Investigation of the Nonthermal X-Ray Emission from the Supernova Remnant CTB 37B Hosting the Magnetar CXOU J171405.7-381031

被引：0
作者：
Kim, Chanho [1 ]
Park, Jaegeun [1 ]
An, Hongjun [1 ]
Mori, Kaya [2 ]
Reynolds, Stephen P. [3 ]
Safi-Harb, Samar [4 ]
Zhang, Shuo [5 ]
机构：
[1] Chungbuk Natl Univ, Dept Astron & Space Sci, Cheongju 28644, South Korea
[2] Columbia Astrophys Lab, 550 West 120th St, New York, NY 10027 USA
[3] NC State Univ, Phys Dept, Raleigh, NC 27695 USA
[4] UNIV MANITOBA, Dept Phys & Astron, WINNIPEG, MB R3T 2N2, Canada
[5] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
来源：
ASTROPHYSICAL JOURNAL | 2024年 / 977卷 / 02期
基金：
加拿大自然科学与工程研究理事会; 新加坡国家研究基金会;
关键词：
MOLECULAR CLOUDS; NUSTAR DETECTION; ENERGY; ELECTRONS; BREMSSTRAHLUNG; ACCELERATION; RADIO;
D O I：
10.3847/1538-4357/ad938c
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a detailed X-ray investigation of a region (S1) exhibiting nonthermal X-ray emission within the supernova remnant (SNR) CTB 37B hosting the magnetar CXOU J171405.7-381031. Previous analyses modeled this emission with a power law (PL), inferring various values for the photon index (Gamma) and absorbing column density (N H). Based on these, S1 was suggested to be an SNR shell, a background pulsar wind nebula, or an interaction region between the SNR and a molecular cloud. Our analysis of a larger data set favors a steepening (broken or curved PL) spectrum over a straight PL, with the best-fit broken power-law (BPL) parameters of Gamma = 1.23 +/- 0.23 and 2.24 +/- 0.16 below and above a break at 5.57 +/- 0.52 keV, respectively. However, a simple PL or srcut model cannot be definitively ruled out. For the BPL model, the inferred N H = (4.08 +/- 0.72) x 1022 cm-2 towards S1 is consistent with that of the SNR, suggesting a physical association. The BPL-inferred spectral break Delta Gamma approximate to 1 and hard Gamma can be naturally explained by a nonthermal bremsstrahlung (NTB) model. We present an evolutionary NTB model that reproduces the observed spectrum, which indicates the presence of subrelativistic electrons within S1. However, alternate explanations for S1, an unrelated PWN or the SNR shock with unusually efficient acceleration, cannot be ruled out. We discuss these explanations and their implications for gamma-ray emission from CTB 37B and describe future observations that could settle the origin of S1.
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页数：9
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共 52 条
  • [1] The population of TeV pulsar wind nebulae in the HESS Galactic Plane Survey
    Abdalla, H.
    Abramowski, A.
    Aharonian, F.
    Benkhali, F. Ait
    Akhperjanian, A. G.
    Andersson, T.
    Anguener, E. O.
    Arrieta, M.
    Aubert, P.
    Backes, M.
    Balzer, A.
    Barnard, M.
    Becherini, Y.
    Tjus, J. Becker
    Berge, D.
    Bernhard, S.
    Bernloehr, K.
    Blackwell, R.
    Boettcher, M.
    Boisson, C.
    Bolmont, J.
    Bordas, P.
    Bregeon, J.
    Brun, F.
    Brun, P.
    Bryan, M.
    Bulik, T.
    Capasso, M.
    Carr, J.
    Carrigan, S.
    Casanova, S.
    Cerruti, M.
    Chakraborty, N.
    Chalme-Calvet, R.
    Chaves, R. C. G.
    Chen, A.
    Chevalier, J.
    Chretien, M.
    Colafrancesco, S.
    Cologna, G.
    Condon, B.
    Conrad, J.
    Couturier, C.
    Cui, Y.
    Davids, I. D.
    Degrange, B.
    Deil, C.
    Devin, J.
    dewilt, P.
    Dirson, L.
    [J]. ASTRONOMY & ASTROPHYSICS, 2018, 612
  • [2] Fermi Large Area Telescope Fourth Source Catalog
    Abdollahi, S.
    Acero, F.
    Ackermann, M.
    Ajello, M.
    Atwood, W. B.
    Axelsson, M.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Becerra Gonzalez, J.
    Bellazzini, R.
    Berretta, A.
    Bissaldi, E.
    Blandford, R. D.
    Bloom, E. D.
    Bonino, R.
    Bottacini, E.
    Brandt, T. J.
    Bregeon, J.
    Bruel, P.
    Buehler, R.
    Burnett, T. H.
    Buson, S.
    Cameron, R. A.
    Caputo, R.
    Caraveo, P. A.
    Casandjian, J. M.
    Castro, D.
    Cavazzuti, E.
    Charles, E.
    Chaty, S.
    Chen, S.
    Cheung, C. C.
    Chiaro, G.
    Ciprini, S.
    Cohen-Tanugi, J.
    Cominsky, L. R.
    Coronado-Blazquez, J.
    Costantin, D.
    Cuoco, A.
    Cutini, S.
    D'Ammando, F.
    DeKlotz, M.
    Luque, P. de la Tone
    de Palma, F.
    Desai, A.
    Digel, S. W.
    Di Lalla, N.
    Di Mauro, M.
    [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020, 247 (01)
  • [3] Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
    Ackermann, M.
    Ajello, M.
    Allafort, A.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Baring, M. G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bottacini, E.
    Brandt, T. J.
    Bregeon, J.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Busetto, G.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Casandjian, J. M.
    Cecchi, C.
    Celik, O.
    Charles, E.
    Chaty, S.
    Chaves, R. C. G.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Chiaro, G.
    Cillis, A. N.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Cominsky, L. R.
    Conrad, J.
    Corbel, S.
    Cutini, S.
    D'Ammando, F.
    de Angelis, A.
    de Palma, F.
    Dermer, C. D.
    do Couto e Silva, E.
    Drell, P. S.
    Drlica-Wagner, A.
    [J]. SCIENCE, 2013, 339 (6121) : 807 - 811
  • [4] Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy
    Actis, M.
    Agnetta, G.
    Aharonian, F.
    Akhperjanian, A.
    Aleksic, J.
    Aliu, E.
    Allan, D.
    Allekotte, I.
    Antico, F.
    Antonelli, L. A.
    Antoranz, P.
    Aravantinos, A.
    Arlen, T.
    Arnaldi, H.
    Artmann, S.
    Asano, K.
    Asorey, H.
    Baehr, J.
    Bais, A.
    Baixeras, C.
    Bajtlik, S.
    Balis, D.
    Bamba, A.
    Barbier, C.
    Barcelo, M.
    Barnacka, A.
    Barnstedt, J.
    de Almeida, U. Barres
    Barrio, J. A.
    Basso, S.
    Bastieri, D.
    Bauer, C.
    Becerra, J.
    Becherini, Y.
    Bechtol, K.
    Becker, J.
    Beckmann, V.
    Bednarek, W.
    Behera, B.
    Beilicke, M.
    Belluso, M.
    Benallou, M.
    Benbow, W.
    Berdugo, J.
    Berger, K.
    Bernardino, T.
    Bernloehr, K.
    Biland, A.
    Billotta, S.
    Bird, T.
    [J]. EXPERIMENTAL ASTRONOMY, 2011, 32 (03) : 193 - 316
  • [5] Chandra and HESS observations of the supernova remnant CTB 37B
    Aharonian, F.
    Akhperjanian, A. G.
    de Almeida, U. Barres
    Bazer-Bachi, A. R.
    Behera, B.
    Beilicke, M.
    Benbow, W.
    Bernloehr, K.
    Boisson, C.
    Borrel, V.
    Braun, I.
    Brion, E.
    Brucker, J.
    Buehler, R.
    Bulik, T.
    Buesching, I.
    Boutelier, T.
    Carrigan, S.
    Chadwick, P. M.
    Chaves, R. C. G.
    Chounet, L. -M.
    Clapson, A. C.
    Coignet, G.
    Cornils, R.
    Costamante, L.
    Dalton, M.
    Degrange, B.
    Dickinson, H. J.
    Djannati-Atai, A.
    Domainko, W.
    Drury, L. O'C.
    Dubois, F.
    Dubus, G.
    Dyks, J.
    Egberts, K.
    Emmanoulopoulos, D.
    Espigat, P.
    Farnier, C.
    Feinstein, F.
    Fiasson, A.
    Foerster, A.
    Fontaine, G.
    Funk, S.
    Fuessling, M.
    Gabici, S.
    Gallant, Y. A.
    Giebels, B.
    Glicenstein, J. F.
    Glueck, B.
    Goret, P.
    [J]. ASTRONOMY & ASTROPHYSICS, 2008, 486 (03): : 829 - 836
  • [6] Discovery of very high energy gamma-ray emission coincident with molecular clouds in the W 28 (G6.4-0.1) field
    Aharonian, F.
    Akhperjanian, A. G.
    Bazer-Bachi, A. R.
    Behera, B.
    Beilicke, M.
    Benbow, W.
    Berge, D.
    Bernloehr, K.
    Boisson, C.
    Bolz, O.
    Borrel, V.
    Braun, I.
    Brion, E.
    Brown, A. M.
    Buehler, R.
    Bulik, T.
    Buesching, I.
    Boutelier, T.
    Carrigan, S.
    Chadwick, P. M.
    Chounet, L. -M.
    Clapson, A. C.
    Coignet, G.
    Cornils, R.
    Costamante, L.
    Degrange, B.
    Dickinson, H. J.
    Djannati-Atai, A.
    Domainko, W.
    Drury, L. O'C.
    Dubus, G.
    Dyks, J.
    Egberts, K.
    Emmanoulopoulos, D.
    Espigat, P.
    Farnier, C.
    Feinstein, F.
    Fiasson, A.
    Foerster, A.
    Fontaine, G.
    Fukui, Y.
    Funk, Seb.
    Funk, S.
    Fuessling, M.
    Gallant, Y. A.
    Giebels, B.
    Glicenstein, J. F.
    Glueck, B.
    Goret, P.
    Hadjichristidis, C.
    [J]. ASTRONOMY & ASTROPHYSICS, 2008, 481 (02) : 401 - U69
  • [7] Aharonian FA, 1996, ASTRON ASTROPHYS, V309, P917
  • [8] ABUNDANCES OF THE ELEMENTS - METEORITIC AND SOLAR
    ANDERS, E
    GREVESSE, N
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 1989, 53 (01) : 197 - 214
  • [9] Arnaud KA, 1996, ASTR SOC P, V101, P17
  • [10] Spectral break of energetic pulsar wind nebulae detected with wideband X-ray observations
    Bamba, Aya
    Shibata, Shinpei
    Tanaka, Shuta J.
    Mori, Koji
    Uchida, Hiroyuki
    Terada, Yukikatsu
    Ishizaki, Wataru
    [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2022, 74 (05) : 1186 - 1197
123456