论文标题
无线电大放异彩外末期调查（RLEES）：GMRT搜索电子回旋马斯特发射
Radio-Loud Exoplanet-Exomoon Survey (RLEES): GMRT Search for Electron Cyclotron Maser Emission
论文作者
论文摘要
我们首次使用巨大的Metrewave射电望远镜（GMRT）进行了首次专门搜索系外星 - 外神像相互作用的签名，这是无线电大 - 大声外观exomoon Survey（RLEES）的一部分。由于出色的潮汐加热，辐射和随后的大气逃逸，候选“ Exo-io”系统预计将发射高达$ 10^6 $ $ 10^6美元的等离子体通量，而不是Jupiter-io DC电路。这可以引起外部外观系统的可检测无线电发射。我们分析了三位“ Exo-io”候选明星：WASP-49，HAT-P 12和HD 189733。我们在初级$ \＆$中期过境期间在400 MHz的WASP-49B进行了12小时的相曲线观测，并在第三$ \＆$ third Quadratures以及第三个Quadratures上涨3 $ $ $ 0.1 $ 0.18 $ n.18 $ n MIMIM MJY上，均为$ \＆$。在150和325 MHz的GMRT观察到HAT-P〜12。我们进一步分析了325 MHz的HD 189733的档案数据。从三个系统中未检测到发射。但是，我们对无线电通量密度施加了强大的上限。鉴于大多数Exo-io候选者绕土星旋转，因此我们鼓励更多的多波长搜索（尤其是低频）跨越此处限制的外部外部B场强度的较低范围。
We conducted the first dedicated search for signatures of exoplanet-exomoon interactions using the Giant Metrewave Radio Telescope (GMRT) as part of the radio-loud exoplanet-exomoon survey (RLEES). Due to stellar tidal heating, irradiation, and subsequent atmospheric escape, candidate `exo-Io' systems are expected to emit up to $10^6$ times more plasma flux than the Jupiter-Io DC circuit. This can induce detectable radio emission from the exoplanet-exomoon system. We analyze three `exo-Io' candidate stars: WASP-49, HAT-P 12, and HD 189733. We perform 12-hour phase-curve observations of WASP-49b at 400 MHz during primary $\&$ secondary transit, as well as first $\&$ third quadratures achieving a 3$σ$ upper-limit of 0.18 mJy/beam averaged over four days. HAT-P~12 was observed with GMRT at 150 and 325 MHz. We further analyzed the archival data of HD 189733 at 325 MHz. No emission was detected from the three systems. However, we place strong upper limits on radio flux density. Given that most exo-Io candidates orbit hot Saturns, we encourage more multiwavelength searches (in particular low frequencies) to span the lower range of exoplanet B-field strengths constrained here.
