Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/128499
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DC Field | Value | Language |
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dc.contributor.author | Gotthelf, E. V. | - |
dc.contributor.author | Mori, K. | - |
dc.contributor.author | Aliu, E. | - |
dc.contributor.author | Paredes i Poy, Josep Maria | - |
dc.contributor.author | Tomsick, John A. | - |
dc.contributor.author | Boggs, S. E. | - |
dc.contributor.author | Christensen, F. E. | - |
dc.contributor.author | Craig, W. W. | - |
dc.contributor.author | Hailey, C. J. | - |
dc.contributor.author | Harrison, F. A. | - |
dc.contributor.author | Hong, J. S. | - |
dc.contributor.author | Rahoui, F. | - |
dc.contributor.author | Stern, D. | - |
dc.contributor.author | Zhang, W. W. | - |
dc.date.accessioned | 2019-02-20T12:54:47Z | - |
dc.date.available | 2019-02-20T12:54:47Z | - |
dc.date.issued | 2016-07-20 | - |
dc.identifier.issn | 0004-637X | - |
dc.identifier.uri | http://hdl.handle.net/2445/128499 | - |
dc.description.abstract | We present NuSTAR hard X-ray observations of Sh 2-104, a compact H ii region containing several young massive stellar clusters (YMSCs). We have detected distinct hard X-ray sources coincident with localized VERITAS TeV emission recently resolved from the giant gamma-ray complex MGRO J2019+37 in the Cygnus region. Fainter, diffuse X-rays coincident with the eastern YMSC in Sh2-104 likely result from the colliding winds of a component star. Just outside the radio shell of Sh 2-104 lies 3XMM J201744.7+365045 and a nearby nebula, NuSTAR J201744.3+364812, whose properties are most consistent with extragalactic objects. The combined XMM-Newton and NuSTAR spectrum of 3XMM J201744.7+365045 is well-fit to an absorbed power-law model with ${N}_{{\rm{H}}}=(3.1\pm 1.0)\times {10}^{22}$ cm−2 and a photon index ${\rm{\Gamma }}=2.1\pm 0.1$. Based on possible long-term flux variation and the lack of detected pulsations (≤43% modulation), this object is likely a background active galactic nucleus rather than a Galactic pulsar. The spectrum of the NuSTAR nebula shows evidence of an emission line at E = 5.6 keV, suggesting an optically obscured galaxy cluster at z = 0.19 ± 0.02 (d = 800 Mpc) and L X = 1.2 × 1044 erg s−1. Follow-up Chandra observations of Sh 2-104 will help identify the nature of the X-ray sources and their relation to MGRO J2019+37. We also show that the putative VERITAS excess south of Sh 2-104, is most likely associated with the newly discovered Fermi pulsar PSR J2017+3625 and not the H ii region. | - |
dc.format.extent | 7 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Institute of Physics (IOP) | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.3847/0004-637X/826/1/25 | - |
dc.relation.ispartof | Astrophysical Journal, 2016, vol. 826, num. 25 | - |
dc.relation.uri | https://doi.org/10.3847/0004-637X/826/1/25 | - |
dc.rights | (c) American Astronomical Society, 2016 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Astronomia de raigs X | - |
dc.subject.classification | Raigs gamma | - |
dc.subject.classification | Estels de neutrons | - |
dc.subject.other | X-ray astronomy | - |
dc.subject.other | Gamma rays | - |
dc.subject.other | Neutron stars | - |
dc.title | Hard X-Ray emission from Sh 2-104: a NuSTAR search for Gamma-Ray counterparts | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 670201 | - |
dc.date.updated | 2019-02-20T12:54:48Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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670201.pdf | 1.93 MB | Adobe PDF | View/Open |
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