Diffuse Galactic Gamma-ray Emission with H.E.S.S.
Diffuse Galactic Gamma-ray Emission with H.E.S.S.
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DOI：
10.1103/physrevd.90.122007
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发表时间：
2014-11
期刊：
影响因子：
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通讯作者：
H. C. A. Abramowski;F. Aharonian;F. Benkhali;A. Akhperjanian;E. Anguner;Michael Backes;S. Balenderan;A. Balzer;A. Barnacka;Y. Becherini;J. Tjus;D. Berge;S. Bernhard;K. Bernlohr;E. Birsin;J. Biteau;M. Bottcher;C. Boisson;J. Bolmont;P. Bordas;J. Bregeon;F. Brun;P. Brun;M. Bryan;T. Bulik;S. Carrigan;S. Casanova;P. Chadwick;N. Chakraborty;R. Chalme-Calvet;R. Chaves;M. Chr'etien;S. Colafrancesco;G. Cologna;J. Conrad;Camille Couturier;Y. Cui;I. Davids;B. Degrange;C. Deil;P. deWilt;A. Djannati-Atai;W. Domainko;A. Donath;L. Drury;G. Dubus;K. Dutson;J. Dyks;M. Dyrda;T. Edwards;K. Egberts;P. Eger;P. Espigat;C. Farnier;S. Fegan;F. Feinstein;M. V. Fernandes;D. Fernandez;A. Fiasson;G. Fontaine;A. Forster;M. Fussling;S. Gabici;M. Gajdus;Y. Gallant;T. Garrigoux;G. Giavitto;B. Giebels;J. Glicenstein;D. Gottschall;M. Grondin;M. Grudzi'nska;D. Hadasch;S. Haffner;J. Hahn;J. Harris;G. Heinzelmann;G. Henri;G. Hermann;O. Hervet;A. Hillert;J. Hinton;W. Hofmann;P. Hofverberg;M. Holler;D. Horns;A. Ivascenko;A. Jacholkowska;C. Jahn;M. Jamrozy;M. Janiak;F. Jankowsky;I. Jung-Richardt;M. Kastendieck;K. Katarzy'nski;U. Katz;S. Kaufmann;B. Kh'elifi;M. Kieffer;S. Klepser;D. Klochkov;W. Klu'zniak;D. Kolitzus;N. Komin;K. Kosack;S. Krakau;F. Krayzel;P. Kruger;H. Laffon;G. Lamanna;J. Lefaucheur;V. Lefranc;A. Lemière;M. Lemoine-Goumard;J. Lenain;T. Lohse;A. Lopatin;C.-C. Lu-C.;V. Marandon;A. Marcowith;R. Marx;G. Maurin;N. Maxted;M. Mayer;T. Mccomb;J. M'ehault;P. Meintjes;U. Menzler;M. Meyer;A. Mitchell;R. Moderski;M. Mohamed;K. Moraa;E. Moulin;T. Murach;M. Naurois;J. Niemiec;S. Nolan;L. Oakes;H. Odaka;S. Ohm;B. Opitz;M. Ostrowski;I. Oya;M. Panter;R. Parsons;M. Arribas;N. Pekeur;G. Pelletier;P. Petrucci;B. Peyaud;S. Pita;H. Poon;G. Puhlhofer;M. Punch;A. Quirrenbach;S. Raab;I. Reichardt;A. Reimer;O. Reimer;M. Renaud;R. Reyes;F. Rieger;C. Romoli;S. Rosier-Lees;G. Rowell;B. Rudak;C. Rulten;V. Sahakian;D. Salek;D. Sanchez;A. Santangelo;R. Schlickeiser;F. Schussler;A. Schulz;U. Schwanke;S. Schwarzburg;S. Schwemmer;H. Sol;F. Spanier;G. Spengler;F. Spies;L. Stawarz;R. Steenkamp;C. Stegmann;F. Stinzing;K. Stycz;I. Sushch;J. Tavernet;T. Tavernier;A. Taylor;R. Terrier;M. Tluczykont;C. Trichard;K. Valerius;C. Eldik;B. V. Soelen;G. Vasileiadis;J. Veh;C. Venter;A. Viana;P. Vincent;J. Vink;H. Volk;F. Volpe;M. Vorster;T. Vuillaume;S. Wagner;P. Wagner;R. Wagner;M. Ward;M. Weidinger;Q. Weitzel;R. White;A. Wierzcholska;P. Willmann;A. Wornlein;D. Wouters;R. Yang;V. Zabalza;D. Zaborov;M. Zacharias;A. Zdziarski;A. Zech;H. Zechlin;Y. Fukui
中科院分区：
文献类型：
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作者：
H. C. A. Abramowski;F. Aharonian;F. Benkhali;A. Akhperjanian;E. Anguner;Michael Backes;S. Balenderan;A. Balzer;A. Barnacka;Y. Becherini;J. Tjus;D. Berge;S. Bernhard;K. Bernlohr;E. Birsin;J. Biteau;M. Bottcher;C. Boisson;J. Bolmont;P. Bordas;J. Bregeon;F. Brun;P. Brun;M. Bryan;T. Bulik;S. Carrigan;S. Casanova;P. Chadwick;N. Chakraborty;R. Chalme-Calvet;R. Chaves;M. Chr'etien;S. Colafrancesco;G. Cologna;J. Conrad;Camille Couturier;Y. Cui;I. Davids;B. Degrange;C. Deil;P. deWilt;A. Djannati-Atai;W. Domainko;A. Donath;L. Drury;G. Dubus;K. Dutson;J. Dyks;M. Dyrda;T. Edwards;K. Egberts;P. Eger;P. Espigat;C. Farnier;S. Fegan;F. Feinstein;M. V. Fernandes;D. Fernandez;A. Fiasson;G. Fontaine;A. Forster;M. Fussling;S. Gabici;M. Gajdus;Y. Gallant;T. Garrigoux;G. Giavitto;B. Giebels;J. Glicenstein;D. Gottschall;M. Grondin;M. Grudzi'nska;D. Hadasch;S. Haffner;J. Hahn;J. Harris;G. Heinzelmann;G. Henri;G. Hermann;O. Hervet;A. Hillert;J. Hinton;W. Hofmann;P. Hofverberg;M. Holler;D. Horns;A. Ivascenko;A. Jacholkowska;C. Jahn;M. Jamrozy;M. Janiak;F. Jankowsky;I. Jung-Richardt;M. Kastendieck;K. Katarzy'nski;U. Katz;S. Kaufmann;B. Kh'elifi;M. Kieffer;S. Klepser;D. Klochkov;W. Klu'zniak;D. Kolitzus;N. Komin;K. Kosack;S. Krakau;F. Krayzel;P. Kruger;H. Laffon;G. Lamanna;J. Lefaucheur;V. Lefranc;A. Lemière;M. Lemoine-Goumard;J. Lenain;T. Lohse;A. Lopatin;C.-C. Lu-C.;V. Marandon;A. Marcowith;R. Marx;G. Maurin;N. Maxted;M. Mayer;T. Mccomb;J. M'ehault;P. Meintjes;U. Menzler;M. Meyer;A. Mitchell;R. Moderski;M. Mohamed;K. Moraa;E. Moulin;T. Murach;M. Naurois;J. Niemiec;S. Nolan;L. Oakes;H. Odaka;S. Ohm;B. Opitz;M. Ostrowski;I. Oya;M. Panter;R. Parsons;M. Arribas;N. Pekeur;G. Pelletier;P. Petrucci;B. Peyaud;S. Pita;H. Poon;G. Puhlhofer;M. Punch;A. Quirrenbach;S. Raab;I. Reichardt;A. Reimer;O. Reimer;M. Renaud;R. Reyes;F. Rieger;C. Romoli;S. Rosier-Lees;G. Rowell;B. Rudak;C. Rulten;V. Sahakian;D. Salek;D. Sanchez;A. Santangelo;R. Schlickeiser;F. Schussler;A. Schulz;U. Schwanke;S. Schwarzburg;S. Schwemmer;H. Sol;F. Spanier;G. Spengler;F. Spies;L. Stawarz;R. Steenkamp;C. Stegmann;F. Stinzing;K. Stycz;I. Sushch;J. Tavernet;T. Tavernier;A. Taylor;R. Terrier;M. Tluczykont;C. Trichard;K. Valerius;C. Eldik;B. V. Soelen;G. Vasileiadis;J. Veh;C. Venter;A. Viana;P. Vincent;J. Vink;H. Volk;F. Volpe;M. Vorster;T. Vuillaume;S. Wagner;P. Wagner;R. Wagner;M. Ward;M. Weidinger;Q. Weitzel;R. White;A. Wierzcholska;P. Willmann;A. Wornlein;D. Wouters;R. Yang;V. Zabalza;D. Zaborov;M. Zacharias;A. Zdziarski;A. Zech;H. Zechlin;Y. Fukui
弥散伽马射线发射是高能天体宇宙线相互作用最显著的可观测特征。虽然已经在GeVEnergy进行了几十年的研究，但对TeVEnergy弥漫伽马射线发射的评估仍然很少。在完成对银河系内部的系统调查后，H.E.S.S.实验处于观测TeVEnergy大范围漫反射发射的首要位置。H.E.S.S.银河平面勘测的数据是在已知伽马射线源以外的区域进行调查的。相应的伽马射线通量测量是在广泛的天体位置网格上进行的。观测到的伽马射线通量的纵向和纬度分布显示出不属于已知伽马射线源的特征超额发射。首次使用大气切伦科夫成像望远镜观测到沿银河系平面的大规模伽马射线发射。虽然背景减去技术限制了在H.E.SS视场或更大范围内恢复适度变化的能力，这是逆康普顿散射诱导的银河漫反射发射的特征，但中性介子衰变以及来自未分辨伽马射线源的发射的贡献可以在观测信号中恢复到很大一部分。计算表明，pi(0)衰变的最小伽马射线辐射对总信号的贡献很大。这次探测被解释为弥漫的银河系伽马射线发射和未分辨来源的混合。
Diffuse gamma-ray emission is the most prominent observable signature of celestial cosmic-ray interactions at high energies. While already being investigated at GeVenergies over several decades, assessments of diffuse gamma-ray emission at TeVenergies remain sparse. After completion of the systematic survey of the inner Galaxy, the H.E.S.S. experiment is in a prime position to observe large-scale diffuse emission at TeVenergies. Data of the H.E.S.S. Galactic Plane Survey are investigated in regions off known gamma-ray sources. Corresponding gamma-ray flux measurements were made over an extensive grid of celestial locations. Longitudinal and latitudinal profiles of the observed gamma-ray fluxes show characteristic excess emission not attributable to known gamma-ray sources. For the first time large-scale gamma-ray emission along the Galactic plane using imaging atmospheric Cherenkov telescopes has been observed. While the background subtraction technique limits the ability to recover modest variation on the scale of the H.E.S.S. field of view or larger, which is characteristic of the inverse Compton scatter-induced Galactic diffuse emission, contributions of neutral pion decay as well as emission from unresolved gamma-ray sources can be recovered in the observed signal to a large fraction. Calculations show that the minimum gamma-ray emission from pi(0) decay represents a significant contribution to the total signal. This detection is interpreted as a mix of diffuse Galactic gamma-ray emission and unresolved sources.