How much radioactive nickel does ASASSN-15lh require?
| العنوان: | How much radioactive nickel does ASASSN-15lh require? |
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| المؤلفون: | Jacqueline den Hartogh, Alexandra Kozyreva, S. I. Blinnikov, Raphael Hirschi |
| بيانات النشر: | Oxford University Press, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, Luminosity, law.invention, law, 0103 physical sciences, QB460, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Solar mass, 010308 nuclear & particles physics, Astronomy, Astronomy and Astrophysics, Light curve, Type II supernova, Near-Earth supernova, Nickel, Supernova, chemistry, Space and Planetary Science, Hydrostatic equilibrium, Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | The discovery of the most luminous supernova ASASSN-15lh triggered a shock-wave in the supernova community. The three possible mechanisms proposed for the majority of other superluminous supernovae do not produce a realistic physical model for this particular supernova. In the present study we show the limiting luminosity available from a nickel-powered pair-instability supernova. We computed a few exotic nickel-powered explosions with a total mass of nickel up to 1500 solar masses. We used the hydrostatic configurations prepared with the GENEVA and MESA codes, and the STELLA radiative-transfer code for following the explosion of these models. We show that 1500 solar masses of radioactive nickel is needed to power a luminosity of 2x10^45 erg/s. The resulting light curve is very broad and incompatible with the shorter ASASSN-15lh time-scale. This rules out a nickel-powered origin of ASASSN-15lh. In addition, we derive a simple peak luminosity - nickel mass relation from our data, which may serve to estimate of nickel mass from observed peak luminosities. accepted for publication in MNRAS Letters |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1365-2966 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::572f15956cd0f529cb3f17b89b85c19bTest https://eprints.keele.ac.uk/2523/1/1603.00335v1.pdfTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....572f15956cd0f529cb3f17b89b85c19b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13652966 |
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