Publications

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118 Publications visible to you, out of a total of 118

Abstract

Not specified

Authors: N. Elias-Rosa, S. J. Brennan, S. Benetti, E. Cappellaro, A. Pastorello, A. Kozyreva, P. Lundqvist, M. Fraser, J. P. Anderson, Y. -Z. Cai, T. -W. Chen, M. Dennefeld, M. Gromadzki, C. P. Gutiérrez, N. Ihanec, C. Inserra, E. Kankare, R. Kotak, S. Mattila, S. Moran, T. E. Müller-Bravo, P. J. Pessi, G. Pignata, A. Reguitti, T. M. Reynolds, S. J. Smartt, K. Smith, L. Tartaglia, G. Valerin, T. de Boer, K. Chambers, A. Gal-Yam, H. Gao, S. Geier, P. A. Mazzali, M. Nicholl, F. Ragosta, A. Rest, O. Yaron, D. R. Young

Date Published: 1st Jun 2024

Publication Type: Journal

Abstract

Not specified

Authors: Rüdiger Pakmor, Ivo R. Seitenzahl, Ashley J. Ruiter, Stuart A. Sim, Friedrich K. Röpke, Stefan Taubenberger, Rebekka Bieri, Stéphane Blondin

Date Published: 1st Jun 2024

Publication Type: Journal

Abstract

Not specified

Authors: G. Leidi, R. Andrassy, W. Barsukow, J. Higl, P. V. F. Edelmann, F. K. Röpke

Date Published: 1st Jun 2024

Publication Type: Journal

Abstract

Not specified

Authors: F. P. Callan, S. A. Sim, C. E. Collins, L. J. Shingles, F. Lach, F. K. Röpke, R. Pakmor, M. Kromer, S. Srivastav

Date Published: 1st May 2024

Publication Type: Journal

Abstract

Not specified

Authors: Logan J. Prust, Hila Glanz, Lars Bildsten, Hagai B. Perets, Friedrich K. Röpke

Date Published: 29th Apr 2024

Publication Type: Journal

Abstract

Not specified

Authors: Alexandra Kozyreva, Javier Morán-Fraile, Alexander Holas, Vincent A. Bronner, Friedrich K. Röpke, Nikolay Pavlyuk, Alexey Mironov, Dmitry Tsvetkov

Date Published: 1st Apr 2024

Publication Type: Journal

Abstract (Expand)

We have computed a three-dimensional hydrodynamic simulation of the merger between a massive (0.4 M_⊙) helium white dwarf (He WD) and a low-mass (0.6 M_⊙) carbon-oxygen white dwarf (CO WD). Despite the low mass of the primary, the merger triggers a thermonuclear explosion as a result of a double detonation, producing a faint transient and leaving no remnant behind. This type of event could also take place during common-envelope mergers whenever the companion is a CO WD and the core of the giant star has a sufficiently large He mass. The spectra show strong Ca lines throughout the first few weeks after the explosion. The explosion only yields <0.01 M_⊙of ^56Ni, resulting in a low-luminosity SN Ia-like lightcurve that resembles the Ca-rich transients within this broad class of objects, with a peak magnitude of M_\mathrmbol ≈-15.7 mag and a rather slow decline rate of ∆m_15^\mathrmbol≈1.5 mag. Both, its lightcurve-shape and spectral appearance, resemble the appearance of Ca-rich transients, suggesting such mergers as a possible progenitor scenario for this class of events.

Authors: Javier Morán-Fraile, Alexander Holas, Friedrich K Röpke, Rüdiger Pakmor, Fabian R N Schneider

Date Published: 4th Mar 2024

Publication Type: Journal

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