Suzaku observations of ejecta-dominated Galactic supernova remnant G346.6-0.2

Download

index.pdf

Date

2011-07-01

Author

Sezer, A.
GÖK, FATMA
Hudaverdi, M.
Kimura, M.
ERCAN, ENİSE NİHAL

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

117
views

0
downloads

We present here the results of an X-ray analysis of Galactic supernova remnant G346.6-0.2 observed with Suzaku. K-shell emission lines of Mg, Si, S, Ca and Fe are detected clearly for the first time. Strong emission lines of Si and S imply that the X-ray emission nature of G346.6-0.2 is ejecta-dominated. The ejecta-dominated emission is well fitted by a combined model consisting of a thermal plasma in non-equilibrium ionization and a non-thermal component, which can be regarded as synchrotron emission with a photon index of Gamma similar to 0.6. An absorbing column density of N-H similar to 2.1 x 10(22) cm(-2) is obtained from the best fit, implying a high-density medium, high electron temperature of kT(e) similar to 1.2 keV and ionization time-scale of n(e)t similar to 2.9 x 10(11) cm(-3) s, indicating that this remnant may be far from full ionization equilibrium. The relative abundances from the ejecta show that the remnant originates from a Type Ia supernova explosion.

Subject Keywords

Space and Planetary Science, Astronomy and Astrophysics

URI

https://hdl.handle.net/11511/67918

Journal

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

DOI

https://doi.org/10.1111/j.1365-2966.2011.18710.x

Collections

Unclassified, Article

Suggestions

OpenMETU
Core

XMM-NEWTON OBSERVATIONS OF THE DWARF NOVA RU Peg IN QUIESCENCE: PROBE OF THE BOUNDARY LAYER Balman, Şölen; Godon, Patrick; Sion, Edward M.; Ness, Jan-Uwe; Schlegel, Eric; Barrett, Paul E.; Szkody, Paula (IOP Publishing, 2011-11-10) We present an analysis of X-ray and UV data obtained with the XMM-Newton Observatory of the long-period dwarf nova RU Peg. RU Peg contains a massive white dwarf (WD), possibly the hottest WD in a dwarf nova (DN), it has a low inclination, thus optimally exposing its X-ray emitting boundary layer (BL), and has an excellent trigonometric parallax distance. We modeled the X-ray data using XSPEC assuming a multi-temperature plasma emission model built from the MEKAL code (i.e., CEVMKL). We obtained a maximum te...
OBSERVATION OF EXTENDED VERY HIGH ENERGY EMISSION FROM THE SUPERNOVA REMNANT IC 443 WITH VERITAS Acciari, V. A.; et. al. (IOP Publishing, 2009-06-20) We present evidence that the very high energy (VHE, E > 100 GeV) gamma-ray emission coincident with the supernova remnant IC 443 is extended. IC 443 contains one of the best studied sites of supernova remnant/molecular cloud interaction and the pulsar wind nebula CXOU J061705.3+222127, both of which are important targets for VHE observations. VERITAS observed IC 443 for 37.9 hr during 2007 and detected emission above 300 GeV with an excess of 247 events, resulting in a significance of 8.3 standard deviation...
DETECTION OF EXTENDED VHE GAMMA RAY EMISSION FROM G106.3+2.7 WITH VERITAS Acciari, V. A.; et. al. (IOP Publishing, 2009-09-20) We report the detection of very-high-energy (VHE) gamma-ray emission from supernova remnant (SNR) G106.3+2.7. Observations performed in 2008 with the VERITAS atmospheric Cherenkov gamma-ray telescope resolve extended emission overlapping the elongated radio SNR. The 7.3 sigma (pre-trials) detection has a full angular extent of roughly 0 degrees.6 by 0 degrees.4. Most notably, the centroid of the VHE emission is centered near the peak of the coincident (CO)-C-12 (J = 1-0) emission, 0 degrees.4 away from the ...
The first resolved and detected classical nova shell in X-rays: The shell of Nova Persei 1901 Balman, Şölen; Ogelman, HB (IOP Publishing, 1999-06-20) We present the ROSAT High-Resolution Imager data of the first resolved and detected classical nova shell in the X-ray wavelengths: the shell of Nova Persei 1901. We find that the X-ray nebula is composed of knots/clumps and has an elliptical shape with a total count rate of about 0.01 +/- 0.001 counts s(-1). We estimate that the spectrum is of thermal origin with a luminosity of similar to 8.0 x 10(31) ergs s(-1) and an X-ray temperature of similar to 2.0 x 10(6) K in the 0.1-2.4 keV energy range. The knots...
LOCALIZING INTEGRAL SOURCES WITH CHANDRA: X-RAY AND MULTI-WAVELENGTH IDENTIFICATIONS AND ENERGY SPECTRA Tomsick, John A.; Bodaghee, Arash; Chaty, Sylvain; Rodriguez, Jerome; Rahoui, Farid; Halpern, Jules; KALEMCİ, EMRAH; Arabaci, Mehtap Ozbey (American Astronomical Society, 2012-08-01) We report on Chandra observations of 18 hard X-ray (>20 keV) sources discovered with the INTEGRAL satellite near the Galactic plane. For 14 of the INTEGRAL sources, we have uncovered one or two potential Chandra counterparts per source. These provide soft X-ray (0.3-10 keV) spectra and subarcsecond localizations, which we use to identify counterparts at other wavelengths, providing information about the nature of each source. Despite the fact that all of the sources are within 5 degrees of the plane, four o...

Citation Formats

A. Sezer, F. GÖK, M. Hudaverdi, M. Kimura, and E. N. ERCAN, “Suzaku observations of ejecta-dominated Galactic supernova remnant G346.6-0.2,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, pp. 301–305, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67918.