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arXiv 2107.09097hep-phastro-ph.HE
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来自附近Ia型超新星的重类轴子粒子和MeV衰变光子

Heavy axion-like particles and MeV decay photons from nearby type Ia supernovae

Kanji Mori

摘要:

类轴子粒子(Axion-like particles,ALP)是一种假设的玻色子,可以与光子耦合。由于许多ALP可以从热而致密的天体物理等离子体中发射出来,因此附近的超新星(SNe)是一个可能的探测器,可以探测它们的性质,包括ALP质量m_a和ALP与光子之间的耦合常数g_{ag}。我计算了ALP排放的Ia型SN(SN Ia)模型与近Ekrasekhar质量。我们发现,如果m_a < 1 MeV,Ia超新星的ALP光度可达~10^43(g_{ag} /10^-10 GeV^-1)^2 erg·s^-1。从SNe发射的重ALP是不稳定的,并衰变为光子。我预测的时间延迟和通量的衰变光子到达地球从附近的超新星Ia。它被发现,衰变光子可能会提供一个约束g_{ag},这是严格的SN 1987 A的限制,如果一个SN Ia位于1千秒差距或更近,下一代MeV的伽马射线卫星观察它的爆炸后1-10年。

英文摘要:

Axion-like particles (ALPs) are hypothetical bosons which may couple with photons. Since many ALPs can be emitted from hot and dense astrophysical plasma, nearby supernovae (SNe) are a possible probe into their properties including the ALP mass m_a and the coupling constant g_{ag} between ALPs and photons. I calculated ALP emission from a type Ia SN (SN Ia) model with the near-Chandrasekhar mass. It is found that the ALP luminosity from SNe Ia reaches ~10^43(g_{ag}/10^-10 GeV^-1)^2 erg s^-1 if m_a < 1 MeV. Heavy ALPs emitted from SNe are unstable and decay into photons. I predict the time delay and the flux of decay photons that reach Earth from a nearby SN Ia. It is found that the decay photons may provide a constraint on g_{ag} which is as stringent as an SN 1987A limit if an SN Ia is located 1 kpc away or closer and next-generation MeV gamma-ray satellites observe it ~1-10 years after the explosion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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