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arXiv 0901.0568astro-ph.SRhep-ph
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来自失败超新星的扩散中微子流

Diffuse neutrino flux from failed supernovae

Cecilia Lunardini

摘要:

我研究的电子反中微子扩散通量从恒星崩溃与直接黑洞形成(失败的超新星)。这个通量比成功的超新星更有活力,因此它可能对实际探测阈值以上的总扩散通量有很大贡献。总通量可能比以前认为的要高得多,接近SuperKamiokande的灵敏度。对于更保守的参数值,从失败的超新星通量占主导地位的反中微子能量超过30-45兆电子伏,有可能给一个可观察到的光谱失真兆吨探测器。

英文摘要:

I study the diffuse flux of electron antineutrinos from stellar collapses with direct black hole formation (failed supernovae). This flux is more energetic than that from successful supernovae, and therefore it might contribute substantially to the total diffuse flux above realistic detection thresholds. The total flux might be considerably higher than previously thought, and approach the sensitivity of SuperKamiokande. For more conservative values of the parameters, the flux from failed supernovae dominates for antineutrino energies above 30-45 MeV, with potential to give an observable spectral distortion at Megaton detectors.

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