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

doi:10.1086/510366

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

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

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 L_x ∼ 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 language	English (US)
Pages (from-to)	L37-L40
Journal	Astrophysical Journal
Volume	653
Issue number	1 II
DOIs	https://doi.org/10.1086/510366
State	Published - Dec 10 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/510366

Cite this

@article{35a0614a7ff94453bd4966b2eccf4d37,

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

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.",

author = "Sangwook Park and Koji Mori and Oleg Kargaltsev and Slane, {Patrick O.} and Hughes, {John P.} and Burrows, {David N.} and Garmire, {Gordon P.} and Pavlov, {George G.}",

note = "Funding Information: This work was supported in part by the Smithsonian Astrophysical Observatory under Chandra grant SV4-74018. O. K. and G. G. P. were supported by NASA grant NAG5-10865. K. M. was partially supported by the Grant-in-Aid for Young Scientists (B) of the MEXT (18740108).",

year = "2006",

month = dec,

day = "10",

doi = "10.1086/510366",

language = "English (US)",

volume = "653",

pages = "L37--L40",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 II",

}

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 P.

AU - Burrows, David N.

AU - Garmire, Gordon P.

AU - Pavlov, George G.

N1 - Funding Information: This work was supported in part by the Smithsonian Astrophysical Observatory under Chandra grant SV4-74018. O. K. and G. G. P. were supported by NASA grant NAG5-10865. K. M. was partially supported by the Grant-in-Aid for Young Scientists (B) of the MEXT (18740108).

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.

UR - http://www.scopus.com/inward/record.url?scp=33846027880&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846027880&partnerID=8YFLogxK

U2 - 10.1086/510366

DO - 10.1086/510366

M3 - Article

AN - SCOPUS:33846027880

SN - 0004-637X

VL - 653

SP - L37-L40

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 II

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this