Coronal modulation in the ultra-fast rotator LO Peg
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866911870626037760 |
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| author | Singh, Gurpreet Pandey, Jeewan Chandra Yadava, Umesh |
| author_facet | Singh, Gurpreet Pandey, Jeewan Chandra Yadava, Umesh |
| contents | We present coronal imaging of the ultra-fast rotator, LO Peg, using the X-ray observations from XMM-Newton. The X-ray light curves show one strong flare at the end of observation, as reported in an earlier study. On removal of flaring events, the quiescent state light curve shows rotational modulations, which are modelled using a maximum likelihood model. The results obtained from modelling show the corona of LO Peg is not uniform. Active regions are concentrated around two longitudes, where one active region appears to be compact. The large coronal area that covers almost 60 degrees along longitude from the poles to the equator does not consist of active regions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_04857 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coronal modulation in the ultra-fast rotator LO Peg Singh, Gurpreet Pandey, Jeewan Chandra Yadava, Umesh Solar and Stellar Astrophysics We present coronal imaging of the ultra-fast rotator, LO Peg, using the X-ray observations from XMM-Newton. The X-ray light curves show one strong flare at the end of observation, as reported in an earlier study. On removal of flaring events, the quiescent state light curve shows rotational modulations, which are modelled using a maximum likelihood model. The results obtained from modelling show the corona of LO Peg is not uniform. Active regions are concentrated around two longitudes, where one active region appears to be compact. The large coronal area that covers almost 60 degrees along longitude from the poles to the equator does not consist of active regions. |
| title | Coronal modulation in the ultra-fast rotator LO Peg |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2405.04857 |