Early results from the Chandra X-ray observatory |
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| Institution: | 1. INAF/IASF-Roma, I-00133 Roma, Italy;2. Dip. di Fisica, Univ. Tor Vergata, I-00133 Roma, Italy;3. INAF/IASF-Milano, I-20133 Milano, Italy;4. CIFS-Torino, I-10133 Torino, Italy;5. INAF/IASF-Bologna, I-40129 Bologna, Italy;6. Dip. Fisica and INFN Trieste, I-34127 Trieste, Italy;7. INFN-Pavia, I-27100 Pavia, Italy;8. ENEA-Bologna, I-40129 Bologna, Italy;9. INFN-Roma La Sapienza, I-00185 Roma, Italy;10. CNR-IMIP, Roma, Italy;11. INFN Roma Tor Vergata, I-00133 Roma, Italy;12. Dip. di Fisica, Univ. Dell’Insubria, I-22100 Como, Italy;13. ENEA Frascati, I-00044 Frascati (Roma), Italy;14. ASI Science Data Center, I-00044 Frascati(Roma), Italy;15. Agenzia Spaziale Italiana, I-00198 Roma, Italy;p. Dip. Fisica, Universitá di Torino, Turin, Italy;q. INAF-Osservatorio Astron. di Roma, Monte Porzio Catone, Italy;r. INAF-Osservatorio Astronomico di Cagliari, localita’ Poggio dei Pini, strada 54, I-09012 Capoterra, Italy;s. Dipartimento di Fisica, Universitá dell’Insubria, Via Valleggio 11, I-22100 Como, Italy;t. INAF-IASF Palermo, Via Ugo La Malfa 153, I-90146 Palermo, Italy;1. INAF-IASF Palermo, Via Ugo La Malfa 153, I-90146 Palermo, Italy;2. INAF-IASF Bologna, Via Gobetti 101, I-40129 Bologna, Italy;3. INAF-IASF Milano, Via E. Bassini 15, I-20133 Milano, Italy;4. INAF-IASF Roma, Via Fosso del Cavaliere 100, I-00133 Roma, Italy;5. Dip. di Fisica and INFN, Via Valerio 2, I-34127 Trieste, Italy;6. ENEA Frascati, Vie E. Fermi 45, I-00044 Frascati (Roma), Italy;7. INAF, Oss. Astronomico di Brera, Via Bianchi 46, I-23807 Merate (LC), Italy;8. NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA;9. INAF, Oss. Astronomico di Torino, Via Osservatorio 20, I-10025 Pino Torinese (TO), Italy;1. Department of Physics and Electronics, Dr. R.M.L. Awadh University, Faizabad 224 001, India;2. Department of Physics, DDU Gorakhpur University, Gorakhpur 273009, India;3. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263129, India;4. Center for Astrophysics, Guangzhou University, Guangzhou 510006, China;1. INTEGRAL Science Data Centre, 16 Ch. d''Ecogia, 1290 Versoix, Switzerland;2. Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland;3. Laboratoire d''Astrophysique de Grenoble, BP 43, 38041 Grenoble Cedex 9, France;4. Joint Center for Astrophysics, University of Maryland, Baltimore, MD 21250, USA;5. NASA Goddard Space Flight Center, Code 661, Greenbelt, MD 20771, USA |
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| Abstract: | We present some early results on AGN from the Chandra X-ray Observatory, highlighting high resolution spectroscopy using the High Energy Transmission Grating Spectrometer (HETGS). The quasar PKS 0637–752 was found to have a very bright X-ray jet whose shape is remarkably similar to that of the radio jet on a size scale of 100 kpc, but the X-ray emission is still inexplicably bright. Two BL Lac objects, PKS 2155–304 and Mrk 421, observed with the spectrometer were found to have no strong absorption or emission features. Other radio loud AGN observed with the HETGS show simple power law spectra without obvious features. |
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