Cenko, S. B. ; Yoon, Y ; Lee, S.-K ; Im, M. ; Sakamoto, T. ; Gatkine, P ; Kutyrev, A. ; Veilleux, Sylvain. / A luminous blue kilonova and an off-axis jet from a compact binary merger at z=0.1341. In: Nature Communications. 2018 ; Vol. 9, No. 1. pp. 1-10.
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