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 Hughes, David N. Burrows, Gordon P. Garmire, George G. Pavlov

Research output: Contribution to journalArticle

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Abstract

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)
JournalAstrophysical Journal
Volume653
Issue number1 II
DOIs
StatePublished - Dec 10 2006

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supernova remnants
x rays
pulsars
erg
observatories
power law
observatory
luminosity
wavelength
photons
wavelengths

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Stars: neutron
  • Supernova remnants
  • X-rays: stars

Cite this

Park, S., Mori, K., Kargaltsev, O., Slane, P. O., Hughes, J., Burrows, D. N., ... Pavlov, G. G. (2006). Discovery of a candidate central compact object in the galactic nonthermal SNR G330.2+1.0. Astrophysical Journal, 653(1 II). https://doi.org/10.1086/510366
Park, Sangwook ; Mori, Koji ; Kargaltsev, Oleg ; Slane, Patrick O. ; Hughes, John ; Burrows, David N. ; Garmire, Gordon P. ; Pavlov, George G. / Discovery of a candidate central compact object in the galactic nonthermal SNR G330.2+1.0. In: Astrophysical Journal. 2006 ; Vol. 653, No. 1 II.
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abstract = "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.",
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Park, S, Mori, K, Kargaltsev, O, Slane, PO, Hughes, J, Burrows, DN, Garmire, GP & Pavlov, GG 2006, 'Discovery of a candidate central compact object in the galactic nonthermal SNR G330.2+1.0', Astrophysical Journal, vol. 653, no. 1 II. https://doi.org/10.1086/510366

Discovery of a candidate central compact object in the galactic nonthermal SNR G330.2+1.0. / Park, Sangwook; Mori, Koji; Kargaltsev, Oleg; Slane, Patrick O.; Hughes, John; Burrows, David N.; Garmire, Gordon P.; Pavlov, George G.

In: Astrophysical Journal, Vol. 653, No. 1 II, 10.12.2006.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Discovery of a candidate central compact object in the galactic nonthermal SNR G330.2+1.0

AU - Park, Sangwook

AU - Mori, Koji

AU - Kargaltsev, Oleg

AU - Slane, Patrick O.

AU - Hughes, John

AU - Burrows, David N.

AU - Garmire, Gordon P.

AU - Pavlov, George G.

PY - 2006/12/10

Y1 - 2006/12/10

N2 - 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.

AB - 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.

KW - Stars: neutron

KW - Supernova remnants

KW - X-rays: stars

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