A new perspective on cosmology through Supernovae Ia and Gamma Ray Bursts. (arXiv:2110.11930v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Simone_B/0/1/0/all/0/1">Biagio De Simone</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Nielson_V/0/1/0/all/0/1">Via Nielson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rinaldi_E/0/1/0/all/0/1">Enrico Rinaldi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dainotti_M/0/1/0/all/0/1">Maria Giovanna Dainotti</a>
The actual knowledge of the structure and future evolution of our universe is
based on the use of cosmological models, which can be tested through the
so-called ‘probes’, namely astrophysical phenomena, objects or structures with
peculiar properties that can help to discriminate among different cosmological
models. Among all the existing probes, of particular importance are the
Supernovae Ia (SNe Ia) and the Gamma Ray Bursts (GRBs): the former are
considered among the best standard candles so far discovered but suffer from
the fact that can be observed until redshift $z=2.26$, while the latter are
promising standardizable candles which have been observed up to $z=9.4$,
surpassing even the farthest quasar known to date, which is at $z=7.64$. The
standard candles can be used to test the cosmological models and to give the
expected values of cosmological parameters, in particular the Hubble constant
value. The Hubble constant is affected by the so-called say{Hubble constant
tension}, a discrepancy in more than 4 $sigma$ between its value measured with
local probes and its value measured through the cosmological probes. The
increase in the number of observed SNe Ia, as well as the future
standardization of GRBs through their correlations, will surely be of help in
alleviating the Hubble constant tension and in explaining the structure of the
universe at higher redshifts. A promising class of GRBs for future
standardization is represented by the GRBs associated with Supernovae Ib/c,
since these present features similar to the SNe Ia class and obey a tight
correlation between their luminosity at the end of the plateau emission in
X-rays and the time at the end of the plateau in the rest-frame.
The actual knowledge of the structure and future evolution of our universe is
based on the use of cosmological models, which can be tested through the
so-called ‘probes’, namely astrophysical phenomena, objects or structures with
peculiar properties that can help to discriminate among different cosmological
models. Among all the existing probes, of particular importance are the
Supernovae Ia (SNe Ia) and the Gamma Ray Bursts (GRBs): the former are
considered among the best standard candles so far discovered but suffer from
the fact that can be observed until redshift $z=2.26$, while the latter are
promising standardizable candles which have been observed up to $z=9.4$,
surpassing even the farthest quasar known to date, which is at $z=7.64$. The
standard candles can be used to test the cosmological models and to give the
expected values of cosmological parameters, in particular the Hubble constant
value. The Hubble constant is affected by the so-called say{Hubble constant
tension}, a discrepancy in more than 4 $sigma$ between its value measured with
local probes and its value measured through the cosmological probes. The
increase in the number of observed SNe Ia, as well as the future
standardization of GRBs through their correlations, will surely be of help in
alleviating the Hubble constant tension and in explaining the structure of the
universe at higher redshifts. A promising class of GRBs for future
standardization is represented by the GRBs associated with Supernovae Ib/c,
since these present features similar to the SNe Ia class and obey a tight
correlation between their luminosity at the end of the plateau emission in
X-rays and the time at the end of the plateau in the rest-frame.
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