Article
Astronomy & Astrophysics
Ko Nakamura, Tomoya Takiwaki, Kei Kotake
Summary: In this study, a self-consistent, non-rotating core-collapse supernova simulation is conducted in three spatial dimensions using a binary evolution progenitor model of SN 1987A. The simulation successfully reproduces several observational constraints of SN 1987A, including the evolution, mass, and position on the Hertzsprung-Russell diagram at collapse. The simulation also predicts the formation of a newly born neutron star with specific gravitational mass and spin period. However, the simulation results show some discrepancies with the observed values, suggesting the need for further improvements in the models.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Danfeng Xiang, Xiaofeng Wang, Xinghan Zhang, Hanna Sai, Jujia Zhang, Thomas G. Brink, Alexei Filippenko, Jun Mo, Tianmeng Zhang, Zhihao Chen, Luc Dessart, Zhitong Li, Shengyu Yan, Sergei Blinnikov, Liming Rui, E. Baron, J. M. DerKacy
Summary: We present extensive observations and analysis for the nearby SN 1987A-like peculiar Type II supernova (SN) 2018hna. The observations cover phases extending to >500 days after the explosion, making it one of the best-observed SN II of this subtype. The analysis suggests that SN 2018hna has a higher photospheric temperature and a smaller progenitor radius compared to SN 1987A. By fitting the bolometric light curve with hydrodynamical models, the study estimates the ejecta mass, kinetic energy, and Ni-56 mass of SN 2018hna. The study also discusses the possible mechanisms and scenarios for the formation of SN 2018hna.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
P. Armstrong, B. E. Tucker, A. Rest, R. Ridden-Harper, Y. Zenati, A. L. Piro, S. Hinton, C. Lidman, S. Margheim, G. Narayan, E. Shaya, P. Garnavich, D. Kasen, V. Villar, A. Zenteno, I Arcavi, M. Drout, R. J. Foley, J. Wheeler, J. Anais, A. Campillay, D. Coulter, G. Dimitriadis, D. Jones, C. D. Kilpatrick, N. Munoz-Elgueta, C. Rojas-Bravo, J. Vargas-Gonzalez, J. Bulger, K. Chambers, M. Huber, T. Lowe, E. Magnier, B. J. Shappee, S. Smartt, K. W. Smith, T. Barclay, G. Barentsen, J. Dotson, M. Gully-Santiago, C. Hedges, S. Howell, A. Cody, K. Auchettl, A. Bodi, Zs Bognar, J. Brimacombe, P. Brown, B. Cseh, L. Galbany, D. Hiramatsu, T. W-S Holoien, D. A. Howell, S. W. Jha, R. Konyves-Toth, L. Kriskovics, C. McCully, P. Milne, J. Munoz, Y. Pan, A. Pal, H. Sai, K. Sarneczky, N. Smith, A. Sodor, R. Szabo, R. Szakats, S. Valenti, J. Vinko, X. Wang, K. Zhang, G. Zsidi
Summary: SN 2017jgh, discovered by Pan-STARRS during the Kepler/K2 mission, likely had a progenitor yellow supergiant with an envelope radius between 50-290 solar radii and an envelope mass between 0-1.7 solar masses. The shock velocity of SN 2017jgh was estimated to be between 7500-10,300 km/s. The study also showed that estimates of progenitor properties through analytical models may have larger systematic uncertainties than previously calculated.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Yi Yang, Dietrich Baade, Peter Hoeflich, Lifan Wang, Aleksandar Cikota, Ting-Wan Chen, Jamison Burke, Daichi Hiramatsu, Craig Pellegrino, D. Andrew Howell, Curtis McCully, Stefano Valenti, Steve Schulze, Avishay Gal-Yam, Lingzhi Wang, Alexei Filippenko, Keiichi Maeda, Mattia Bulla, Yuhan Yao, Justyn R. Maund, Ferdinando Patat, Jason Spyromilio, J. Craig Wheeler, Arne Rau, Lei Hu, Wenxiong Li, Jennifer E. Andrews, Lluis Galbany, David J. Sand, Melissa Shahbandeh, Eric Y. Hsiao, Xiaofeng Wang
Summary: This article describes a rare type of supernova explosion characterized by strong interaction between the ejected matter and surrounding circumstellar matter. The researchers conducted polarimetric observations of SN 2018evt and found that the progenitor star's mass loss was non-spherical. The study also showed that the circumstellar environment of SN 2018evt has been significantly enriched at a rate of approximately 0.1 solar masses per year.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
G. P. Srinivasaragavan, I. Sfaradi, J. Jencson, K. De, A. Horesh, M. M. Kasliwal, S. Tinyanont, M. Hankins, S. Schulze, M. C. B. Ashley, M. J. Graham, V. Karambelkar, R. Lau, A. A. Mahabal, A. M. Moore, E. O. Ofek, Y. Sharma, J. Sollerman, J. Soon, R. Soria, T. Travouillon, R. Walters
Summary: In this study, we analyzed the nearby Type IIP supernova SN 2020qmp discovered by the Palomar Gattini-IR survey in the galaxy UGC07125. Through multiwavelength observations, we gained insights into stellar progenitors, CSM interactions in CCSNe, and the advantages of NIR surveys for detecting dust-obscured CCSNe. The results provide valuable information for understanding the properties of CCSNe and highlight the importance of follow-up observations in advancing our knowledge of these events.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
T. Kangas, C. Fransson, J. Larsson, K. France, R. A. Chevalier, R. P. Kirshner, P. Lundqvist, S. Mattila, J. Sollerman, V. P. Utrobin
Summary: This study presents spectroscopy of the ejecta of SN 1987A, revealing the morphology and evolution of emission lines. The Mg II line shows a blueshift and a significant increase in brightness since 1999. It is found that thermal excitation and Ly alpha fluorescence are the dominant power sources for the ultraviolet and infrared Mg II lines, respectively. This research also examines the spectra of hotspots outside the equatorial ring, providing insights into the interaction of fast ejecta and a clumpy, slowly moving outflow.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Benjamin Scully, Christopher D. Matzner, Almog Yalinewich
Summary: Researchers simulated aspherical explosions using the HUJI-RICH moving-mesh hydrodynamics code and analyzed them based on diffusion measures. They found evidence for a new class of transient that accompanies the explosion of an aspherical compact supernova, where colliding ejecta outside the star can release a photon flash. The analysis of an X-ray transient associated with supernova SN 2008D supports the possibility of collision-induced flashes in a narrow range of asphericity.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Claes Fransson, Jesper Sollerman, Nora L. Strotjohann, Sheng Yang, Steve Schulze, Cristina Barbarino, Erik C. Kool, Eran O. Ofek, Arien Crellin-Quick, Kishalay De, Andrew J. Drake, Christoffer Fremling, Avishay Gal-Yam, Anna Y. Q. Ho, Mansi M. Kasliwal
Summary: We present observations of the Type IIn supernova SN 2019zrk, which shows a precursor and prominent undulations in the light curve. The interaction with a dense circumstellar medium dominates both the light curve and spectra.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
M. Pursiainen, G. Leloudas, E. Paraskeva, A. Cikota, J. P. Anderson, C. R. Angus, S. Brennan, M. Bulla, E. Camacho-Iniguez, P. Charalampopoulos, T-W Chen, M. Delgado Mancheno, M. Fraser, C. Frohmaier, L. Galbany, C. P. Gutierrez, M. Gromadzki, C. Inserra, J. Maund, T. E. Mueller-Bravo, S. Munoz Torres, M. Nicholl, F. Onori, F. Patat, P. J. Pessi, R. Roy, J. Spyromilio, P. Wiseman, D. R. Young
