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K2 Observations of SN 2018oh Reveal a Two-Component Rising Light Curve for a Type Ia Supernova

(2018)

Authors:

G Dimitriadis, RJ Foley, A Rest, D Kasen, AL Piro, A Polin, DO Jones, A Villar, G Narayan, DA Coulter, CD Kilpatrick, Y-C Pan, C Rojas-Bravo, OD Fox, SW Jha, PE Nugent, AG Riess, D Scolnic, MR Drout, G Barentsen, J Dotson, M Gully-Santiago, C Hedges, AM Cody, T Barclay, S Howell, P Garnavich, BE Tucker, E Shaya, R Mushotzky, RP Olling, S Margheim, A Zenteno, J Coughlin, JE Van Cleve, J Vinicius de Miranda Cardoso, KA Larson, KM McCalmont-Everton, CA Peterson, SE Ross, LH Reedy, D Osborne, C McGinn, L Kohnert, L Migliorini, A Wheaton, B Spencer, C Labonde, G Castillo, G Beerman, K Steward, M Hanley, R Larsen, R Gangopadhyay, R Kloetzel, T Weschler, V Nystrom, J Moffatt, M Redick, K Griest, M Packard, M Muszynski, J Kampmeier, R Bjella, S Flynn, B Elsaesser, KC Chambers, HA Flewelling, ME Huber, EA Magnier, CZ Waters, ASB Schultz, J Bulger, TB Lowe, M Willman, SJ Smartt, KW Smith, S Points, GM Strampelli, J Brimacombe, P Chen, JA Munoz, RL Mutel, J Shields, PJ Vallely, S Villanueva, W Li, X Wang, J Zhang, H Lin, J Mo, X Zhao, H Sai, X Zhang, K Zhang, T Zhang, L Wang, J Zhang, E Baron, JM DerKacy, L Li, Z Chen, D Xiang, L Rui, L Wang, F Huang, X Li, G Hosseinzadeh, DA Howell, I Arcavi, D Hiramatsu, J Burke, S Valenti, JL Tonry, L Denneau, AN Heinze, H Weiland, B Stalder, J Vinko, K Sarneczky, A Pa, A Bodi, Zs Bognar, B Csak, B Cseh, G Csornyei, O Hanyecz, B Ignacz, Cs Kalup, R Konyves-Toth, L Kriskovics, A Ordasi, I Rajmon, A Sodor, R Szabo, R Szakats, G Zsidi, SC Williams, J Nordin, R Cartier, C Frohmaier, L Galbany, CP Gutierrez, I Hook, C Inserra, M Smith, DJ Sand, JE Andrews, N Smith, C Bilinski
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Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the $Kepler$ 2 Observations

(2018)

Authors:

