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2009ApJ...699L.102A - Astrophys. J., 699, L102-L107 (2009/July-2)

Discovery of pulsations from the pulsar J0205+6449 in SNR 3C 58 with the Fermi gamma-ray space telescope.

ABDO A.A., ACKERMANN M., AJELLO M., ATWOOD W.B., AXELSSON M., BALDINI L., BALLET J., BARBIELLINI G., BASTIERI D., BAUGHMAN B.M., BECHTOL K., BELLAZZINI R., BERENJI B., BLANDFORD R.D., BLOOM E.D., BONAMENTE E., BORGLAND A.W., BOUVIER A., BREGEON J., BREZ A., BRIGIDA M., BRUEL P., BURNETT T.H., CALIANDRO G.A., CAMERON R.A., CAMILO F., CARAVEO P.A., CASANDJIAN J.M., CECCHI C., CELIK O., CHEKHTMAN A., CHEUNG C.C., CHIANG J., CIPRINI S., CLAUS R., COGNARD I., COHEN-TANUGI J., CONRAD J., DERMER C.D., DE ANGELIS A., DE PALMA F., DIGEL S.W., DORMODY M., DO COUTO E SILVA E., DRELL P.S., DUBOIS R., DUMORA D., EDMONDS Y., ESPINOZA C., FARNIER C., FAVUZZI C., FOCKE W.B., FRAILIS M., FREIRE P.C.C., FUKAZAWA Y., FUSCO P., GARGANO F., GEHRELS N., GERMANI S., GIEBELS B., GIGLIETTO N., GIORDANO F., GLANZMAN T., GODFREY G., GRENIER I.A., GRONDIN M.-H., GROVE J.E., GUILLEMOT L., GUIRIEC S., HANABATA Y., HARDING A.K., HAYASHIDA M., HAYS E., HOBBS G., HUGHES R.E., JOHANNESSON G., JOHNSON A.S., JOHNSON R.P., JOHNSON T.J., JOHNSON W.N., JOHNSTON S., KAMAE T., KASPI V.M., KATAGIRI H., KATAOKA J., KAWAI N., KEITH M., KERR M., KNODLSEDER J., KRAMER M., KUEHN F., KUSS M., LANDE J., LATRONICO L., LEMOINE-GOUMARD M., LIVINGSTONE M., LONGO F., LOPARCO F., LOTT B., LOVELLETTE M.N., LUBRANO P., LYNE A.G., MAKEEV A., MANCHESTER R.N., MARELLI M., MAZZIOTTA M.N., McENERY J.E., MEURER C., MICHELSON P.F., MITTHUMSIRI W., MIZUNO T., MOISEEV A.A., MONTE C., MONZANI M.E., MORSELLI A., MOSKALENKO I.V., MURGIA S., NOLAN P.L., NUSS E., OHSUGI T., OMODEI N., ORLANDO E., ORMES J.F., PANEQUE D., PANETTA J.H., PARENT D., PELASSA V., PEPE M., PESCE-ROLLINS M., PIERBATTISTA M., PIRON F., PORTER T.A., RAINO S., RANDO R., RANSOM S.M., RAZZANO M., REIMER A., REIMER O., REPOSEUR T., RITZ S., ROCHESTER L.S., RODRIGUEZ A.Y., ROMANI R.W., RYDE F., SADROZINSKI H.F.-W., SANCHEZ D., SANDER A., SAZ PARKINSON P.M., SGRO C., SISKIND E.J., SMITH D.A., SMITH P.D., SPANDRE G., SPINELLI P., STAPPERS B.W., STRIANI E., STRICKMAN M.S., SUSON D.J., TAJIMA H., TAKAHASHI H., TANAKA T., THAYER J.B., THAYER J.G., THEUREAU G., THOMPSON D.J., THORSETT S.E., TIBALDO L., TORRES D.F., TOSTI G., TRAMACERE A., UCHIYAMA Y., USHER T.L., VAN ETTEN A., VASILEIOU V., VILCHEZ N., VITALE V., WAITE A.P., WANG P., WATTERS K., WELTEVREDE P., WINER B.L., WOOD K.S., YLINEN T. and ZIEGLER M.

Abstract (from CDS):

We report the discovery of γ-ray pulsations (≥0.1 GeV) from the young radio and X-ray pulsar PSR J0205+6449 located in the Galactic supernova remnant 3C 58. Data in the γ-ray band were acquired by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope (formerly GLAST), while the radio rotational ephemeris used to fold γ-rays was obtained using both the Green Bank Telescope and the Lovell telescope at Jodrell Bank. The light curve consists of two peaks separated by 0.49±0.01 ±0.01 cycles which are aligned with the X-ray peaks. The first γ-ray peak trails the radio pulse by 0.08±0.01±0.01, while its amplitude decreases with increasing energy as for the other γ-ray pulsars. Spectral analysis of the pulsed γ-ray emission suggests a simple power law of index -2.1 ±0.1±0.2 with an exponential cutoff at 3.0+1.1–0.7± 0.4 GeV. The first uncertainty is statistical and the second is systematic. The integral γ-ray photon flux above 0.1 GeV is (13.7±1.4±3.0)x10–8/cm2/s, which implies for a distance of 3.2 kpc and assuming a broad fan-like beam a luminosity of 8.3x1034 erg/s and an efficiency η of 0.3%. Finally, we report a 95% upper limit on the flux of 1.7x10–8/cm2/s for off-pulse emission from the object.

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Journal keyword(s): pulsars: general - stars: neutron

Simbad objects: 10

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