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  Resolving the Crab pulsar wind nebula at teraelectronvolt energies

Collaboration, H. E. S. S., Abdalla, H., Aharonian, F., Ait Benkhali, F., Angüner, E. O., Arakawa, M., et al. (2019). Resolving the Crab pulsar wind nebula at teraelectronvolt energies. Nature astronomy. doi:10.1038/s41550-019-0910-0.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-F3BA-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-F3BB-7
Genre: Journal Article

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Collaboration, H. E. S. S., Author
Abdalla, H., Author
Aharonian, F.1, Author              
Ait Benkhali, Faical1, Author              
Angüner, E. O., Author
Arakawa, M., Author
Arcaro, C., Author
Arm, C., Author
Backes, M., Author
Barnard, M., Author
Becherini, Y., Author
Tjus, J. Becker, Author
Berge, D., Author
Bernloehr, K.2, Author              
Blackwell, R., Author
Böttcher, M., Author
Boisson, C., Author
Bolmont, J., Author
Bonnefoy, S., Author
Bordas Coma, P.1, Author              
Bregeon, J., AuthorBrun, F., AuthorBrun, P., AuthorBryan, M., AuthorBüchele, M., AuthorBulik, T., AuthorBylund, T., AuthorCapasso, M., AuthorCaroff, S., AuthorCarosi, A., AuthorCasanova, Sabrina1, Author              Cerruti, M., AuthorChakraborty, Nachiketa1, Author              Chaves, R. C. G., AuthorChen, A., AuthorColafrancesco, S., AuthorCondon, B., AuthorDavids, I. D., AuthorDeil, C.2, Author              Devin, J., AuthordeWilt, P., AuthorDirson, L., AuthorDjannati-Ataï, A., AuthorDmytriiev, A., AuthorDonath, Axel1, Author              Doroshenko, V., AuthorDrury, L. O'C., AuthorDyks, J., AuthorEgberts, K., AuthorEmery, G., AuthorErnenwein, J. -P., AuthorEschbach, S., AuthorFegan, S., AuthorFiasson, A., AuthorFontaine, G., AuthorFunk, S., AuthorFüßling, M., AuthorGabici, S., AuthorGallant, Y. A., AuthorGaté, F., AuthorGiavitto, G., AuthorGlawion, D., AuthorGlicenstein, J. F., AuthorGottschall, D., AuthorGrondin, M. -H., AuthorHahn, Joachim2, Author              Haupt, M., AuthorHeinzelmann, G., AuthorHenri, G., AuthorHermann, G.2, Author              Hinton, J. A.2, Author              Hofmann, W.1, Author              Hoischen, C., AuthorHolch, T. L., AuthorHoller, M., AuthorHorns, D., AuthorHuber, D., AuthorIwasaki, H., AuthorJacholkowska, A., AuthorJamrozy, M., AuthorJankowsky, D., AuthorJankowsky, F., AuthorJouvin, L., AuthorJung-Richardt, I., AuthorKastendieck, M. A., AuthorKatarzyński, K., AuthorKatsuragawa, M., AuthorKatz, U., AuthorKhangulyan, D., AuthorKhélifi, B., AuthorKing, J., AuthorKlepser, S., AuthorKluźniak, W., AuthorKomin, Nu., AuthorKosack, K., AuthorKraus, M., AuthorLamanna, G., AuthorLau, J., AuthorLefaucheur, J., AuthorLemière, A., AuthorLemoine-Goumard, M., AuthorLenain, J. -P., AuthorLeser, E., AuthorLohse, T., AuthorLópez-Coto, R-2, Author              Lypova, I., AuthorMalyshev, D., AuthorMar, V., AuthorMarcowith, A., AuthorMariaud, C., AuthorMartí-Devesa, G., AuthorMarx, Ramin2, Author              Maurin, G., AuthorMeintjes, P. J., AuthorMitchell, A.1, Author              Moderski, R., AuthorMohamed, M., AuthorMohrmann, L., AuthorMoore, C., AuthorMoulin, E., AuthorMurach, T., AuthorNakashima, S., Authorde Naurois, M., AuthorNdiyavala, H., AuthorNiederwanger, F., AuthorNiemiec, J., AuthorOakes, L., AuthorO'Brien, P., AuthorOdaka, H., AuthorOhm, S., AuthorOstrowski, M., AuthorOya, I., AuthorPanter, M.1, Author              Parsons, R. D.2, Author              Perennes, C., AuthorPetrucci, P. -O., AuthorPeyaud, B., AuthorPiel, Q., AuthorPita, S., AuthorPoireau, V., AuthorNoel, A. Priyana, AuthorProkhorov, D. A., AuthorProkoph, H., AuthorPühlhofer, G., AuthorPunch, M., AuthorQuirrenbach, A., AuthorRaab, S., AuthorRauth, R., AuthorReimer, A., AuthorReimer, O., AuthorRenaud, M., AuthorRieger, F.1, Author              Rinchiuso, L., AuthorRomoli, C., AuthorRowell, G., AuthorRudak, B., AuthorRuiz Velasco, E.2, Author              Sahakian, V., AuthorSaito, S., AuthorSanchez, D. A., AuthorSantangelo, A., AuthorSasaki, M., AuthorSchlickeiser, R., AuthorSchüssler, F., AuthorSchulz, A., AuthorSchutte, H., AuthorSchwanke, U., AuthorSchwemmer, S., AuthorSeglar-Arroyo, M., AuthorSenniappan, M., AuthorSeyffert, A. S., AuthorShafi, N., AuthorShilon, I., AuthorShiningayamwe, K., AuthorSimoni, R., AuthorSinha, A., AuthorSol, H., AuthorSpecovius, A., AuthorSpir-Jacob, M., AuthorStawarz, Ł., AuthorSteenkamp, R., AuthorStegmann, C., AuthorSteppa, C., AuthorTakahashi, T., AuthorTavernet, J. -P., AuthorTavernier, T., AuthorTaylor, A. M., AuthorTerrier, R., AuthorTiziani, D., AuthorTluczykont, M., AuthorTrichard, C., AuthorTsirou, M., AuthorTsuji, N., AuthorTuffs, R.1, Author              Uchiyama, Y., Authorvan der Walt, D. J., Authorvan Eldik, C., Authorvan Rensburg, C., Authorvan Soelen, B., AuthorVasileiadis, G., AuthorVeh, J., AuthorVenter, C., AuthorVincent, P., AuthorVink, J., AuthorVoisin, F., AuthorVoelk, H. J.3, Author              Vuillaume, T., AuthorWadiasingh, Z., AuthorWagner, S. J., AuthorWagner, R. M., AuthorWhite, R.2, Author              Wierzcholska, A., AuthorYang, R., AuthorYoneda, H., AuthorZaborov, D., AuthorZacharias, M., AuthorZanin, R.1, Author              Zdziarski, A. A., AuthorZech, A., AuthorZiegler, A., AuthorZorn, J., AuthorŻywucka, N., Author more..
Affiliations:
1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              
2Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society, ou_2074298              
3Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907548              

