Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of fission-ignited supernova properties with uranium
  enrichment   Type-Ia supernovae (SN Ia) are powerful stellar explosions that provide
important distance indicators in cosmology. There is significant tension
between values of the Hubble constant (expansion rate of the universe)
determined from SN Ia and from other data. Recently, we proposed a new SN Ia
mechanism that involves a nuclear fission chain reaction in an isolated white
dwarf [PRL 126, 1311010]. We find the average mass of an exploding star
decreases with increasing enrichment f_5 -- the fraction of uranium that is the
isotope U-235. As a result, the average SN Ia luminosity decreases with
increasing f_5. Furthermore, f_5 is likely higher in the host galaxies of SN Ia
observed at large redshift $z$ because of younger galaxy ages. This change of
f_5 leads to the evolution of SN Ia properties with redshift. If f_5 increases
with redshift this results in an increased SN Ia rate, but a lower average SN
Ia luminosity.

9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin