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Pregled bibliografske jedinice broj: 903950

MAGIC detects activity from PKS 1424+240 at very- high-energy gamma rays


(MAGIC Collaboration) Mirzoyan, Razmik; ...; Babić, Ana; ...; Dominis Prester, Dijana; ...; Godinović, Nikola; ...; Hrupec, Dario; ... et al.
MAGIC detects activity from PKS 1424+240 at very- high-energy gamma rays, 2017. (ostalo).


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Naslov
MAGIC detects activity from PKS 1424+240 at very- high-energy gamma rays

Autori
Mirzoyan, Razmik ; ... ; Babić, Ana ; ... ; Dominis Prester, Dijana ; ... ; Godinović, Nikola ; ... ; Hrupec, Dario ; ... ; Lelas, Damir ; ... ; Puljak, Ivica ; ... ; Surić, Tihomir ; ... ; Šnidarić, Iva ; ... ; Terzić, Tomislav ; ... (the MAGIC Collaboration)

Kolaboracija
MAGIC Collaboration

Izvornik
The Astronomer's Telegram, #10157

Vrsta, podvrsta
Ostale vrste radova, ostalo

Godina
2017

Ključne riječi
Gamma Ray ; TeV ; VHE ; Blazar

Sažetak
The MAGIC telescopes have observed an increase in the very-high-energy (VHE ; >50 GeV) gamma- ray flux from PKS 1424+240, RA: 14:27:00.4 and DEC: +23:48:00, J2000.0 (Wenger, M. et al., 2000, A&AS, v.143, 9). The preliminary analysis of the MAGIC data taken on 2017/03/09, indicates an integral photon flux of (7.6 +/- 2.3) x 10^-11 [cm^-2/s] above 70 GeV. The estimated flux corresponds to 10+/-3 % of the Crab Nebula integral flux above the same energy threshold (70 GeV), and shows a hint of elevated flux in comparison with the previous detections (Archambault, S. et al., 2014, ApJL, 785, 1, L16 and the references therein). PKS 1424+240 is a BL Lac object located at redshift z=0.604 (Paiano et al. 2017, arXiv:1701.04305) and was previously reported as a VHE gamma-ray emitter by VERITAS (Acciari, V.A. et al., 2010, ApJ 708 L100) and MAGIC (Aleksi?, J. et al., 2014, A&A 567, 135). It is the most distant VHE emitter whose source type is confirmed as a BL Lac object. The MAGIC observations were triggered by the hard spectrum in HE gamma-ray band (0.1-300 GeV), estimated from daily analysis of Fermi data, and showing a photon spectral index = -1.47 +/- 0.28 (TS = 25.9) during 2017/03/06 and 2017/03/07. MAGIC will observe PKS 1424+240 tonight and multi- wavelength observations are encouraged. The MAGIC contact persons for these observations are R. Mirzoyan (Razmik.Mirzoyan@mpp.mpg.de), V. Fallah Ramazani (vafara@utu.fi) and Gaia Vanzo (gvanzo@iac.es). MAGIC is a system of two 17m-diameter Imaging Atmospheric Cherenkov Telescopes located at the Canary island of La Palma, Spain, and designed to perform gamma-ray astronomy in the energy range from 50 GeV to greater than 50 TeV.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Fakultet elektrotehnike i računarstva, Zagreb,
Institut "Ruđer Bošković", Zagreb,
Sveučilište u Osijeku - Odjel za fiziku,
Sveučilište u Rijeci - Odjel za fiziku


Citiraj ovu publikaciju:

(MAGIC Collaboration) Mirzoyan, Razmik; ...; Babić, Ana; ...; Dominis Prester, Dijana; ...; Godinović, Nikola; ...; Hrupec, Dario; ... et al.
MAGIC detects activity from PKS 1424+240 at very- high-energy gamma rays, 2017. (ostalo).
(MAGIC Collaboration) (MAGIC Collaboration) Mirzoyan, R., ..., Babić, A., ..., Dominis Prester, D., ..., Godinović, N., ..., Hrupec, D. & ... et al. (2017) MAGIC detects activity from PKS 1424+240 at very- high-energy gamma rays. The Astronomer's Telegram, #10157. Ostalo.
@unknown{unknown, author = {Mirzoyan, Razmik and Babi\'{c}, Ana and Dominis Prester, Dijana and Godinovi\'{c}, Nikola and Hrupec, Dario and Lelas, Damir and Puljak, Ivica and Suri\'{c}, Tihomir and \v{S}nidari\'{c}, Iva and Terzi\'{c}, Tomislav}, year = {2017}, keywords = {Gamma Ray, TeV, VHE, Blazar}, title = {MAGIC detects activity from PKS 1424+240 at very- high-energy gamma rays}, keyword = {Gamma Ray, TeV, VHE, Blazar} }
@unknown{unknown, author = {Mirzoyan, Razmik and Babi\'{c}, Ana and Dominis Prester, Dijana and Godinovi\'{c}, Nikola and Hrupec, Dario and Lelas, Damir and Puljak, Ivica and Suri\'{c}, Tihomir and \v{S}nidari\'{c}, Iva and Terzi\'{c}, Tomislav}, year = {2017}, keywords = {Gamma Ray, TeV, VHE, Blazar}, title = {MAGIC detects activity from PKS 1424+240 at very- high-energy gamma rays}, keyword = {Gamma Ray, TeV, VHE, Blazar} }




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