Two Years of Nonthermal Emission from the Binary Neutron Star Merger GW170817: Rapid Fading of the Jet Afterglow and First Constraints on the Kilonova Fastest Ejecta von Hajela, A., Margutti, R., Alexander, K. D., Kathirgamaraju, A., Baldeschi, A., Guidorzi, C., Giannios, D., Fong, W., Wu, Y., MacFadyen, A., Paggi, A., Berger, E., Blanchard, P. K., Chornock, R., Coppejans, D. L., Cowperthwaite, P. S., Eftekhari, T., Gomez, S., Hosseinzadeh, G., Laskar, T., Metzger, B. D., Nicholl, M., Paterson, K., Radice, D., Sironi, L., Terreran, G., Villar, V. A., Williams, P. K. G., Xie, X., Zrake, J.

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The Optical Afterglow of GW170817: An Off-axis Structured Jet and Deep Constraints on a Globular Cluster Origin von Fong, W., Blanchard, P. K., Alexander, K. D., Strader, J., Margutti, R., Hajela, A., Villar, V. A., Wu, Y., Ye, C. S., Berger, E., Chornock, R., Coppejans, D., Cowperthwaite, P. S., Eftekhari, T., Giannios, D., Guidorzi, C., Kathirgamaraju, A., Laskar, T., Macfadyen, A., Metzger, B. D., Nicholl, M., Paterson, K., Terreran, G., Sand, D. J., Sironi, L., Williams, P. K. G., Xie, X., Zrake, J.

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Compact steep-spectrum sources as the parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies von Berton, M., Caccianiga, A., Foschini, L., Peterson, B. M., Mathur, S., Terreran, G., Ciroi, S., Congiu, E., Cracco, V., Frezzato, M., La Mura, G., Rafanelli, P.

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The diversity of Type II supernova versus the similarity in their progenitors von Valenti, S., Howell, D. A., Stritzinger, M. D., Graham, M. L., Hosseinzadeh, G., Arcavi, I., Bildsten, L., Jerkstrand, A., McCully, C., Pastorello, A., Piro, A. L., Sand, D., Smartt, S. J., Terreran, G., Baltay, C., Benetti, S., Brown, P., Filippenko, A. V., Fraser, M., Rabinowitz, D., Sullivan, M., Yuan, F.

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The Diverse Properties of Type Icn Supernovae Point to Multiple Progenitor Channels von Pellegrino, C., Howell, D. A., Terreran, G., Arcavi, I., Bostroem, K. A., Brown, P. J., Burke, J., Dong, Y., Gilkis, A., Hiramatsu, D., Hosseinzadeh, G., McCully, C., Modjaz, M., Newsome, M., Gonzalez, E. Padilla, Pritchard, T. A., Sand, D. J., Valenti, S., Williamson, M.

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An Embedded X-Ray Source Shines through the Aspherical AT 2018cow: Revealing the Inner Workings of the Most Luminous Fast-evolving Optical Transients von Margutti, R., Metzger, B. D., Chornock, R., Vurm, I., Roth, N., Grefenstette, B. W., Savchenko, V., Cartier, R., Steiner, J. F., Terreran, G., Margalit, B., Migliori, G., Milisavljevic, D., Alexander, K. D., Bietenholz, M., Blanchard, P. K., Bozzo, E., Brethauer, D., Chilingarian, I. V., Coppejans, D. L., Ducci, L., Ferrigno, C., Fong, W., Götz, D., Guidorzi, C., Hajela, A., Hurley, K., Kuulkers, E., Laurent, P., Mereghetti, S., Nicholl, M., Patnaude, D., Ubertini, P., Banovetz, J., Bartel, N., Berger, E., Coughlin, E. R., Eftekhari, T., Frederiks, D. D., Kozlova, A. V., Laskar, T., Svinkin, D. S., Drout, M. R., MacFadyen, A., Paterson, K.

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Ubiquitous Late Radio Emission from Tidal Disruption Events von Cendes, Y., Berger, E., Alexander, K. D., Chornock, R., Margutti, R., Metzger, B., Wieringa, M. H., Bietenholz, M. F., Hajela, A., Laskar, T., Stroh, M. C., Terreran, G.

