Illuminating Gravitational Waves: A Concordant Picture of Photons from a Neutron Star Merger

Autor: Kasliwal, M. M., Nakar, E., Singer, L. P., Kaplan, D. L., Cook, D. O., Van Sistine, A., Lau, R. M., Fremling, C., Gottlieb, O., Jencson, J. E., Adams, S. M., Feindt, U., Hotokezaka, K., Ghosh, S., Perley, D. A., Yu, P. -C., Piran, T., Allison, J. R., Anupama, G. C., Balasubramanian, A., Bannister, K. W, Bally, J., Barnes, J., Barway, S., Bellm, E., Bhalerao, V., Bhattacharya, D., Blagorodnova, N., Bloom, J. S., Brady, P. R., Cannella, C., Chatterjee, D., Cenko, S. B., Cobb, B. E., Copperwheat, C., Corsi, A., De, K., Dobie, D., Emery, S. W. K., Evans, P. A., Fox, O. D., Frail, D. A., Frohmaier, C., Goobar, A., Hallinan, G., Harrison, F., Helou, G., Hinderer, T., Ho, A. Y. Q., Horesh, A., Ip, W. -H., Itoh, R., Kasen, D., Kim, H., Kuin, N. P. M., Kupfer, T., Lynch, C., Madsen, K., Mazzali, P. A., Miller, A. A., Mooley, K., Murphy, T., Ngeow, C. -C., Nichols, D., Nissanke, S., Nugent, P., Ofek, E. O., Qi, H., Quimby, R. M., Rosswog, S., Rusu, F., Sadler, E. M., Schmidt, P., Sollerman, J., Steele, I., Williamson, A. R., Xu, Y., Yan, L., Yatsu, Y., Zhang, C., Zhao, W.
Rok vydání: 2017
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1126/science.aap9455
Popis: Merging neutron stars offer an exquisite laboratory for simultaneously studying strong-field gravity and matter in extreme environments. We establish the physical association of an electromagnetic counterpart EM170817 to gravitational waves (GW170817) detected from merging neutron stars. By synthesizing a panchromatic dataset, we demonstrate that merging neutron stars are a long-sought production site forging heavy elements by r-process nucleosynthesis. The weak gamma-rays seen in EM170817 are dissimilar to classical short gamma-ray bursts with ultra-relativistic jets. Instead, we suggest that breakout of a wide-angle, mildly-relativistic cocoon engulfing the jet elegantly explains the low-luminosity gamma-rays, the high-luminosity ultraviolet-optical-infrared and the delayed radio/X-ray emission. We posit that all merging neutron stars may lead to a wide-angle cocoon breakout; sometimes accompanied by a successful jet and sometimes a choked jet.
Comment: Science, in press DOI 10.1126/science.aap9455, 83 pages, 3 tables, 16 figures
Databáze: arXiv
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