RT Journal Article
T1 Observations of the magnetars 4U 0142+61 and 1E 2259+586 with the MAGIC telescopes (Research Note)
A1 Antoranz Canales, Pedro
A1 Barrio Uña, Juan Abel
A1 Contreras González, José Luis
A1 Fonseca González, Mª Victoria
A1 López Moya, Marcos
A1 Miranda Pantoja, José Miguel
A1 Nieto, Daniel
A1 Satalecka, Konstanzja
A1 Scapin, Valeria
AB Context. Magnetars are an extreme, highly magnetized class of isolated neutron stars whose large X-ray luminosity is believed to be driven by their high magnetic field. Aims. We study for the first time the possible very high energy gamma-ray emission above 100 GeV from magnetars, observing the sources 4U 0142+ 61 and 1E 2259+586. Methods. We observed the two sources with atmospheric Cherenkov telescopes in the very high energy range (E > 100 GeV). 4U0142+61 was observed with the MAGIC I telescope in 2008 for about 25 h and 1E 2259+586 was observed with the MAGIC stereoscopic system in 2010 for about 14 h. The data were analyzed with the standard MAGIC analysis software. Results. Neither magnetar was detected. Upper limits to the differential and integral flux above 200 GeV were computed using the Rolke algorithm. We obtain integral upper limits to the flux of 1.52 x 10(-12) cm(-2) s(-1) and 2.7 x 10(-12) cm(-2) s(-1) with a confidence level of 95% for 4U 0142+ 61 and 1E 2259+586, respectively. The resulting differential upper limits are presented together with X-ray data and upper limits in the GeV energy range.
PB EDP Sciencies
SN 0004-6361
YR 2013
FD 2013-01
LK https://hdl.handle.net/20.500.14352/33493
UL https://hdl.handle.net/20.500.14352/33493
LA eng
NO Abdo, A. A., Ackermann, M., Ajello, M., et al., 2010, ApJ, 725, L73.Albert, J., Aliu, E., Anderhub, H., et al., 2008, ApJ, 674, 1037.Aleksić, J., Álvarez, E. A., Antonelli, L. A., et al., 2012, Astroparticle Physics, 35, 435.Şaşmaz Muş, S., Göğüs, E., 2010, ApJ, 723, 100.Cheng, K. S., Zhang, L., 2001, ApJ, 562, 918.den Hartog, P. R., Hermsen, W., Kuiper, L., et al., 2006, A&A, 451, 587.den Hartog, P. R., Kuiper, L., Hermsen, W., et al., 2008, A&A, 489, 245.Duncan, R. C., Thompson, C., 1992, ApJ, 392, L9.Gavriil, F. P., Kaspi, V. M., 2002, ApJ, 567, 1067.González, M. E., Dib, R., Kaspi, V. M., et al., 2010, ApJ, 716, 1345.Guenette, R., et al., 2009, for the VERITAS Collaboration, in Proc. 31st ICRC (Łodz) (arXiv:0908.0717).Harding, A. K., Lai, D., 2006, Reports on Progress in Physics, 69, 2631.Içdem, B., Baykal, A., Inam, S. C., 2012, MNRAS, 419, 3109.Israel, G. L., Mereghetti, S., Stella, L., 1994, ApJ, 433, L25.Israel, G. L., Oosterbroek, T., Angelini, L., et al., 1999, A&A, 346, 929.Kaspi, V. M., Gavriil, F. P., Woods, P. M., et al., 2003, ApJ, 588, L93.Kuiper, L., Hermsen, W., den Hartog, P. R., Collmar, W., 2006, ApJ, 645, 556.Li, T.-P., Ma, Y.-Q., 1983, ApJ, 272, 317.McGill Pulsar Group, 2012, McGill SGR/AXP Online Catalog, http://www.physics.mcgill.ca/∼pulsar/magnetar/main.html.Mereghetti, S., 2008, A&A Rev., 15, 225.Moralejo, A., Gaug, M., Carmona, E., et al., 2009, in Proc. 31st ICRC (Łodz) (arXiv:0907.0943).Patel, S. K., Kouveliotou, C., Woods, P. M., et al., 2003, ApJ, 587, 367.Rea, N., Esposito, P., 2011, in High-Energy Emission from Pulsars and their Systems, ed. D. F. Torres & N. Rea, 247.Rea, N., Esposito, P., Turolla, R., et al., 2010, Science, 330, 944.Rea, N., Israel, G. L., Esposito, P., et al., 2012, The Astrophysical Journal, 754, 27Rea, N., Nichelli, E., Israel, G. L., et al., 2007a, MNRAS, 381, 293.Rea, N., Turolla, R., Zane, S., et al., 2007b, ApJ, 661, L65.Rolke, W. A., López, A. M., Conrad, J., 2005, Nuclear Instruments and Methods in Physics Research A, 551, 493.Rowell, G., et al., 2011, for the H.E.S.S. Collaboration, Phases of Late Stage Stellar Evolution, Macquarie Univ. Sydney 5-7 Dec. 2011.Schönfelder, V., 2004, New A Rev., 48, 193.Thompson, C., Duncan, R. C., 1993, ApJ, 408, 194.Thompson, C., Duncan, R. C., 1995, MNRAS, 275, 255.Thompson, C., Duncan, R. C., 1996, ApJ, 473, 322.Tong, H., Song, L. M., Xu, R. X., 2011, ApJ, 738, 31.Vink, J., Kuiper, L., 2006, MNRAS, 370, L14.White, N. E., Mason, K. O., Giommi, P., et al., 1987, MNRAS, 226, 645.Woods, P. M., Kaspi, V. M., Thompson, C., et al., 2004, ApJ, 605, 378.Woods, P. M., Thompson, C., 2006, Soft gamma repeaters and anomalous Xray pulsars: magnetar candidates, ed. W. H. G. Lewin & M. van der Klis, 547–586.Zhang, L., Cheng, K. S., 1997, ApJ, 487, 370.Zhu, W., Kaspi, V. M., Dib, R., et al., 2008, ApJ, 686, 520.
NO © ESO 2012. We would like to thank the Instituto de Astrofísica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The support of the German BMBF and MPG, the Italian INFN, the Swiss National Fund SNF, and the Spanish MICINN is gratefully acknowledged. This work was also supported by the CPAN CSD2007-00042 and MultiDark CSD2009-00064 projects of the Spanish Consolider-Ingenio 2010 programme, by grant DO02-353 of the Bulgarian NSF, by grant 127740 of the Academy of Finland, by the DFG Cluster of Excellence “Origin and Structure of the Universe”, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, and by the Polish MNiSzW grant 745/N-HESSMAGIC/2010/0.
NO German BMBF
NO German MPG
NO Italian INFN
NO Swiss National Fund SNF
NO Spanish MICINN
NO Spanish Consolider-Ingenio 2010 programme
NO Bulgarian NSF
NO Academy of Finland
NO DFG Cluster of Excellence “Origin and Structure of the Universe”
NO DFG Collaborative Research Centers
NO Polish MNiSzW
DS Docta Complutense
RD 30 abr 2024