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The X-ray Resolved Supernova Remnant S8 in the Nearby Dwarf Irregular Galaxy IC 1613тезисы доклада
- Авторы: Schlegel Eric, Pannuti Thomas, Lacey Christina, Lozinskaya Tatiana, Moiseev Alexei
- Сборник: American Astronomical Society Meeting #233
- Серия: American Astronomical Society Meeting Abstracts
- Тезисы
- Год издания: 2019
- Место издания: American Astronomical Society
- Первая страница: id.150.11
- Аннотация: We describe a Chandra observation of the supernova remnant (SNR) S8 in the nearby irregular galaxy IC 1613 (distance 725 kpc). Chandra resolves the only known SNR in IC 1613, revealing a nearly circular morphology. We compare the X-ray morphology with Halpha and radio images. The SNR is approximately 5.5 arc seconds in diameter which corresponds to 19.3 pc at the distance of the host galaxy. A hardness map suggests a soft, brighter center within a harder, circular shell, but the statistics are limited. Using standard expressions that link the shock radius, shock temperature, explosion energy, and time from the supernova, we infer an explosion energy of 2-7 foe and an age of 3800-6500 years. An upper limit to the presence of an X-ray pulsar in the 0.3-5 keV band is ~3.6x10^35 erg/sec; this compares to a Cas A-like central object of a few 10^33 erg/sec in the same band. However, a Crab-like pulsar would be detected as its luminosity in the defined energy band is 10-100 times above our X-ray upper limit. We compare S8 with other SNRs in Local Group galaxies.
- Добавил в систему: Егоров Олег Владимирович