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THE OUTBURST DECAY OF THE LOW MAGNETIC FIELD MAGNETAR SGR 0418+5729 von Rea, N, Israel, G L, Pons, J A, Turolla, R, Vigano, D, Zane, S, Esposito, P, Perna, R, Papitto, A, TERRERAN, G

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Jets in Hydrogen-poor Superluminous Supernovae: Constraints from a Comprehensive Analysis of Radio Observations von Coppejans, D. L., Margutti, R., Guidorzi, C., Chomiuk, L., Alexander, K. D., Berger, E., Bietenholz, M. F., Blanchard, P. K., Challis, P., Chornock, R., Drout, M., Fong, W., MacFadyen, A., Migliori, G., Milisavljevic, D., Nicholl, M., Parrent, J. T., Terreran, G., Zauderer, B. A.

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Final Moments. I. Precursor Emission, Envelope Inflation, and Enhanced Mass Loss Preceding the Luminous Type II Supernova 2020tlf von Jacobson-Galán, W. V., Dessart, L., Jones, D. O., Margutti, R., Coppejans, D. L., Dimitriadis, G., Foley, R. J., Kilpatrick, C. D., Matthews, D. J., Rest, S., Terreran, G., Aleo, P. D., Auchettl, K., Blanchard, P. K., Coulter, D. A., Davis, K. W., de Boer, T. J. L., DeMarchi, L., Drout, M. R., Earl, N., Gagliano, A., Gall, C., Hjorth, J., Huber, M. E., Ibik, A. L., Milisavljevic, D., Pan, Y.-C., Rest, A., Ridden-Harper, R., Rojas-Bravo, C., Siebert, M. R., Smith, K. W., Taggart, K., Tinyanont, S., Wang, Q., Zenati, Y.

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Optical follow-up of the tidal disruption event iPTF16fnl: new insights from X-shooter observations von Onori, F, Cannizzaro, G, Jonker, P G, Fraser, M, Kostrzewa-Rutkowska, Z, Martin-Carrillo, A, Benetti, S, Elias-Rosa, N, Gromadzki, M, Harmanen, J, Mattila, S, Strizinger, M D, Terreran, G, Wevers, T

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Massive stars exploding in a He-rich circumstellar medium – IX. SN 2014av, and characterization of Type Ibn SNe von Pastorello, A., Wang, X.-F., Ciabattari, F., Bersier, D., Mazzali, P. A., Gao, X., Xu, Z., Zhang, J.-J., Tokuoka, S., Benetti, S., Cappellaro, E., Elias-Rosa, N., Harutyunyan, A., Huang, F., Miluzio, M., Mo, J., Ochner, P., Tartaglia, L., Terreran, G., Tomasella, L., Turatto, M.

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Absorbed relativistic jets in radio-quiet narrow-line Seyfert 1 galaxies von Berton, M., Jarvela, E., Crepaldi, L., Lahteenmaki, A., Tornikoski, M., Congiu, E., Kharb, P., Terreran, G., Vietri, A.

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Late-time observations of the extraordinary Type II supernova iPTF14hls von Sollerman, J., Taddia, F., Arcavi, I., Fremling, C., Fransson, C., Burke, J., Cenko, S. B., Andersen, O., Andreoni, I., Barbarino, C., Blagorodova, N., Brink, T. G., Filippenko, A. V., Gal-Yam, A., Hiramatsu, D., Hosseinzadeh, G., Howell, D. A., de Jaeger, T., Lunnan, R., McCully, C., Perley, D. A., Tartaglia, L., Terreran, G., Valenti, S., Wang, X.

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Luminous red novae: Stellar mergers or giant eruptions? von Pastorello, A., Mason, E., Taubenberger, S., Fraser, M., Cortini, G., Tomasella, L., Botticella, M. T., Elias-Rosa, N., Kotak, R., Smartt, S. J., Benetti, S., Cappellaro, E., Turatto, M., Tartaglia, L., Djorgovski, S. G., Drake, A. J., Berton, M., Briganti, F., Brimacombe, J., Bufano, F., Cai, Y.-Z., Chen, S., Christensen, E. J., Ciabattari, F., Congiu, E., Dimai, A., Inserra, C., Kankare, E., Magill, L., Maguire, K., Martinelli, F., Morales-Garoffolo, A., Ochner, P., Pignata, G., Reguitti, A., Sollerman, J., Spiro, S., Terreran, G., Wright, D. E.