Summary: We present a spectroscopic analysis of the nearby Type I superluminous supernova (SLSN-I), SN 2018bsz, which exhibits unique features in its photometric and spectroscopic evolutions. The spectroscopic properties of SN 2018bsz closely resemble SLSNe-I, with distinct emission components in the H alpha line and other hydrogen lines, indicating aspherical circumstellar material (CSM) with several emitting regions. The presence of CSM suggests an uncommon evolutionary path or involvement of a binary companion. The study provides insights into the understanding of SLSNe-I and their formation mechanisms.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Noam Soker
Summary: The author analyzes the properties of the transient event SN 2019zrk and concludes that jets were the main source of energy for various stages of the event. They discuss the pre-explosion outburst, the interaction between the ejected matter and circumstellar matter, and the post-explosion bump in the light curve. They propose a jet-driven model to explain the bump. The author emphasizes the importance of considering jet-powering in the analysis of different types of transients.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Szanna Zsiros, Andrea P. Nagy, Tamas Szalai
Summary: We conducted an extensive analysis of the late-time mid-IR evolution of Type IIb SN 1993J, revealing a late-time mid-IR excess that can be described by the presence of two-component local dust. The source of these components could be either newly formed dust grains or heating of pre-existing dust via ongoing circumstellar matter interaction.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Jun Li, Jian Gao, Biwei Jiang, Zesen Lin
Summary: The unusual extinction curves of SN 2010j1 were studied by fitting dust models with different compositions and grain size distributions. It was found that a silicate-graphite mixture dust model with exponentially cut-off power-law size distributions could reproduce the extinction curves well. The best-fitting models suggest that the dust grains around SN 2010j1 are likely composed of small-sized astronomical silicate grains and micron-sized graphite grains. The dust mass around SN 2010j1 was also found to increase with time.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
T. Kangas, A. Ahola, C. Fransson, J. Larsson, P. Lundqvist, S. Mattila, B. Leibundgut
Summary: We used adaptive optics imaging and integral field spectroscopy to study the NIR evolution of SN 1987A's equatorial ring. The NIR flux and morphology were monitored over time as groundwork for future observations. Differences in ring structure and flux at different wavelengths were analyzed to understand the physical processes. The results showed similarities between NIR and optical evolution, with skewed morphology towards the west side of the ring since 2010. The NIR continuum emission expanded more slowly than the MIR dust emission, indicating a different source.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
T. Nagao, H. Kuncarayakti, K. Maeda, T. Moore, A. Pastorello, S. Mattila, K. Uno, S. J. Smartt, S. A. Sim, L. Ferrari, L. Tomasella, J. P. Anderson, T. -W. Chen, L. Galbany, H. Gao, M. Gromadzki, C. P. Gutierrez, C. Inserra, E. Kankare, E. A. Magnier, T. E. Mueller-Bravo, A. Reguitti, D. R. Young
Summary: This study presents photometric and spectroscopic observations of the Type Icn supernova (SN) 2021ckj. The observations reveal similar photometric properties and composition to other Type Icn SNe, indicating possible aspherical ejecta and interaction with circumstellar matter. The results of this study shed light on the evolution and formation mechanisms of supernovae.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
S. Yang, J. Sollerman, T-W Chen, E. C. Kool, R. Lunnan, S. Schulze, N. Strotjohann, A. Horesh, M. Kasliwal, T. Kupfer, A. A. Mahabal, F. J. Masci, P. Nugent, D. A. Perley, R. Riddle, B. Rusholme, Y. Sharma
