偏光X射线限制了黑洞X射线二进制二进制X-1中的磁盘喷射几何形状

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偏光X射线限制了黑洞X射线二进制二进制X-1中的磁盘喷射几何形状

Polarized x-rays constrain the disk-jet geometry in the black hole x-ray binary Cygnus X-1

论文作者

Krawczynski, Henric, Muleri, Fabio, Dovčiak, Michal, Veledina, Alexandra, Cavero, Nicole Rodriguez, Svoboda, Jiri, Ingram, Adam, Matt, Giorgio, Garcia, Javier A., Loktev, Vladislav, Negro, Michela, Poutanen, Juri, Kitaguchi, Takao, Podgorný, Jakub, Rankin, John, Zhang, Wenda, Berdyugin, Andrei, Berdyugina, Svetlana V., Bianchi, Stefano, Blinov, Dmitry, Capitanio, Fiamma, Di Lalla, Niccolò, Draghis, Paul, Fabiani, Sergio, Kagitani, Masato, Kravtsov, Vadim, Kiehlmann, Sebastian, Latronico, Luca, Lutovinov, Alexander A., Mandarakas, Nikos, Marin, Frédéric, Marinucci, Andrea, Miller, Jon, Mizuno, Tsunefumi, Molkov, Sergey V., Omodei, Nicola, Petrucci, Pierre-Olivier, Ratheesh, Ajay, Sakanoi, Takeshi, Semena, Andrei N., Skalidis, Raphael, Soffitta, Paolo, Tennant, Allyn F., Thalhammer, Phillipp, Tombesi, Francesco, Weisskopf, Martin C., Wilms, Joern, Zhang, Sixuan, Agudo, Iván, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccolò, Castellano, Simone, Cavazzuti, Elisabetta, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Marco, Alessandro, Donnarumma, Immacolata, Doroshenko, Victor, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Ferrazzoli, Riccardo, Gunji, Shuichi, Hayashida, Kiyoshi, Heyl, Jeremy, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kolodziejczak, Jeffery J., La Monaca, Fabio, Liodakis, Ioannis, Maldera, Simone, Manfreda, Alberto, Marscher, Alan P., Marshall, Herman L., Mitsuishi, Ikuyuki, Ng, C. -Y., O'Dell, Stephen L., Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Pilia, Maura, Possenti, Andrea, Puccetti, Simonetta, Ramsey, Brian D., Romani, Roger W., Sgrò, Carmelo, Slane, Patrick, Spandre, Gloria, Tamagawa, Toru, Tavecchio, Fabrizio, Taverna, Roberto, Tawara, Yuzuru, Thomas, Nicolas E., Trois, Alessio, Tsygankov, Sergey, Turolla, Roberto, Vink, Jacco, Wu, Kinwah, Xie, Fei, Zane, Silvia

论文摘要

当气体从普通恒星中剥离并积聚在黑洞上时，黑洞X射线二进制（XRB）系统会形成，该黑洞充分加热了气体以发射X射线。我们报告使用成像X射线极化探索器对XRB Cygnus X-1进行了极化观察。电场位置角度与流出的射流对齐，表明该喷气机是从内部X射线发射区域发射的。在2至8千电极下极化度为（4.01+-0.20）％，这意味着比二进制轨道更接近边缘磁盘。观察结果表明，热X射线发射等离子体在垂直于射流轴的平面上延伸，而不是平行于射流。

A black hole x-ray binary (XRB) system forms when gas is stripped from a normal star and accretes onto a black hole, which heats the gas sufficiently to emit x-rays. We report a polarimetric observation of the XRB Cygnus X-1 using the Imaging x-ray Polarimetry Explorer. The electric field position angle aligns with the outflowing jet, indicating that the jet is launched from the inner x-ray emitting region. The polarization degree is (4.01+-0.20)% at 2 to 8 kiloelectronvolts, implying that the accretion disk is viewed closer to edge-on than the binary orbit. The observations reveal that hot x-ray emitting plasma is spatially extended in a plane perpendicular to the jet axis, not parallel to the jet.

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