Solar Axions from Nuclear Transitions
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866910250294050816 |
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| author | Kumar, Tanmoy Nath, Newton |
| author_facet | Kumar, Tanmoy Nath, Newton |
| contents | We investigate the possibility of detecting 14.4 keV and 9.4 keV solar axions and axion-like particles that could be produced in the M1 nuclear transitions of $^{57}$Fe and $^{83}$Kr, respectively. To do so, we used data from soft X-ray observations of the quiet Sun collected by the Solar X-ray Monitor (XSM) on board India's Chandrayaan-2 lunar mission. We observe that although the effective axion-nucleon couplings for $^{83}$Kr and $^{57}$Fe differ only slightly, their fluxes differ by nearly three orders of magnitude. Consequently, the limit on $|g_{aN}^{\rm eff} \times g_{aγγ}|$ and only $g_{aγγ}$ vs. $m_a$ provide more than an order-of-magnitude stronger constraint for Fe than for Kr. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_24121 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Solar Axions from Nuclear Transitions Kumar, Tanmoy Nath, Newton High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics Nuclear Theory We investigate the possibility of detecting 14.4 keV and 9.4 keV solar axions and axion-like particles that could be produced in the M1 nuclear transitions of $^{57}$Fe and $^{83}$Kr, respectively. To do so, we used data from soft X-ray observations of the quiet Sun collected by the Solar X-ray Monitor (XSM) on board India's Chandrayaan-2 lunar mission. We observe that although the effective axion-nucleon couplings for $^{83}$Kr and $^{57}$Fe differ only slightly, their fluxes differ by nearly three orders of magnitude. Consequently, the limit on $|g_{aN}^{\rm eff} \times g_{aγγ}|$ and only $g_{aγγ}$ vs. $m_a$ provide more than an order-of-magnitude stronger constraint for Fe than for Kr. |
| title | Solar Axions from Nuclear Transitions |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics Nuclear Theory |
| url | https://arxiv.org/abs/2605.24121 |