Supernovae and superbursts by dark matter clumps
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866909223706689536 |
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| author | Raj, Nirmal |
| author_facet | Raj, Nirmal |
| contents | Cosmologies in which dark matter clumps strongly on small scales are unfavorable to terrestrial detectors that are as yet unexposed to the clumps. I show that sub-hectometer clumps could trigger thermonuclear runaways by scattering on nuclei in white dwarf cores (carbon and oxygen) and neutron star oceans (carbon), setting off Type Ia-like supernovae and x-ray superbursts respectively. I consider two scenarios: ``dark clusters" that are essentially microhalos, and ``long-range dark nuggets", essentially macroscopic composites, with long-range Yukawa baryonic interactions that source the energy for igniting explosions. I constrain dark clusters weighing between the Planck mass and asteroid masses, and long-range dark nuggets over a wider mass range spanning forty orders of magnitude. These limits greatly complement searches I had co-proposed in 2109.04582 for scattering interactions of dark clumps in neutron stars, cosmic rays, and pre-historic minerals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_14981 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Supernovae and superbursts by dark matter clumps Raj, Nirmal High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Experiment Cosmologies in which dark matter clumps strongly on small scales are unfavorable to terrestrial detectors that are as yet unexposed to the clumps. I show that sub-hectometer clumps could trigger thermonuclear runaways by scattering on nuclei in white dwarf cores (carbon and oxygen) and neutron star oceans (carbon), setting off Type Ia-like supernovae and x-ray superbursts respectively. I consider two scenarios: ``dark clusters" that are essentially microhalos, and ``long-range dark nuggets", essentially macroscopic composites, with long-range Yukawa baryonic interactions that source the energy for igniting explosions. I constrain dark clusters weighing between the Planck mass and asteroid masses, and long-range dark nuggets over a wider mass range spanning forty orders of magnitude. These limits greatly complement searches I had co-proposed in 2109.04582 for scattering interactions of dark clumps in neutron stars, cosmic rays, and pre-historic minerals. |
| title | Supernovae and superbursts by dark matter clumps |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2306.14981 |