Exploring the intergalactic magnetic field by means of Faraday tomography

Akahori Takuya; Kumazaki Kohei; Takahashi Keitaro; Ryu Dongsu

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Exploring the intergalactic magnetic field by means of Faraday tomography

机译：用法拉第层析成像探测星际磁场

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Unveilingtheintergalacticmagneticfield(IGMF)infilamentsofgalaxiesisaveryimportantandchallengingsubjectinmodernastronomy.InordertoprobetheIGMFfromrotationmeasures(RMs)ofextragalacticradiosources,weneedtoseparateRMsduetootheroriginssuchasthesource,interveninggalaxies,andourGalaxy.Inthispaper,wediscussobservationalstrategiesfortheseparationbymeansofFaradaytomography(FaradayRMsynthesis).WeconsideranobservationofasingleradiosourcesuchasaradiogalaxyoraquasarviewedthroughtheGalaxyandthecosmicweb.Wethencomparetheobservationwithanotherobservationofaneighboringsourcewithasmallangularseparation.OursimulationswithsimplemodelsofthesourcessuggestthatitwouldbenoteasytodetecttheRMduetoanIGMFofordera??a€‰1a€‰rada€‰ma?’2,anexpectedvaluefortheIGMFthroughasinglefilament.Contrarytothis,wefindthatanRMofatleasta??a€‰10a€‰rada€‰ma?’2couldbedetectedwiththeSquareKilometreArrayoritspathfinders/precursors,ifweachieveselectionofidealsources.TheseresultswouldbeimprovedifweincorporateddecompositiontechniquessuchasRMCLEANandQU-fitting.WediscussthefeasibilityofthestrategiesforcaseswithcomplexGalacticemissionsaswellaswitheffectsofobservationalnoiseandradiofrequencyinterferences.

机译：Unveilingtheintergalacticmagneticfield（IGMF）infilamentsofgalaxiesisaveryimportantandchallengingsubjectinmodernastronomy.InordertoprobetheIGMFfromrotationmeasures（RMS）ofextragalacticradiosources，weneedtoseparateRMsduetootheroriginssuchasthesource，interveninggalaxies，andourGalaxy.Inthispaper，wediscussobservationalstrategiesfortheseparationbymeansofFaradaytomography（FaradayRMsynthesis）.WeconsideranobservationofasingleradiosourcesuchasaradiogalaxyoraquasarviewedthroughtheGalaxyandthecosmicweb.Wethencomparetheobservationwithanotherobservationofaneighboringsourcewithasmallangularseparation.OursimulationswithsimplemodelsofthesourcessuggestthatitwouldbenoteasytodetecttheRMduetoanIGMFofordera ??一个€‰1A€‰雷达€‰毫安？“2，anexpectedvaluefortheIGMFthroughasinglefilament.Contrarytothis，我们发现RMofatleasta的价格是10欧元€rad a€‰ma？'2如果能够选择理想的来源，则可以用平方公里阵列或它的探路者/前驱体检测出。如果结合了分解技术，这些结果将得到改进。 CLEAN和QU拟合。我们讨论了针对具有复杂星系发射的情况以及观察到的噪声和双频干扰影响的策略的可行性。

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《PASJ: Publications of the Astronomical Society of Japan》 |2014年第3期|共页
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Akahori Takuya; Kumazaki Kohei; Takahashi Keitaro; Ryu Dongsu;
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1. Optimum frequency of Faraday tomography to explore the intergalactic magnetic field in filaments of galaxies [J] . Akahori Takuya, Ideguchi Shinsuke, Aoki Takahiro, PASJ: Publications of the Astronomical Society of Japan . 2018,第6期

机译：法拉第层析成像的最佳频率，以探索星系细丝中的星系间磁场
2. Optimum frequency of Faraday tomography to explore the intergalactic magnetic field in filaments of galaxies [J] . Akahori Takuya, Ideguchi Shinsuke, Aoki Takahiro, PASJ: Publications of the Astronomical Society of Japan . 2018,第6期

机译：法拉第断层扫描的最佳频率探索星系细丝中的间歇磁场
3. Exploring the intergalactic magnetic field by means of Faraday tomography [J] . Takuya AKAHORI, Kohei KUMAZAKI, Keitaro TAKAHASHI, PASJ: Publications of the Astronomical Society of Japan . 2014,第3期

机译：通过法拉第断层扫描探索星际磁场
4. Magnetic fields in the intergalactic medium and in the cosmic web [C] . Marcus Brüggen, Shane OSullivan, Annalisa Bonafede, IAU General Assembly;International Astronomical Union., General Assembly . 2020

机译：磁场在夜间介质和宇宙网中
5. Probing Intergalactic Magnetic Fields from γ-Ray Observations [D] . Chen, Wenlei. 2016

机译：从γ射线观测探测晶状体磁场
6. Exploring fast electron transfer processes by magnetic fields. [O] . K Schulten, A Weller 1978

机译：通过磁场探索快速电子转移过程。
7. Exploring the Intergalactic Magnetic Field by Means of Faraday Tomography [O] . Akahori, Takuya, Kumazaki, Kohei, Takahashi, Keitaro, 2014

机译：利用法拉第探测星际磁场断层摄影术

Exploring the intergalactic magnetic field by means of Faraday tomography

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