论文标题
不连贯的太阳能无线电排放
Incoherent Solar Radio Emission
论文作者
论文摘要
不一致的太阳能无线电辐射来自自由，陀螺和陀螺仪发射机制。免费的主要是由热电子和离子之间的库仑碰撞产生的。在存在磁场的情况下，低能电子和轻度相对论电子的加速度分别由低能电子和轻度相对论电子的加速产生。在非闪光的太阳中，免费的是主要的发射机制，除了在微波炉处发射陀螺的强磁场区域外。由于其无处不在的存在，可以使用无释放的发射来探测高于温度最低的非挥发性太阳大气。陀螺不透明度在很大程度上取决于磁场强度和方向。因此，它为估计冠状磁场提供了独特的工具。陀螺仪是耀斑的主要发射机制，其频率高于1-2 GHz，取决于磁场和加速电子的特性，以及环境等离子体的特性。在本文中，我们详细讨论了上述机制及其诊断潜力。
Incoherent solar radio radiation comes from the free-free, gyroresonance, and gyrosynchrotron emission mechanisms. Free-free is primarily produced from Coulomb collisions between thermal electrons and ions. Gyroresonance and gyrosynchrotron result from the acceleration of low-energy electrons and mildly relativistic electrons, respectively, in the presence of a magnetic field. In the non-flaring Sun, free-free is the dominant emission mechanism with the exception of regions of strong magnetic fields which emit gyroresonance at microwaves. Due to its ubiquitous presence, free-free emission can be used to probe the non-flaring solar atmosphere above temperature minimum. Gyroresonance opacity depends strongly on the magnetic field strength and orientation; hence it provides a unique tool for the estimation of coronal magnetic fields. Gyrosynchrotron is the primary emission mechanism in flares at frequencies higher than 1-2 GHz and depends on the properties of both the magnetic field and the accelerated electrons, as well as the properties of the ambient plasma. In this paper we discuss in detail the above mechanisms and their diagnostic potential.
