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Pregled bibliografske jedinice broj: 687318

Časopis

Autori: Aleksić, Jelena; ...; Babić, Ana; ...; Dominis Prester, Dijana; ...; Ferenc, Daniel; ...; Godinović, Nikola; ...; Hrupec, Dario; ...; Lelas, Damir; ...; Puljak, Ivica; ...; Surić, Tihomir; ...; Šnidarić, Iva; ...; Terzić, Tomislav; ...; Zanin, R.
Naslov: MAGIC reveals a complex morphology within the unidentified gamma-ray source HESS J1857+026
Izvornik: Astronomy and astrophysics (0004-6361) 571 (2014); A96-1-A96-8
Vrsta rada: članak
Ključne riječi: acceleration of particles; gamma-rays: ISM; ISM: clouds; Hii regions; ISM: individual objects: HESS J1857+026; pulsars: individual: PSR J1856+0245
Sažetak:
HESS J1857+026 is an extended TeV gamma-ray source that was discovered by H.E.S.S. as part of its Galactic plane survey. Given its broadband spectral energy distribution and its spatial coincidence with the young energetic pulsar PSR J1856+024, the source has been put forward as a pulsar wind nebula (PWN) candidate. MAGIC has performed follow-up observations aimed at mapping the source down to energies approaching 100 GeV in order to better understand its complex morphology. HESS J1857+026 was observed by MAGIC in 2010, yielding 29 hours of good quality stereoscopic data that allowed us to map the source region in two separate ranges of energy. We present an energy spectrum of the region, which bridges the gap between the GeV emission measured by Fermi-LAT and the multi-TeV emission measured by H.E.S.S., together with a detailed analysis of its energy-dependent morphology. We couple these results with archival multi-wavelength data and outline evidence in favor of a two- source scenario, whereby one source is associated with a PWN while the other could be linked with a molecular cloud complex containing a HII region and a possible gas cavity.
Projekt / tema: HRZZ-09/176
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Puni text rada: 687318.HESSJ1857026.pdf
URL Internet adrese: http://fulir.irb.hr/1667/
http://www.aanda.org/articles/aa/abs/2014/11/aa23517-14/aa23517-14.html
http://arxiv.org/abs/1401.7154
Broj citata:
Altmetric:
DOI: 10.1051/0004-6361/201423517
URL cjelovitog teksta: http://fulir.irb.hr/1667/
Google Scholar: MAGIC reveals a complex morphology within the unidentified gamma-ray source HESS J1857+026
Upisao u CROSBI: Dario Hrupec (Dario.Hrupec@irb.hr), 7. Vel. 2014. u 14:42 sati



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