Parkes observations for project P626 semester 2014APRS

We plan to search for pulsed radio-emission in transient "magnetar" sources (already known or to be discovered yet at the time of submission of this proposal), during the phase following an X-ray outburst, i.e. after an increasing of the X-ray flux of the magnetar of a factor at least 10 with respect to the normal emission. Observations of past years showed that radio-emission has been triggered in transient magnetars in at least 4 cases over 10 after this kind of outburst. However, in several cases, no prompt radio observation had been planned, preventing to investigate the phase of onset of the radio emission. That may greatly contribute to clarify the nature of the radio-emission mechanism in magnetars and the relation between them and the canonical radio pulsars. A similar program of NAPA observations has been planned by our group at various X-ray satellites and ground-based infrared and optical telescopes, thus allowing a multi-wavelenght investigation of the sources. To fully exploit our multi-wavelength data sets, we also intend to perform simultaneous X-ray and radio follow-ups of magnetars for which a trigger of this programme was obtained during current or previous semester.

本项目计划在X射线爆发（X-ray outburst）后的阶段——即磁星（magnetar）的X射线流量（X-ray flux）相较正常辐射提升至少10倍之后——对瞬态磁星源（已在本提案提交时已知或待发现）开展脉冲射电辐射搜寻。过往数年的观测结果显示，这类X射线爆发后，10例相关瞬态磁星中至少有4例触发了射电辐射。然而，其中多起事件并未规划快速射电观测，导致无法对射电辐射的起始阶段开展研究。这将极大助力阐明磁星射电辐射机制的本质，以及其与标准射电脉冲星之间的关联。本团队已针对多款X射线卫星、地基红外与光学望远镜规划了类似的NAPA观测项目，从而可对源开展多波段研究。为充分利用我们的多波段数据集，本团队还计划对当前或上一观测学期内触发本项目的磁星开展同步X射线与射电后续观测。