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Follow-up of the Neutron Star Bearing Gravitational-wave Candidate Events S190425z and S190426c with MMT and SOAR von Hosseinzadeh, G., Cowperthwaite, P. S., Gomez, S., Villar, V. A., Nicholl, M., Margutti, R., Berger, E., Chornock, R., Paterson, K., Fong, W., Savchenko, V., Short, P., Alexander, K. D., Blanchard, P. K., Braga, J., Calkins, M. L., Cartier, R., Coppejans, D. L., Eftekhari, T., Laskar, T., Ly, C., Patton, L., Pelisoli, I., Reichart, D. E., Terreran, G., Williams, P. K. G.

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Discovery of the Optical Afterglow and Host Galaxy of Short GRB 181123B at z = 1.754: Implications for Delay Time Distributions von Paterson, K., Fong, W., Nugent, A., Escorial, A. Rouco, Leja, J., Laskar, T., Chornock, R., Miller, A. A., Scharwächter, J., Cenko, S. B., Perley, D., Tanvir, N. R., Levan, A., Cucchiara, A., Cobb, B. E., De, K., Berger, E., Terreran, G., Alexander, K. D., Nicholl, M., Blanchard, P. K., Cornish, D.

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Evidence for X-Ray Emission in Excess to the Jet-afterglow Decay 3.5 yr after the Binary Neutron Star Merger GW 170817: A New Emission Component von Hajela, A., Margutti, R., Bright, J. S., Alexander, K. D., Metzger, B. D., Nedora, V., Kathirgamaraju, A., Margalit, B., Radice, D., Guidorzi, C., Berger, E., MacFadyen, A., Giannios, D., Chornock, R., Heywood, I., Sironi, L., Gottlieb, O., Coppejans, D., Laskar, T., Cendes, Y., Duran, R. Barniol, Eftekhari, T., Fong, W., McDowell, A., Nicholl, M., Xie, X., Zrake, J., Bernuzzi, S., Broekgaarden, F. S., Kilpatrick, C. D., Terreran, G., Villar, V. A., Blanchard, P. K., Gomez, S., Hosseinzadeh, G., Matthews, D. J., Rastinejad, J. C.

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The Broadband Counterpart of the Short GRB 200522A at z = 0.5536: A Luminous Kilonova or a Collimated Outflow with a Reverse Shock? von Fong, W., Laskar, T., Rastinejad, J., Escorial, A. Rouco, Schroeder, G., Barnes, J., Kilpatrick, C. D., Paterson, K., Berger, E., Metzger, B. D., Dong, Y., Nugent, A. E., Strausbaugh, R., Blanchard, P. K., Goyal, A., Cucchiara, A., Terreran, G., Alexander, K. D., Eftekhari, T., Fryer, C., Margalit, B., Margutti, R., Nicholl, M.

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A Mildly Relativistic Outflow from the Energetic, Fast-rising Blue Optical Transient CSS161010 in a Dwarf Galaxy von Coppejans, D. L., Margutti, R., Terreran, G., Nayana, A. J., Coughlin, E. R., Laskar, T., Alexander, K. D., Bietenholz, M., Caprioli, D., Chandra, P., Drout, M. R., Frederiks, D., Frohmaier, C., Hurley, K. H, Kochanek, C. S., MacLeod, M., Meisner, A., Nugent, P. E., Ridnaia, A., Sand, D. J., Svinkin, D., Ward, C., Yang, S., Baldeschi, A., Chilingarian, I. V., Dong, Y., Esquivia, C., Fong, W., Guidorzi, C., Lundqvist, P., Milisavljevic, D., Paterson, K., Reichart, D. E., Shappee, B., Stroh, M. C., Valenti, S., Zauderer, B. A., Zhang, B.

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