Discovery of a point-like very-high-energy γ-ray source in Monoceros

F. A. Aharonian; A. G. Akhperjanian; A. R. Bazer-Bachi; B. Behera; M. Beilicke; W. Benbow; D. Berge; K. Bernlöhr; C. Boisson; O. Bolz; V. Borrel; I. Braun; E. Brion; A. M. Brown; R. Bühler; I. Büsching; T. Boutelier; S. Carrigan; P. M. Chadwick; L. M. Chounet; G. Coignet; R. Cornils; L. Costamante; B. Degrange; H. J. Dickinson; A. Djannati-Ataï; W. Domainko; L. O'C Drury; G. Dubus; K. Egberts; D. Emmanoulopoulos; P. Espigat; C. Farnier; F. Feinstein; A. Fiasson; A. Förster; G. Fontaine; Seb Funk; S. Funk; M. Füßling; Y. A. Gallant; B. Giebels; J. F. Glicenstein; B. Glück; P. Goret; C. Hadjichristidis; D. Hauser; M. Hauser; G. Heinzelmann; M. Ward

doi:10.1051/0004-6361:20077299

Discovery of a point-like very-high-energy γ-ray source in Monoceros

F. A. Aharonian^*, A. G. Akhperjanian, A. R. Bazer-Bachi, B. Behera, M. Beilicke, W. Benbow, D. Berge, K. Bernlöhr, C. Boisson, O. Bolz, V. Borrel, I. Braun, E. Brion, A. M. Brown, R. Bühler, I. Büsching, T. Boutelier, S. Carrigan, P. M. Chadwick, L. M. ChounetG. Coignet, R. Cornils, L. Costamante, B. Degrange, H. J. Dickinson, A. Djannati-Ataï, W. Domainko, L. O'C Drury, G. Dubus, K. Egberts, D. Emmanoulopoulos, P. Espigat, C. Farnier, F. Feinstein, A. Fiasson, A. Förster, G. Fontaine, Seb Funk, S. Funk, M. Füßling, Y. A. Gallant, B. Giebels, J. F. Glicenstein, B. Glück, P. Goret, C. Hadjichristidis, D. Hauser, M. Hauser, G. Heinzelmann, M. Ward

^*Corresponding author for this work

Chemistry

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Abstract

Aims. The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) y-ray emission and two as yet unidentified high-energy EGRET sources. Sensitive VHE observations are required to probe acceleration processes in this region. Methods. The HESS telescope array has been used to search for very high-energy y-ray sources in this region. CO data from the NANTEN telescope were used to map the molecular clouds in the region, which could act as target material for γ-ray production via hadronic interactions. Results. We announce the discovery of a new y-ray source, HESS J0632+057, located close to the rim of the Monoceros SNR. This source is unresolved by HESS and has no clear counterpart at other wavelengths but is possibly associated with the weak X-ray source 1RXS J063258.3+054857, the Be-star MWC 148 and/or the lower energy γ-ray source 3EGJ0634+0521. No evidence for an associated molecular cloud was found in the CO data.

Original language	English (US)
Pages (from-to)	L1-L4
Journal	Astronomy and Astrophysics
Volume	469
Issue number	1
DOIs	https://doi.org/10.1051/0004-6361:20077299
State	Published - Jul 2007

Keywords

Gamma rays: observations

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361:20077299

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Aharonian, F. A., Akhperjanian, A. G., Bazer-Bachi, A. R., Behera, B., Beilicke, M., Benbow, W., Berge, D., Bernlöhr, K., Boisson, C., Bolz, O., Borrel, V., Braun, I., Brion, E., Brown, A. M., Bühler, R., Büsching, I., Boutelier, T., Carrigan, S., Chadwick, P. M., ... Ward, M. (2007). Discovery of a point-like very-high-energy γ-ray source in Monoceros. Astronomy and Astrophysics, 469(1), L1-L4. https://doi.org/10.1051/0004-6361:20077299

@article{e163edcf4443419f8828f251129c8f29,

title = "Discovery of a point-like very-high-energy γ-ray source in Monoceros",

abstract = "Aims. The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) y-ray emission and two as yet unidentified high-energy EGRET sources. Sensitive VHE observations are required to probe acceleration processes in this region. Methods. The HESS telescope array has been used to search for very high-energy y-ray sources in this region. CO data from the NANTEN telescope were used to map the molecular clouds in the region, which could act as target material for γ-ray production via hadronic interactions. Results. We announce the discovery of a new y-ray source, HESS J0632+057, located close to the rim of the Monoceros SNR. This source is unresolved by HESS and has no clear counterpart at other wavelengths but is possibly associated with the weak X-ray source 1RXS J063258.3+054857, the Be-star MWC 148 and/or the lower energy γ-ray source 3EGJ0634+0521. No evidence for an associated molecular cloud was found in the CO data.",

keywords = "Gamma rays: observations",

author = "Aharonian, {F. A.} and Akhperjanian, {A. G.} and Bazer-Bachi, {A. R.} and B. Behera and M. Beilicke and W. Benbow and D. Berge and K. Bernl{\"o}hr and C. Boisson and O. Bolz and V. Borrel and I. Braun and E. Brion and Brown, {A. M.} and R. B{\"u}hler and I. B{\"u}sching and T. Boutelier and S. Carrigan and Chadwick, {P. M.} and Chounet, {L. M.} and G. Coignet and R. Cornils and L. Costamante and B. Degrange and Dickinson, {H. J.} and A. Djannati-Ata{\"i} and W. Domainko and {O'C Drury}, L. and G. Dubus and K. Egberts and D. Emmanoulopoulos and P. Espigat and C. Farnier and F. Feinstein and A. Fiasson and A. F{\"o}rster and G. Fontaine and Seb Funk and S. Funk and M. F{\"u}{\ss}ling and Gallant, {Y. A.} and B. Giebels and Glicenstein, {J. F.} and B. Gl{\"u}ck and P. Goret and C. Hadjichristidis and D. Hauser and M. Hauser and G. Heinzelmann and M. Ward",

year = "2007",

month = jul,

doi = "10.1051/0004-6361:20077299",

language = "English (US)",

volume = "469",

pages = "L1--L4",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "1",

}

Aharonian, FA, Akhperjanian, AG, Bazer-Bachi, AR, Behera, B, Beilicke, M, Benbow, W, Berge, D, Bernlöhr, K, Boisson, C, Bolz, O, Borrel, V, Braun, I, Brion, E, Brown, AM, Bühler, R, Büsching, I, Boutelier, T, Carrigan, S, Chadwick, PM, Chounet, LM, Coignet, G, Cornils, R, Costamante, L, Degrange, B, Dickinson, HJ, Djannati-Ataï, A, Domainko, W, O'C Drury, L, Dubus, G, Egberts, K, Emmanoulopoulos, D, Espigat, P, Farnier, C, Feinstein, F, Fiasson, A, Förster, A, Fontaine, G, Funk, S, Funk, S, Füßling, M, Gallant, YA, Giebels, B, Glicenstein, JF, Glück, B, Goret, P, Hadjichristidis, C, Hauser, D, Hauser, M, Heinzelmann, G & Ward, M 2007, 'Discovery of a point-like very-high-energy γ-ray source in Monoceros', Astronomy and Astrophysics, vol. 469, no. 1, pp. L1-L4. https://doi.org/10.1051/0004-6361:20077299

TY - JOUR

T1 - Discovery of a point-like very-high-energy γ-ray source in Monoceros

AU - Aharonian, F. A.

AU - Akhperjanian, A. G.

AU - Bazer-Bachi, A. R.

AU - Behera, B.

AU - Beilicke, M.

AU - Benbow, W.

AU - Berge, D.

AU - Bernlöhr, K.

AU - Boisson, C.

AU - Bolz, O.

AU - Borrel, V.

AU - Braun, I.

AU - Brion, E.

AU - Brown, A. M.

AU - Bühler, R.

AU - Büsching, I.

AU - Boutelier, T.

AU - Carrigan, S.

AU - Chadwick, P. M.

AU - Chounet, L. M.

AU - Coignet, G.

AU - Cornils, R.

AU - Costamante, L.

AU - Degrange, B.

AU - Dickinson, H. J.

AU - Djannati-Ataï, A.

AU - Domainko, W.

AU - O'C Drury, L.

AU - Dubus, G.

AU - Egberts, K.

AU - Emmanoulopoulos, D.

AU - Espigat, P.

AU - Farnier, C.

AU - Feinstein, F.

AU - Fiasson, A.

AU - Förster, A.

AU - Fontaine, G.

AU - Funk, Seb

AU - Funk, S.

AU - Füßling, M.

AU - Gallant, Y. A.

AU - Giebels, B.

AU - Glicenstein, J. F.

AU - Glück, B.

AU - Goret, P.

AU - Hadjichristidis, C.

AU - Hauser, D.

AU - Hauser, M.

AU - Heinzelmann, G.

AU - Ward, M.

PY - 2007/7

Y1 - 2007/7

N2 - Aims. The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) y-ray emission and two as yet unidentified high-energy EGRET sources. Sensitive VHE observations are required to probe acceleration processes in this region. Methods. The HESS telescope array has been used to search for very high-energy y-ray sources in this region. CO data from the NANTEN telescope were used to map the molecular clouds in the region, which could act as target material for γ-ray production via hadronic interactions. Results. We announce the discovery of a new y-ray source, HESS J0632+057, located close to the rim of the Monoceros SNR. This source is unresolved by HESS and has no clear counterpart at other wavelengths but is possibly associated with the weak X-ray source 1RXS J063258.3+054857, the Be-star MWC 148 and/or the lower energy γ-ray source 3EGJ0634+0521. No evidence for an associated molecular cloud was found in the CO data.

AB - Aims. The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) y-ray emission and two as yet unidentified high-energy EGRET sources. Sensitive VHE observations are required to probe acceleration processes in this region. Methods. The HESS telescope array has been used to search for very high-energy y-ray sources in this region. CO data from the NANTEN telescope were used to map the molecular clouds in the region, which could act as target material for γ-ray production via hadronic interactions. Results. We announce the discovery of a new y-ray source, HESS J0632+057, located close to the rim of the Monoceros SNR. This source is unresolved by HESS and has no clear counterpart at other wavelengths but is possibly associated with the weak X-ray source 1RXS J063258.3+054857, the Be-star MWC 148 and/or the lower energy γ-ray source 3EGJ0634+0521. No evidence for an associated molecular cloud was found in the CO data.

KW - Gamma rays: observations

UR - http://www.scopus.com/inward/record.url?scp=34250836573&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:20077299

DO - 10.1051/0004-6361:20077299

M3 - Article

AN - SCOPUS:34250836573

SN - 0004-6361

VL - 469

SP - L1-L4

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 1

ER -

Discovery of a point-like very-high-energy γ-ray source in Monoceros

Abstract

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