%0 Generic %1 bolton2022hints %A Bolton, James S. %A Caputo, Andrea %A Liu, Hongwan %A Viel, Matteo %D 2022 %K library %T Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$\alpha$ forest %U http://arxiv.org/abs/2206.13520 %X Recent work has suggested that an additional $6.9 \, eV$ per baryon of heating in the intergalactic medium is needed to reconcile hydrodynamical simulations with Lyman-$\alpha$ forest absorption line widths at redshift $z0.1$. Resonant conversion of dark photon dark matter into low frequency photons is a viable source of such heating. We perform the first hydrodynamical simulations including dark photon heating and show that dark photons with mass $m_A'810^-14\rm\,eV\,c^-2$ and kinetic mixing $510^-15$ can alleviate the heating excess. A prediction of this model is a non-standard thermal history for underdense gas at $z 3$.

@misc{bolton2022hints, abstract = {Recent work has suggested that an additional $\lesssim 6.9 \rm{\, eV}$ per baryon of heating in the intergalactic medium is needed to reconcile hydrodynamical simulations with Lyman-$\alpha$ forest absorption line widths at redshift $z\simeq 0.1$. Resonant conversion of dark photon dark matter into low frequency photons is a viable source of such heating. We perform the first hydrodynamical simulations including dark photon heating and show that dark photons with mass $m_{A'}\sim 8\times 10^{-14}\rm\,eV\,c^{-2}$ and kinetic mixing $\epsilon \sim 5\times 10^{-15}$ can alleviate the heating excess. A prediction of this model is a non-standard thermal history for underdense gas at $z \gtrsim 3$.}, added-at = {2022-06-29T11:31:14.000+0200}, author = {Bolton, James S. and Caputo, Andrea and Liu, Hongwan and Viel, Matteo}, biburl = {https://www.bibsonomy.org/bibtex/29673b12efffc3255233ec3d02eeadaf2/gpkulkarni}, description = {Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$\alpha$ forest}, interhash = {d98a9bc14c781ee28bae265cfeca2764}, intrahash = {9673b12efffc3255233ec3d02eeadaf2}, keywords = {library}, note = {cite arxiv:2206.13520Comment: 5+1 pages, 2+1 figures}, timestamp = {2022-06-29T11:31:14.000+0200}, title = {Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$\alpha$ forest}, url = {http://arxiv.org/abs/2206.13520}, year = 2022 }