Abstract
A new Chandra observation of SNR 0506-68.0 (also called N23) reveals a complex, highly structured morphology in the low-energy X-ray band and an isolated compact central object in the high-energy band. Spectral analysis indicates that the X-ray emission overall is dominated by thermal gas whose composition is consistent with swept-up ambient material. There is a strong gradient in ambient density across the diameter of the remnant. Toward the southeast, near a prominent star cluster, the emitting density is 10-23 cm -3, while toward the northwest it has dropped to a value of only 1 cm-3. The total extent of the X-ray remnant is 100″ × 120″ (24 × 29 pc for a distance of 50 kpc), somewhat larger than previously known. The remnant's age is estimated to be ∼4600 yr. One part of the remnant shows evidence for enhanced O, Ne, and perhaps Mg abundances, which is interpreted as evidence for ejecta from a massive star core collapse supernova. The compact central object has a luminosity of a few times 10 33 ergs s-1 and no obvious radio or optical counterpart. It does not show an extended nebula or pulsed emission as expected from a young energetic pulsar, but resembles the compact central objects seen in other core collapse SNe, such as Cas A.
| Original language | English (US) |
|---|---|
| Pages (from-to) | L117-L120 |
| Journal | Astrophysical Journal |
| Volume | 645 |
| Issue number | 2 II |
| DOIs | |
| State | Published - Jul 10 2006 |
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All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
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The Chandra view of the supernova remnant 0506-68.0 in the large magellanic cloud. / Hughes, John P.; Rafelski, Marc; Warren, Jessica S.; Rakowski, Cara; Slane, Patrick; Burrows, David; Nousek, John.
In: Astrophysical Journal, Vol. 645, No. 2 II, 10.07.2006, p. L117-L120.Research output: Contribution to journal › Article
TY - JOUR
T1 - The Chandra view of the supernova remnant 0506-68.0 in the large magellanic cloud
AU - Hughes, John P.
AU - Rafelski, Marc
AU - Warren, Jessica S.
AU - Rakowski, Cara
AU - Slane, Patrick
AU - Burrows, David
AU - Nousek, John
PY - 2006/7/10
Y1 - 2006/7/10
N2 - A new Chandra observation of SNR 0506-68.0 (also called N23) reveals a complex, highly structured morphology in the low-energy X-ray band and an isolated compact central object in the high-energy band. Spectral analysis indicates that the X-ray emission overall is dominated by thermal gas whose composition is consistent with swept-up ambient material. There is a strong gradient in ambient density across the diameter of the remnant. Toward the southeast, near a prominent star cluster, the emitting density is 10-23 cm -3, while toward the northwest it has dropped to a value of only 1 cm-3. The total extent of the X-ray remnant is 100″ × 120″ (24 × 29 pc for a distance of 50 kpc), somewhat larger than previously known. The remnant's age is estimated to be ∼4600 yr. One part of the remnant shows evidence for enhanced O, Ne, and perhaps Mg abundances, which is interpreted as evidence for ejecta from a massive star core collapse supernova. The compact central object has a luminosity of a few times 10 33 ergs s-1 and no obvious radio or optical counterpart. It does not show an extended nebula or pulsed emission as expected from a young energetic pulsar, but resembles the compact central objects seen in other core collapse SNe, such as Cas A.
AB - A new Chandra observation of SNR 0506-68.0 (also called N23) reveals a complex, highly structured morphology in the low-energy X-ray band and an isolated compact central object in the high-energy band. Spectral analysis indicates that the X-ray emission overall is dominated by thermal gas whose composition is consistent with swept-up ambient material. There is a strong gradient in ambient density across the diameter of the remnant. Toward the southeast, near a prominent star cluster, the emitting density is 10-23 cm -3, while toward the northwest it has dropped to a value of only 1 cm-3. The total extent of the X-ray remnant is 100″ × 120″ (24 × 29 pc for a distance of 50 kpc), somewhat larger than previously known. The remnant's age is estimated to be ∼4600 yr. One part of the remnant shows evidence for enhanced O, Ne, and perhaps Mg abundances, which is interpreted as evidence for ejecta from a massive star core collapse supernova. The compact central object has a luminosity of a few times 10 33 ergs s-1 and no obvious radio or optical counterpart. It does not show an extended nebula or pulsed emission as expected from a young energetic pulsar, but resembles the compact central objects seen in other core collapse SNe, such as Cas A.
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U2 - 10.1086/506323
DO - 10.1086/506323
M3 - Article
AN - SCOPUS:33746868918
VL - 645
SP - L117-L120
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2 II
ER -