来自长伽马射线暴的逆康普顿辐射观测
高能天体物理现象
2020-06-15 v1
摘要
长时标伽马射线暴（GRB）起源于大质量垂死恒星坍缩核心发出的超相对论性喷流。其特征是初始阶段在 keV–MeV 能段出现明亮且高度变化的辐射，该辐射很可能产生于喷流内部，持续时间为毫秒到分钟，称为瞬时辐射。随后，喷流与外部介质的相互作用产生外激波，导致余辉辐射，余辉持续数天到数月，并覆盖从射电到 GeV 能段的宽广能量范围。余辉辐射通常被很好地解释为外激波加速电子的同步辐射。最近，在 GRB 190114C 中观测到了介于 0.2 和 1 TeV 之间的强烈、长时标辐射。在此，我们展示了针对 GRB 190114C 的多频段观测活动结果，并研究了该 GRB 辐射在跨越 17 个数量级的能量范围（从 到 \,eV）内的随时间演化。我们发现宽带能谱分布呈双峰结构，TeV 辐射构成一个独立的光谱成分，其功率与同步辐射成分相当。该成分与外激波余辉相关，并可由高能电子对同步辐射光子的逆康普顿上散射得到满意解释。我们发现，解释所观测 TeV 成分所需的条件并非罕见，这支持了逆康普顿辐射在 GRB 中普遍产生的可能性。
引用
@article{arxiv.2006.07251,
title = {Observation of inverse Compton emission from a long $\gamma$-ray burst},
author = {V. A. Acciari and S. Ansoldi and L. A. Antonelli and A. Arbet Engels and D. Baack and A. Babić and B. Banerjee and U. Barres de Almeida and J. A. Barrio and J. Becerra González and W. Bednarek and L. Bellizzi and E. Bernardini and A. Berti and J. Besenrieder and W. Bhattacharyya and C. Bigongiari and A. Biland and O. Blanch and G. Bonnoli and Ž. Bošnjak and G. Busetto and R. Carosi and G. Ceribella and Y. Chai and A. Chilingaryan and S. Cikota and S. M. Colak and U. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and V. D'Elia and P. Da Vela and F. Dazzi and A. De Angelis and B. De Lotto and M. Delfino and J. Delgado and D. Depaoli and F. Di Pierro and L. Di Venere and E. Do Souto Espiñeira and D. Dominis Prester and A. Donini and D. Dorner and M. Doro and D. Elsaesser and V. Fallah Ramazani and A. Fattorini and G. Ferrara and D. Fidalgo and L. Foffano and M. V. Fonseca and L. Font and C. Fruck and S. Fukami and R. J. García López and M. Garczarczyk and S. Gasparyan and M. Gaug and N. Giglietto and F. Giordano and N. Godinović and D. Green and D. Guberman and D. Hadasch and A. Hahn and J. Herrera and J. Hoang and D. Hrupec and M. Hütten and T. Inada and S. Inoue and K. Ishio and Y. Iwamura and L. Jouvin and D. Kerszberg and H. Kubo and J. Kushida and A. Lamastra and D. Lelas and F. Leone and E. Lindfors and S. Lombardi and F. Longo and M. López and R. López-Coto and A. López-Oramas and S. Loporchio and B. Machado de Oliveira Fraga and C. Maggio and P. Majumdar and M. Makariev and M. Mallamaci and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and M. Mariotti and M. Martínez and D. Mazin and S. Mićanović and D. Miceli and M. Minev and J. M. Miranda and R. Mirzoyan and E. Molina and A. Moralejo and D. Morcuende and V. Moreno and E. Moretti and P. Munar-Adrover and V. Neustroev and C. Nigro and K. Nilsson and D. Ninci and K. Nishijima and K. Noda and L. Nogués and S. Nozaki and S. Paiano and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and P. Peñil and M. Peresano and M. Persic and P. G. Prada Moroni and E. Prandini and I. Puljak and W. Rhode and M. Ribó and J. Rico and C. Righi and A. Rugliancich and L. Saha and N. Sahakyan and T. Saito and S. Sakurai and K. Satalecka and K. Schmidt and T. Schweizer and J. Sitarek and I. Šnidarić and D. Sobczynska and A. Somero and A. Stamerra and D. Strom and M. Strzys and Y. Suda and T. Surić and M. Takahashi and F. Tavecchio and P. Temnikov and T. Terzić and M. Teshima and N. Torres-Albà and L. Tosti and V. Vagelli and J. van Scherpenberg and G. Vanzo and M. Vazquez Acosta and C. F. Vigorito and V. Vitale and I. Vovk and M. Will and D. Zarić and L. Nava and P. Veres and P. N. Bhat and M. S. Briggs and W. H. Cleveland and R. Hamburg and C. M. Hui and B. Mailyan and R. D. Preece and O. Roberts and A. von Kienlin and C. A. Wilson-Hodge and D. Kocevski and M. Arimoto and D. Tak and K. Asano and M. Axelsson and G. Barbiellini and E. Bissaldi and F. Fana Dirirsa and R. Gill and J. Granot and J. McEnery and S. Razzaque and F. Piron and J. L. Racusin and D. J. Thompson and S. Campana and M. G. Bernardini and N. P. M. Kuin and M. H. Siegel and S. Bradley Cenko and P. O'Brien and M. Capalbi and A. D'Aì and M. De Pasquale and J. Gropp and N. Klingler and J. P. Osborne and M. Perri and R. Starling and G. Tagliaferri and A. Tohuvavohu and A. Ursi and M. Tavani and M. Cardillo and C. Casentini and G. Piano and Y. Evangelista and F. Verrecchia and C. Pittori and F. Lucarelli and A. Bulgarelli and N. Parmiggiani and G. E. Anderson and J. P. Anderson and G. Bernardi and J. Bolmer and M. D. Caballero-García and I. M. Carrasco and A. Castellón and N. Castro Segura and A. J. Castro-Tirado and S. V. Cherukuri and A. M. Cockeram and P. D'Avanzo and A. Di Dato and R. Diretse and R. P. Fender and E. Fernández-García and J. P. U. Fynbo and A. S. Fruchter and J. Greiner and M. Gromadzki and K. E. Heintz and I. Heywood and A. J. van der Horst and Y. -D. Hu and C. Inserra and L. Izzo and V. Jaiswal and P. Jakobsson and J. Japelj and E. Kankare and D. A. Kann and C. Kouveliotou and S. Klose and A. J. Levan and X. Y. Li and S. Lotti and K. Maguire and D. B. Malesani and I. Manulis and M. Marongiu and S. Martin and A. Melandri and M. Michałowski and J. C. A. Miller-Jones and K. Misra and A. Moin and K. P. Mooley and S. Nasri and M. Nicholl and A. Noschese and G. Novara and S. B. Pandey and E. Peretti and C. J. Pérez del Pulgar and M. A. Pérez-Torres and D. A. Perley and L. Piro and F. Ragosta and L. Resmi and R. Ricci and A. Rossi and R. Sánchez-Ramírez and J. Selsing and S. Schulze and S. J. Smartt and I. A. Smith and V. V. Sokolov and J. Stevens and N. R. Tanvir and C. C. Thóne and A. Tiengo and E. Tremou and E. Troja and A. de Ugarte Postigo and S. D. Vergani and M. Wieringa and P. A. Woudt and D. Xu and O. Yaron and D. R. Young},
journal= {arXiv preprint arXiv:2006.07251},
year = {2020}
}