W Li, X Wang, J Vinkó, J Mo, G Hosseinzadeh, DJ Sand, J Zhang, H Lin, T Zhang, L Wang, J Zhang, Z Chen, D Xiang, L Rui, F Huang, X Li, X Zhang, L Li, E Baron, JM Derkacy, X Zhao, H Sai, K Zhang, L Wang, DA Howell, C McCully, I Arcavi, S Valenti, D Hiramatsu, J Burke, A Rest, P Garnavich, BE Tucker, G Narayan, E Shaya, S Margheim, A Zenteno, A Villar, G Dimitriadis, RJ Foley, Y-C Pan, DA Coulter, OD Fox, SW Jha, DO Jones, DN Kasen, CD Kilpatrick, AL Piro, AG Riess, C Rojas-Bravo, BJ Shappee, TW-S Holoien, KZ Stanek, MR Drout, K Auchettl, CS Kochanek, JS Brown, S Bose, D Bersier, J Brimacombe, P Chen, S Dong, S Holmbo, JA Muñoz, RL Mutel, RS Post, JL Prieto, J Shields, D Tallon, TA Thompson, PJ Vallely, S Villanueva, SJ Smartt, KW Smith, KC Chambers, HA Flewelling, ME Huber, EA Magnier, CZ Waters, ASB Schultz, J Bulger, TB Lowe, M Willman, K Sárneczky, A Pál, JC Wheeler, A Bódi, Zs Bognár, B Csák, B Cseh, G Csörnyei, O Hanyecz, B Ignácz, Cs Kalup, R Könyves-Tóth, L Kriskovics, A Ordasi, I Rajmon, A Sódor, R Szabó, R Szakáts, G Zsidi, P Milne, JE Andrews, N Smith, C Bilinski, PJ Brown, J Nordin, SC Williams, L Galbany, J Palmerio, IM Hook, C Inserra, K Maguire, Régis Cartier, A Razza, CP Gutiérrez, JJ Hermes, JS Reding, BC Kaiser, JL Tonry, AN Heinze, L Denneau, H Weiland, B Stalder, G Barentsen, J Dotson, T Barclay, M Gully-Santiago, C Hedges, AM Cody, S Howell, J Coughlin, JE Van Cleve, J Vinícius de Miranda Cardoso, KA Larson, KM McCalmont-Everton, CA Peterson, SE Ross, LH Reedy, D Osborne, C McGinn, L Kohnert, L Migliorini, A Wheaton, B Spencer, C Labonde, G Castillo, G Beerman, K Steward, M Hanley, R Larsen, R Gangopadhyay, R Kloetzel, T Weschler, V Nystrom, J Moffatt, M Redick, K Griest, M Packard, M Muszynski, J Kampmeier, R Bjella, S Flynn, B Elsaesser
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The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope

(2018)

Authors:

DO Jones, DM Scolnic, RJ Foley, A Rest, R Kessler, PM Challis, KC Chambers, DA Coulter, KG Dettman, MM Foley, ME Huber, SW Jha, E Johnson, CD Kilpatrick, RP Kirshner, J Manuel, G Narayan, Y-C Pan, AG Riess, ASB Schultz, MR Siebert, E Berger, R Chornock, H Flewelling, EA Magnier, SJ Smartt, KW Smith, RJ Wainscoat, C Waters, M Willman
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Classification of Multiwavelength Transients with Machine Learning

(2018)

Authors:

K Sooknunan, M Lochner, Bruce A Bassett, HV Peiris, R Fender, AJ Stewart, M Pietka, PA Woudt, JD McEwen, O Lahav
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A Strong Jet Signature in the Late-time Light Curve of GW170817

Astrophysical Journal Letters American Astronomical Society 868:1 (2018) L11

Authors:

KP Mooley, DA Frail, D Dobie, E Lenc, A Corsi, K De, AJ Nayana, S Makhathini, Ian Heywood, T Murphy, DL Kaplan, P Chandra, O Smirnov, E Nakar, G Hallinan, F Camilo, R Fender, S Goedhart, P Groot, MM Kasliwal, PA Woudt

Abstract:

We present new 0.6-10 GHz observations of the binary neutron star merger GW170817 covering the period up to 300 days post-merger, taken with the Karl G. Jansky Very Large Array, the Australia Telescope Compact Array, the Giant Metrewave Radio Telescope and the MeerKAT telescope. We use these data to precisely characterize the decay phase of the late-time radio light curve. We find that the temporal decay is consistent with a power-law slope of t^-2.2, and that the transition between the power-law rise and decay is relatively sharp. Such a slope cannot be produced by a quasi-isotropic (cocoon-dominated) outflow, but is instead the classic signature of a relativistic jet. This provides strong observational evidence that GW170817 produced a successful jet, and directly demonstrates the link between binary neutron star mergers and short-hard GRBs. Using simple analytical arguments, we derive constraints on the geometry and the jet opening angle of GW170817. These results are consistent with those from our companion Very Long Baseline Interferometry (VLBI) paper, reporting superluminal motion in GW170817.
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