Discovery of a candidate central compact object in the galactic nonthermal SNR G330.2+1.0

Sangwook Park, Koji Mori, Oleg Kargaltsev, Patrick O. Slane, John P. Hughes, David N. Burrows, Gordon P. Garmire, George G. Pavlov

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24 Scopus citations


We report on the discovery of a pointlike source (CXOU J160103.1-513353) at the center of the Galactic supernova remnant (SNR) G330.2+1.0 with Chandra X-Ray Observatory. The X-ray spectrum fits a blackbody model with kT ∼ 0.49 keV, implying a small emission region of A ∼ 0.4 km at the distance of 5 kpc. The estimated X-ray luminosity is Lx ∼ 1 × 10 33 ergs s-1 in the 1-10 keV band. A power-law model may also fit the observed spectrum, but the fit results in a very large photon index, Γ ∼ 5. We find no counterparts at other wavelengths. The X-ray emission was steady over the ∼13 hr observation period, showing no variability. While we find marginal evidence for X-ray pulsations (P ≈ 7.5 s), the presence of a pulsar at the position of this object is not conclusive with the current data, requiring an independent confirmation. These results are generally consistent with an interpretation of this object as a central compact object associated with SNR G330.2+1.0.

Original languageEnglish (US)
Pages (from-to)L37-L40
JournalAstrophysical Journal
Issue number1 II
StatePublished - Dec 10 2006

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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