Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strongly lensed SN Refsdal: refining time delays based on the supernova
  explosion models   We explore the properties of supernova (SN) "Refsdal" - the first discovered
gravitationally lensed SN with multiple images. A large magnification provided
by the galactic-scale lens, augmented by the cluster lens, gave us a unique
opportunity to perform a detailed modelling of a distant SN at z=1.5.
  We present results of radiation hydrodynamics modelling of SN Refsdal.
According to our calculations, the SN Refsdal progenitor is likely to be a more
massive and energetic version of SN 1987A, i.e. a blue supergiant star with the
following parameters: the progenitor radius $R_0 = (50 \pm 1) R_{\odot}$, the
total mass $M_{tot}= (25\pm 2) M_{\odot}$, the radioactive $^{56}$Ni mass
$M_{^{56}\mathrm{Ni}} = (0.26 \pm 0.05) \,M_{\odot}$, and the total energy
release $E_{burst}=(4.7 \pm 0.8)\times10^{51}$ erg. Reconstruction of SN light
curves allowed us to obtain time delays and magnifications for the images S2-S4
relative to S1 with higher accuracy than previous template-based estimates of
Rodney \& et al. (2016). The measured time delays are $\Delta t_{S2-S1} =
9.5^{+2.6}_{-2.7} $ days, $\Delta t_{S3-S1} = 4.2^{+2.3}_{-2.3} $ days, and
$\Delta t_{S4-S1} = 30^{+7.8}_{-8.2} $ days. The obtained magnification ratios
are $\mu_{S2/S1}= 1.14 \pm 0.02$, $\mu_{S3/S1} = 1.01 \pm 0.02 $, and
$\mu_{S4/S1} = 0.35\pm 0.02$. We estimate the Hubble constant $H_0 =
68.6^{+13.6}_{-9.7}$ km s$^{-1}$ Mpc$^{-1}$ via re-scaling the time delays
predicted by different lens models to match the values obtained in this work.
With more photometric data on the fifth image SX, we will be able to further
refine the time delay and magnification estimates for SX and obtain competitive
constraints on $H_0$.

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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: cs
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an