2016 Fiscal Year Research-status Report
Simulation of multicolor light curves and spectra for the first supernovae in the Universe: from superluminous to faint supernovae
| Project/Area Number |
16K17658
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TOLSTOV ALEXEY 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (30729546)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | First supernovae / photometry / identification / detectability |
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| Outline of Annual Research Achievements |
1.In 2016 year in accordance with the purpose of research I calculated multicolor light curves for a number of metal-free core-collapse supernova (SN) models to provide the indicators for finding and identification of first generation SNe. It was found that color evolution of the plateau phase is especially helpful for identification of zero- and low- metallicity SNe. The conclusion is that the multicolor light curves can be used to identify first generation SNe in the current and future transient surveys. They are also suitable for identification of the low-metallicity SNe in the nearby Universe.
2.I also calculated a set of low-metallicity massive models for superluminous supernovae, where the main radiation energy source is interaction with circumstellar medium. These successful simulations of multicolor light curves are planned to be used for analysis of detectability zero-metallicity supernovae.
3.To couple with large number of models I created numerical algorithm, which finds the best-fit model using different search criteria: multicolor light curves, evolution of photospheric velocity and temperature. This is a significant step in creation of the proposed online tool for fast identification of the Pop III SNe.
4.Several papers have been published on the research topic and the results have been presented on several international conferences and in IPMU press release.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
According to the plan for 2016 year I made the detailed modeling for SNe with specified parameters: progenitor mass, metallicity, explosion energy, 56Ni mass, envelope mass for models interacting with circumstellar envelopes. Several papers are published on this topic as it was planned. We continue working on multidimensional effects in simulations and this planned work is not finished yet. But some planned items for 2017 year are already implemented: light curve templates for core-collapse supernovae; the algorithm for finding best-fit models.
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| Strategy for Future Research Activity |
No changes
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| Causes of Carryover |
Small incurring amount in FY2016 is caused by uncertainty in transportation costs of the travels.
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| Expenditure Plan for Carryover Budget |
The remaining amount of FY2016 is planned to be included in travel expenses in FY2017 to cover transportation costs more effectively.
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Research Products
(8 results)
