X-ray and Radio Studies of the candidate Millisecond Pulsar Binary 4FGL J0935.3+0901
| Autor: | Dong Zheng, Zhong-Xiang Wang, Yi Xing, Jithesh Vadakkumthani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Astrophysics::High Energy Astrophysical Phenomena X-ray FOS: Physical sciences Binary number Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Space and Planetary Science Millisecond pulsar Astrophysics - High Energy Astrophysical Phenomena |
| Popis: | 4FGL J0935.5+0901, a $\gamma$-ray source recently identified as a candidate redback-type millisecond pulsar binary (MSP), shows an interesting feature of having double-peaked emission lines in its optical spectrum. The feature would further suggest the source as a transitional MSP system in the sub-luminous disk state. We have observed the source with \xmm\ and Five-hundred-meter Aperture Spherical radio Telescope (FAST) at X-ray and radio frequencies respectivelyfor further studies. From the X-ray observation, a bimodal count-rate distribution, which is a distinctive feature of the transitional MSP systems, is not detected, while the properties of X-ray variability and power-law spectrum are determined for the source. These results help establish the consistency of it being a redback in the radio pulsar state. However no radio pulsation signals are found in the FAST observation, resulting an upper limit on the flux density of $\sim 4\,\mu$Jy. Implications of these results are discussed. Comment: 10 pages, 5 figures |
| Databáze: | OpenAIRE |
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