التفاصيل البيبلوغرافية
| العنوان: |
Evidence of the γ-ray counterpart of nova FM Cir from Fermi–LAT. |
| المؤلفون: |
Wang, H H, Yan, H D, Lin, L C -C, Takata, J, Tam, P-H T |
| المصدر: |
Monthly Notices of the Royal Astronomical Society: Letters; Jun2024, Vol. 531 Issue 1, pL63-L68, 6p |
| مصطلحات موضوعية: |
NOVAE (Astronomy), BLACKBODY radiation, LIGHT curves, WHITE dwarf stars, DWARF stars |
| مستخلص: |
We report the results of an analysis of X-ray and γ-ray data from the nova FM Cir taken by Swift and Fermi –LAT. The γ-ray emission from FM Cir can be identified with a significance level of ∼3σ within ∼40 d after the nova eruption (2018 January 19) when we bin the light curve per day. The significance can exceed the 4σ confidence level if we accumulate a longer time (i.e. 20 d) to bin the light curve. The γ-ray counterpart could be identified with a Test Statistic (TS) above 4 until ∼180 d after the eruption. The duration of the γ-ray detection is longer than those reported in previous studies of other novae detected in the GeV range. Significant X-ray emission was observed after the γ-ray flux level fell below the sensitivity limit of Fermi –LAT. The hardness ratio of the X-ray emission decreased rapidly with time, and the spectra were dominated by blackbody radiation from the hot white dwarf. Except for the longer duration of the γ-ray emission, the multiwavelength properties of FM Cir closely resemble those of other novae detected in the GeV range. [ABSTRACT FROM AUTHOR] |
|
Copyright of Monthly Notices of the Royal Astronomical Society: Letters is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder