HESS J1857+026 is a pulsar wind nebula located approximately 9 kpc (29 kly) from Earth in the constellation of Aquila.
| Nebula | |
|---|---|
| Pulsar wind nebula | |
| Observation data: J2000 epoch | |
| Right ascension | 18h 56m 50.8s[1] |
| Declination | ±2° 45′ 50.2″[1] |
| Distance | ~9000[2] pc |
| Constellation | Aquila |
| Physical characteristics | |
| Dimensions | 0.11° x 0.08°[3] |
HESS J1857+026 releases γ-rays in the range of 0.8−45 TeV.[2] It is most likely powered by PSR J1856+0245, a pulsar located nearby.[4]
References
edit- ^ a b Rousseau, R.; Grondin, M.-H.; Van Etten, A.; Lemoine-Goumard, M.; Bogdanov, S.; Hessels, J. W. T.; Kaspi, V. M.; Arzoumanian, Z.; Camilo, F.; Casandjian, J. M.; Espinoza, C. M.; Johnston, S.; Lyne, A. G.; Smith, D. A.; Stappers, B. W.; Caliandro, G. A. (17 July 2012). "Fermi-LAT constraints on the pulsar wind nebula nature of HESS J1857+026". Astronomy & Astrophysics. 544: A3. arXiv:1206.3324. Bibcode:2012A&A...544A...3R. doi:10.1051/0004-6361/201118685. S2CID 55797576. Retrieved 3 June 2017.
- ^ a b Aleksić, J.; Ansoldi, S.; Antonelli, L. A.; Antoranz, P.; Babic, A.; Bangale, P.; Barres de Almeida, U.; Barrio, J. A.; Becerra González, J.; Bednarek, W.; et al. (17 November 2014). "MAGIC reveals a complex morphology within the unidentified gamma-ray source HESS J1857+026". Astronomy & Astrophysics. 571: A96. arXiv:1401.7154. Bibcode:2014A&A...571A..96M. doi:10.1051/0004-6361/201423517. S2CID 3857390. Retrieved 3 June 2017.
- ^ Aharonian, F.; Akhperjanian, A. G.; Barres de Almeida, U.; Bazer-Bachi, A. R.; Behera, B.; Beilicke, M.; Benbow, W.; Bernlöhr, K.; Boisson, C.; Bolz, O.; et al. (January 2008). "HESS very-high-energy gamma-ray sources without identified counterparts". Astronomy and Astrophysics. 477 (1): 353–363. arXiv:0712.1173. Bibcode:2008A&A...477..353A. doi:10.1051/0004-6361:20078516. S2CID 54009812. Retrieved 3 June 2017.
- ^ Hessels, J. W. T.; Nice, D. J.; Gaensler, B. M.; Kaspi, V. M.; Lorimer, D. R.; Champion, D. J.; Lyne, A. G.; Kramer, M.; Cordes, J. M.; Freire, P. C. C.; Camilo, F.; Ransom, S. M.; Deneva, J. S.; Bhat, N. D. R.; Cognard, I.; Crawford, F.; Jenet, F. A.; Kasian, L.; Lazarus, P.; Leeuwen, J. van; McLaughlin, M. A.; Stairs, I. H.; Stappers, B. W.; Venkataraman, A. (8 July 2008). "PSR J1856+0245: Arecibo Discovery of a Young, Energetic Pulsar Coincident with the TeV γ-Ray Source HESS J1857+026". The Astrophysical Journal Letters. 682 (1): L41–L44. arXiv:0806.1200. Bibcode:2008ApJ...682L..41H. doi:10.1086/590908. ISSN 1538-4357. S2CID 16395083.
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