Explosive Nucleosynthesis in Aspherical Hypernova Explosions and Late-Time Spectra of SN 1998bw

By K. Maeda, Takayoshi Nakamura, Ken'ichi Nomoto, P. Mazzali, Ferdinando Patat, I. Hachisu. 2000

199 citations recorded by the source corpus.

Aspherical explosion models for the hypernova (hyperenergetic supernova) SN 1998bw are presented. Nucleosynthesis in aspherical explosions is examined with a two-dimensional hydrodynamical code and a detailed nuclear reaction network. Aspherical explosions lead to a strong α-rich freezeout, thus enhancing the abundance ratios [44Ca, 48Ti, 64Zn/Fe] in the ejecta. The nebular line profiles of the Fe-dominated blend near 5200 Å and of [O I] 6300, 6363 Å are calculated and compared with the observed late-time spectra of SN 1998bw. Compared with the spherical model, the unusual features of the observed nebular spectra can be better explained if SN 1998bw is a strongly aspherical explosion with a kinetic energy of ~1052 ergs viewed from near the jet direction.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/fdecba3cc3aee5860aec7ad78d3fd81f5e4300a1

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In Astronomy and Astrophysics

1. B. Metzger
2. S. Smartt
3. Stan Woosley
4. E. Berger
5. E. Quataert
6. N. Smith
7. T. Thompson
8. Bing Zhang

In Nuclear and High Energy Physics

1. B. Metzger
2. S. Smartt
3. Stan Woosley
4. E. Quataert
5. T. Thompson
6. E. Berger
7. Nozomu Tominaga
8. J. C. Wheeler

Citations in the corpus

• NUCLEOSYNTHESIS IN TWO-DIMENSIONAL DELAYED DETONATION MODELS OF TYPE Ia SUPERNOVA EXPLOSIONS (2010, methodology): “The method was first applied to corecollapse supernovae (Nagataki et al. 1997; Maeda et al. 2002; Maeda & Nomoto 2003), and has become popular in the field thanks to its simplicity and its applicability to multi-dimensional problems (e.g., Travaglio et al. 2004b).”
• Millisecond Magnetar Birth Connects FRB 121102 to Superluminous Supernovae and Long-duration Gamma-Ray Bursts (2017, methodology): “For simplicity we consider that the ejecta is composed entirely of oxygen (Maeda et al. 2002).”
• Spectropolarimetry of Supernovae (2008, background): “J., 524, 262 Maeda & Nomoto(2003)Maeda, K., & Nomoto, K. 2003, ApJ, 598, 1163 Maeda et al.(2002)Maeda, K., Nakamura, T., Nomoto, K., Mazzali, P. A., Patat, F., & Hachisu, I. 2002, ApJ, 565, 405 Marietta, Burrows & Fryxell(2000)Marietta, E., Burrows, A., & Fryxell, B. 2000, ApJs, 128, 615 Mazzali et…”
• SN 2003lw and GRB 031203: A Bright Supernova for a Faint Gamma-Ray Burst (2004, unknown): “GRB 031203, together with GRB 980425 at z = 0.085, was a very dim event, perhaps a jet observed far from its axis (e.g. Maeda et al., 2002; Yamazaki, Yonetoku & Nakamura, 2003).”
• Magnetized relativistic jets and long-duration GRBs from magnetar spin-down during core-collapse supernovae (2009, methodology): “…between the magnetar-driven jet and the stellar envelope; we largely confirm previous studies on nucleosynthesis in jets and asymmetric SNe, which were based on parametrized models for the origin of the jet/asymmetry (Maeda et al. 2002; Nagataki et al. 2003; Nagataki, Mizuta & Sato 2006).”
• Nucleosynthesis of Zinc and Iron Peak Elements in Population III Type II Supernovae: Comparison with Abundances of Very Metal Poor Halo Stars (2001, background): “This “mixing and fall-back” effect may also be effectively realized in non-spherical explosions accompanying energetic jets (e.g., Maeda et al. 2002; Khokhlov et al. 1999; Nagataki et al. 1997).”
• Nucleosynthesis in Stars and the Chemical Enrichment of Galaxies (2013, background): “Hypernovae are also characterized by asphericity according to observations of polarization and emission-line features (e.g., Maeda et al. 2002, Wang et al. 2002).”
• The Observer's Guide to the Gamma-Ray Burst-Supernova Connection (2016, background): “References [47, 110, 111] investigated the nebular spectra of SN 1998bw, which exhibited properties that could not be explained with spherical symmetry.”
• Nebular emission-line profiles of Type Ib/c supernovae - Probing the ejecta asphericity (2009, background): “From this geometry a strong viewing-angle dependence of nebular line profiles was obtained (Maeda et al. 2002).”
• A Two-Component Model for the Light Curves of Hypernovae (2003, methodology): “Maeda et al. (2002) indeed found that a jet-driven explosion model can explain the unusual properties of the nebular spectra of SN 1998bw, namely, the presence of iron at higher velocities than oxygen.”
• SN 2004aw: confirming diversity of Type Ic supernovae (2006, methodology): “Following the arguments of Maeda et al. (2002), Tomita et al. (2006) and Mazzali et al. (in preparation), the observed line profiles require both explosions to be strongly asymmetric, but maybe the jet was too strongly contaminated by baryons to trigger a GRB (Tominaga et al. 2004).”
• The Type Ic Hypernova SN 2003dh/GRB 030329 (2003, background): “It could be attributed to a jetlike asphericity in the explosion (Maeda et al. 2002; Maeda & Nomoto 2003; Woosley & Heger 2003).”
• Supernova Nucleosynthesis in Population III 13-50 M☉ Stars and Abundance Patterns of Extremely Metal-poor Stars (2007, background): “However, such one-dimensional hydrodynamic determinations may not be relevant, because SN explosions are found to be aspherical (e.g., Kawabata et al. 2002; Leonard et al. 2002; Wang et al. 2002, 2003;Maeda et al. 2002, 2006a, 2006b;Mazzali et al. 2005;Chugai et al. 2005).”
• On the nature of supernovae Ib and Ic (2012, background): “…asymmetry of the shock in an explosion through the neutrino mechanism (Scheck et al. 2006; Marek & Janka 2009) or the magnetorotational mechanism (LeBlanc & Wilson 1970; Bisnovatyi-Kogan, Popov & Samokhin 1976; Khokhlov et al. 1999; Maeda et al. 2002; Burrows et al. 2007; Dessart et al. 2008).”
• The Unique Type Ib Supernova 2005bf at Nebular Phases: A Possible Birth Event of a Strongly Magnetized Neutron Star (2007, background): “In the case of SN 2003jd, it was basically symmetric with respect to the rest wavelength (i.e., no velocity shift), so that it was most naturally interpreted as oxygen distributed in a disk viewed from the equator (Maeda et al. 2002).”
• The Type Ic Hypernova SN 2002ap (2002, background): “Signatures of asymmetry were detected in SN 1998bw, such as polarization (Patat et al. 2001) and peculiar nebular line profiles (Mazzali et al. 2001; Maeda et al. 2002).”
• The Broad-lined Type Ic SN 2003jd (2007, background): “Although asphericity may be present in most, or possibly all corecollapse SNe, it is not clear that low-energy events can be as highly aspherical as either SN 2003jd or SN 1998bw (Mazzali et al. 2001; Maeda et al. 2002).”