标题： 磁性CP星的高能现象及其X射线和无线电辐射揭示 显示英文标题

标题： High-Energy Phenomena in Magnetic CP Stars as Revealed by their X-Ray and Radio Emission

摘要： 在1985年之前，尝试探测磁化化学丰度恒星（MCP）的射电或X射线辐射要么徒劳无功，要么结果模糊不清。然而，在过去的十二年里，取得了一些更为成功的成果：(i) 大约35颗氦异常和硅增强的MCP恒星已经检测到了射电源，其射电亮度L_{R} \propto T_eff^7 H_s^{1.2} P_rot^{-0.6}与有效温度T_eff、表面磁场强度H_s以及自转周期P_rot有关；对于几颗MCP恒星，还观察到了射电辐射的自转调制现象。所有这些证据表明，产生射电辐射的是MCP恒星本身，而不是伴星；(ii) 然而，MCP恒星的X射线辐射特性仍未得到充分表征：尽管现在大约有18颗MCP恒星与X射线源相关联，但由于这种X射线辐射与其他恒星参数之间缺乏明确的相关性，很难排除伴星假设。 显示英文摘要

摘要： Before 1985, attempts to detect radio or X-ray emission from Magnetic CP (MCP) stars were either fruitless or ambiguous. However, more successful results have been obtained in the last dozen years: (i) Radio emission has now been detected from ~35 MCP stars of the Helium-peculiar and Silicon-strong subclasses, with a functional dependence of radio luminosity L_{R} \propto T_eff^7 H_s^{1.2} P_rot^{-0.6}, where T_eff is the effective temperature, H_s is the surface magnetic field strength, and P_rot is the rotational period; rotational modulation of the radio emission has also been observed for several MCP stars. All of this evidence suggests that it is the MCP stars themselves, not close companions, that are responsible for the radio emission; (ii) The X-ray emission properties of MCP stars are however still poorly characterized: although a moderate number (~18) have by now been associated with X-ray sources, the lack of a clear correlation of this X-ray emission with other stellar parameters has made it difficult to rule out the close companion hypothesis.