Pulsars, transients and relativistic astrophysics

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The evolution of luminous red nova AT 2017jfs in NGC 4470⋆

Astronomy & Astrophysics EDP Sciences 625 (2019) l8

Authors:

A Pastorello, T-W Chen, Y-Z Cai, A Morales-Garoffolo, Z Cano, E Mason, EA Barsukova, S Benetti, M Berton, S Bose, F Bufano, E Callis, G Cannizzaro, R Cartier, Ping Chen, Subo Dong, S Dyrbye, N Elias-Rosa, A Flörs, M Fraser, S Geier, VP Goranskij, DA Kann, H Kuncarayakti, F Onori, A Reguitti, T Reynolds, IR Losada, A Sagués Carracedo, T Schweyer, SJ Smartt, AM Tatarnikov, AF Valeev, C Vogl, T Wevers, A de Ugarte Postigo, L Izzo, C Inserra, E Kankare, K Maguire, KW Smith, B Stalder, L Tartaglia, CC Thöne, G Valerin, DR Young
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Detecting Supermassive Black Hole-induced Binary Eccentricity Oscillations with LISA

ASTROPHYSICAL JOURNAL LETTERS American Astronomical Society 875:2 (2019) ARTN L31

Authors:

Bao-Minh Hoang, Smadar Naoz, Bence Kocsis, Will M Farr, Jessica McIver

Abstract:

Stellar-mass black hole binaries (BHBs) near supermassive black holes (SMBH) in galactic nuclei undergo eccentricity oscillations due to gravitational perturbations from the SMBH. Previous works have shown that this channel can contribute to the overall BHB merger rate detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo Interferometer. Significantly, the SMBH gravitational perturbations on the binary's orbit may produce eccentric BHBs which are expected to be visible using the upcoming Laser Interferometer Space Antenna (LISA) for a large fraction of their lifetime before they merge in the LIGO/Virgo band. For a proof-of-concept, we show that the eccentricity oscillations of these binaries can be detected with LISA for BHBs in the local universe up to a few Mpcs, with observation periods shorter than the mission lifetime, thereby disentangling this merger channel from others. The approach presented here is straightforward to apply to a wide variety of compact object binaries with a tertiary companion.
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Evidence for Late-stage Eruptive Mass-loss in the Progenitor to SN2018gep, a Broad-lined Ic Supernova: Pre-explosion Emission and a Rapidly Rising Luminous Transient

(2019)

Authors:

Anna YQ Ho, Daniel A Goldstein, Steve Schulze, David K Khatami, Daniel A Perley, Mattias Ergon, Avishay Gal-Yam, Alessandra Corsi, Igor Andreoni, Cristina Barbarino, Eric C Bellm, Nadia Blagorodnova, Joe S Bright, Eric Burns, S Bradley Cenko, Virginia Cunningham, Kishalay De, Richard Dekany, Alison Dugas, Rob P Fender, Claes Fransson, Christoffer Fremling, Adam Goldstein, Matthew J Graham, David Hale, Assaf Horesh, Tiara Hung, Mansi M Kasliwal, N Paul M Kuin, Shri R Kulkarni, Thomas Kupfer, Ragnhild Lunnan, Frank J Masci, Chow-Choong Ngeow, Peter E Nugent, Eran O Ofek, Maria T Patterson, Glen Petitpas, Ben Rusholme, Hanna Sai, Itai Sfaradi, David L Shupe, Jesper Sollerman, Maayane T Soumagnac, Yutaro Tachibana, Francesco Taddia, Richard Walters, Xiaofeng Wang, Yuhan Yao, Xinhan Zhang
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The tidal disruption event AT2017eqx: spectroscopic evolution from hydrogen rich to poor suggests an atmosphere and outflow

(2019)

Authors:

M Nicholl, PK Blanchard, E Berger, S Gomez, R Margutti, KD Alexander, J Guillochon, J Leja, R Chornock, B Snios, K Auchettl, AG Bruce, P Challis, DJ D'Orazio, MR Drout, T Eftekhari, RJ Foley, O Graur, CD Kilpatrick, A Lawrence, AL Piro, C Rojas-Bravo, NP Ross, P Short, SJ Smartt, KW Smith, B Stalder
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On the Ca-strong 1991bg-like type Ia supernova 2016hnk: evidence for a Chandrasekhar-mass explosion

(2019)

Authors:

Lluís Galbany, Chris Ashall, Peter Hoeflich, Santiago González-Gaitán, Stefan Taubenberger, Maximilian Stritzinger, Eric Y Hsiao, Paolo Mazzali, Eddie Baron, Stéphane Blondin, Subhash Bose, Mattia Bulla, Jamison F Burke, Christopher R Burns, Régis Cartier, Ping Chen, Massimo Della Valle, Tiara R Diamond, Claudia P Gutiérrez, Jussi Harmanen, Daichi Hiramatsu, TW-S Holoien, Griffin Hosseinzadeh, D Andrew Howell, Yiwen Huang, Cosimo Inserra, Thomas de Jaeger, Saurabh W Jha, Tuomas Kangas, Markus Kromer, Joseph D Lyman, Kate Maguire, George Howie Marion, Dan Milisavljevic, Simon J Prentice, Alessandro Razza, Thomas M Reynolds, David J Sand, Benjamin J Shappee, Rohit Shekhar, Stephen J Smartt, Keivan G Stassun, Mark Sullivan, Stefano Valenti, Steven Villanueva, Xiaofeng Wang, J Craig Wheeler, Qian Zhai, Jujia Zhang
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