Description: 伽馬射線光子是電磁波譜中能量最高的光子，用希臘字母“γ”表示。伽馬射線光子的能量一般大於 100 千電子伏，是可見光光子能量的 50,000 多倍，頻率約為 3x10¹⁹ 赫茲或更高，波長小於 10 皮米（1 皮米等於 10^-12 米）。

在地球上，伽馬射線可由某些放射性核素的原子核在放射性衰變後發出。在天文學中，伽馬射線可由最極端的超新星以伽馬射線暴的形式發出，也可由活動星系核（如耀變體）以及太陽耀斑發出。

天體源所發出的伽馬射線無法到達地球表面。因此，要研究伽馬射線天文，就必須將探測器發射到地球大氣層之外。

Related Terms:

• 活動星系核
• Electromagnetic Radiation
• Solar Flare
• Ultraviolet
• 伽瑪射線暴

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

This is an automated transliteration of the simplified Chinese translation of this term

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