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The Emergence of a ...
The Emergence of a Lanthanide-rich Kilonova Following the Merger of Two Neutron Stars
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Tanvir, N. R. (author)
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Levan, A. J. (author)
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Gonzalez-Fernandez, C. (author)
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show more...
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Korobkin, O. (author)
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Mandel, I. (author)
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- Rosswog, Stephan (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Hjorth, J. (author)
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D'Avanzo, P. (author)
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Fruchter, A. S. (author)
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Fryer, C. L. (author)
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Kangas, T. (author)
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Milvang-Jensen, B. (author)
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Rosetti, S. (author)
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Steeghs, D. (author)
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Wollaeger, R. T. (author)
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Cano, Z. (author)
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Copperwheat, C. M. (author)
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Covino, S. (author)
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D'Elia, V. (author)
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de Ugarte Postigo, A. (author)
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Evans, P. A. (author)
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Even, W. P. (author)
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Fairhurst, S. (author)
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Jaimes, R. Figuera (author)
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Fontes, C. J. (author)
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Fujii, Y. I. (author)
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Fynbo, J. P. U. (author)
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Gompertz, B. P. (author)
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Greiner, J. (author)
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Hodosan, G. (author)
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Irwin, M. J. (author)
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Jakobsson, P. (author)
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Jorgensen, U. G. (author)
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Kann, D. A. (author)
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Lyman, J. D. (author)
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Malesani, D. (author)
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McMahon, R. G. (author)
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Melandri, A. (author)
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O'Brien, P. T. (author)
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Osborne, J. P. (author)
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Palazzi, E. (author)
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Perley, D. A. (author)
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Pian, E. (author)
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Piranomonte, S. (author)
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Rabus, M. (author)
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Rol, E. (author)
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Rowlinson, A. (author)
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Schulze, S. (author)
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Sutton, P. (author)
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Thone, C. C. (author)
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Ulaczyk, K. (author)
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Watson, D. (author)
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Wiersema, K. (author)
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Wijers, R. A. M. J. (author)
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(creator_code:org_t)
- 2017-10-16
- 2017
- English.
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In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8205 .- 2041-8213. ; 848:2
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https://doi.org/10.3...
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https://doi.org/10.3...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- We report the discovery and monitoring of the near-infrared counterpart (AT2017gfo) of a binary neutron-star merger event detected as a gravitational wave source by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo (GW170817) and as a short gamma-ray burst by Fermi Gamma-ray Burst Monitor (GBM) and Integral SPI-ACS (GRB 170817A). The evolution of the transient light is consistent with predictions for the behavior of a kilonova/ macronova powered by the radioactive decay of massive neutron-rich nuclides created via r-process nucleosynthesis in the neutron-star ejecta. In particular, evidence for this scenario is found from broad features seen in Hubble Space Telescope infrared spectroscopy, similar to those predicted for lanthanide-dominated ejecta, and the much slower evolution in the near-infrared K-s-band compared to the optical. This indicates that the late-time light is dominated by high-opacity lanthanide-rich ejecta, suggesting nucleosynthesis to the third r-process peak (atomic masses A approximate to 195). This discovery confirms that neutron-star mergers produce kilo-/macronovae and that they are at least a major-if not the dominant-site of rapid neutron capture nucleosynthesis in the universe.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- gravitational waves
- nuclear reactions
- nucleosynthesis
- abundances
- stars: neutron
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Tanvir, N. R.
-
Levan, A. J.
-
Gonzalez-Fernand ...
-
Korobkin, O.
-
Mandel, I.
-
Rosswog, Stephan
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show more...
-
Hjorth, J.
-
D'Avanzo, P.
-
Fruchter, A. S.
-
Fryer, C. L.
-
Kangas, T.
-
Milvang-Jensen, ...
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Rosetti, S.
-
Steeghs, D.
-
Wollaeger, R. T.
-
Cano, Z.
-
Copperwheat, C. ...
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Covino, S.
-
D'Elia, V.
-
de Ugarte Postig ...
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Evans, P. A.
-
Even, W. P.
-
Fairhurst, S.
-
Jaimes, R. Figue ...
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Fontes, C. J.
-
Fujii, Y. I.
-
Fynbo, J. P. U.
-
Gompertz, B. P.
-
Greiner, J.
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Hodosan, G.
-
Irwin, M. J.
-
Jakobsson, P.
-
Jorgensen, U. G.
-
Kann, D. A.
-
Lyman, J. D.
-
Malesani, D.
-
McMahon, R. G.
-
Melandri, A.
-
O'Brien, P. T.
-
Osborne, J. P.
-
Palazzi, E.
-
Perley, D. A.
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Pian, E.
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Piranomonte, S.
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Rabus, M.
-
Rol, E.
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Rowlinson, A.
-
Schulze, S.
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Sutton, P.
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Thone, C. C.
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Ulaczyk, K.
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Watson, D.
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Wiersema, K.
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Wijers, R. A. M. ...
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show less...
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- NATURAL SCIENCES
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Stockholm University