Summary: The observations of SN 2020faa show great similarity to the behavior of iPTF14hls during the first 6 months, allowing for a forecasting of the former and reflection on the less well observed early evolution of the latter.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
E. E. E. Gall, J. Polshaw, R. Kotak, A. Jerkstrand, B. Leibundgut, D. Rabinowitz, J. Sollerman, M. Sullivan, S. J. Smartt, J. P. Anderson, S. Benetti, C. Baltay, U. Feindt, M. Fraser, S. Gonzalez-Gaitan, C. Inserra, K. Maguire, R. McKinnon, S. Valenti, D. Young
ASTRONOMY & ASTROPHYSICS
(2015)
Article
Astronomy & Astrophysics
S. Dhawan, B. Leibundgut, J. Spyromilio, K. Maguire
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2015)
Article
Astronomy & Astrophysics
H. Shariff, S. Dhawan, X. Jiao, B. Leibundgut, R. Trotta, D. A. van Dyk
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2016)
Article
Astronomy & Astrophysics
Suhail Dhawan, B. Leibundgut, J. Spyromilio, S. Blondin
ASTRONOMY & ASTROPHYSICS
(2017)
Article
Astronomy & Astrophysics
E. E. E. Gall, R. Kotak, B. Leibundgut, S. Taubenberger, W. Hillebrandt, M. Kromer, W. S. Burgett, K. Chambers, H. Flewelling, M. E. Huber, N. Kaiser, R. P. Kudritzki, E. A. Magnier, N. Metcalfe, K. Smith, J. L. Tonry, R. J. Wainscoat, C. Waters
ASTRONOMY & ASTROPHYSICS
(2018)
Article
Astronomy & Astrophysics
Suhail Dhawan, Saurabh W. Jha, Bruno Leibundgut
ASTRONOMY & ASTROPHYSICS
(2018)
Review
Astronomy & Astrophysics
B. Leibundgut, M. Sullivan
SPACE SCIENCE REVIEWS
(2018)
Article
Astronomy & Astrophysics
E. E. E. Gall, R. Kotak, B. Leibundgut, S. Taubenberger, W. Hillebrandt, M. Kromer, W. S. Burgett, K. Chambers, H. Flewelling, M. E. Huber, N. Kaiser, R. P. Kudritzki, E. A. Magnier, N. Metcalfe, K. Smith, J. L. Tonry, R. J. Wainscoat, C. Waters
ASTRONOMY & ASTROPHYSICS
(2018)
Article
Astronomy & Astrophysics
Suhail Dhawan, Saurabh W. Jha, Bruno Leibundgut
ASTRONOMY & ASTROPHYSICS
(2018)
Article
Astronomy & Astrophysics
Barnabas Barna, Tamas Szalai, Wolfgang E. Kerzendorf, Markus Kromer, Stuart A. Sim, Mark R. Magee, Bruno Leibundgut
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2018)
Article
Astronomy & Astrophysics
S. Dhawan, A. Floers, B. Leibundgut, K. Maguire, W. Kerzendorf, S. Taubenberger, M. H. Van Kerkwijk, J. Spyromilio
ASTRONOMY & ASTROPHYSICS
(2018)
Article
Astronomy & Astrophysics
J. Larsson, J. Spyromilio, C. Fransson, R. Indebetouw, M. Matsuura, F. J. Abellan, P. Cigan, H. Gomez, B. Leibundgut
ASTROPHYSICAL JOURNAL
(2019)
Article
Astronomy & Astrophysics
Dennis Alp, Josefin Larsson, Claes Fransson, Remy Indebetouw, Anders Jerkstrand, Antero Ahola, David Burrows, Peter Challis, Phil Cigan, Aleksandar Cikota, Robert P. Kirshner, Jacco Th. van Loon, Seppo Mattila, C. -Y. Ng, Sangwook Park, Jason Spyromilio, Stan Woosley, Maarten Baes, Patrice Bouchet, Roger Chevalier, Kari A. Frank, B. M. Gaensler, Haley Gomez, Hans-Thomas Janka, Bruno Leibundgut, Peter Lundqvist, Jon Marcaide, Mikako Matsuura, Jesper Sollerman, George Sonneborn, Lister Staveley-Smith, Giovanna Zanardo, Michael Gabler, Francesco Taddia, J. Craig Wheeler
ASTROPHYSICAL JOURNAL
(2018)
Article
Astronomy & Astrophysics
J. Larsson, C. Fransson, J. Spyromilio, B. . Leibundgut, P. Challis, R. A. Chevalier, K. France, A. Jerkstrand, R. P. Kirshner, P. Lundqvist, M. Matsuura, R. McCray, N. Smith, J. Sollerman, P. Garnavich, K. Heng, S. Lawrence, S. Mattila, K. Migotto, G. Sonneborn, F. Taddia, J. C. Wheeler
ASTROPHYSICAL JOURNAL
(2016)
Article
Astronomy & Astrophysics
Claes Fransson, Josefin Larsson, Jason Spyromilio, Bruno Leibundgut, Richard McCray, Anders Jerkstrand
ASTROPHYSICAL JOURNAL LETTERS
(2016)