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Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 MPINP: HESS - Abteilung Hofmann
 Abstract: The Crab nebula is one of the most studied cosmic particle accelerators, shining brightly across the entire electromagnetic spectrum up to very high-energy gamma rays. It is known from radio to gamma-ray observations that the nebula is powered by a pulsar, which converts most of its rotational energy losses into a highly relativistic outflow. This outflow powers a pulsar wind nebula (PWN), a region of up to 10~light-years across, filled with relativistic electrons and positrons. These particles emit synchrotron photons in the ambient magnetic field and produce very high-energy gamma rays by Compton up-scattering of ambient low-energy photons. While the synchrotron morphology of the nebula is well established, it was up to now not known in which region the very high-energy gamma rays are emitted. Here we report that the Crab nebula has an angular extension at gamma-ray energies of 52 arcseconds (assuming a Gaussian source width), significantly larger than at X-ray energies. This result closes a gap in the multi-wavelength coverage of the nebula, revealing the emission region of the highest energy gamma rays. These gamma rays are a new probe of a previously inaccessible electron and positron energy range. We find that simulations of the electromagnetic emission reproduce our new measurement, providing a non-trivial test of our understanding of particle acceleration in the Crab nebula.

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 Dates: 2019-10-28
 Publication Status: Published online
 Pages: 23 pages, 5 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1909.09494
DOI: 10.1038/s41550-019-0910-0
 Degree: -

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Title: Nature astronomy
Source Genre: Journal
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Publ. Info: London : Springer Nature
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 2397-3366
CoNE: https://pure.mpg.de/cone/journals/resource/2397-3366