Electronic Resource
Noise analysis of the Indian Pulsar Timing Array data release I
| العنوان: | Noise analysis of the Indian Pulsar Timing Array data release I |
|---|---|
| المؤلفون: | Srivastava, A, Desai, S, Kolhe, N, Surnis, M, Joshi, B, Susobhanan, A, Chalumeau, A, Hisano, S, K., N, Arumugam, S, Kharbanda, D, Singha, J, Tarafdar, P, Arumugam, P, Bagchi, M, Bathula, A, Dandapat, S, Dey, L, Dwivedi, C, Girgaonkar, R, Gopakumar, A, Gupta, Y, Kikunaga, T, Krishnakumar, M, Liu, K, Maan, Y, Manoharan, P, Paladi, A, Rana, P, Shaifullah, G, Takahashi, K, Srivastava, Aman, Desai, Shantanu, Kolhe, Neel, Surnis, Mayuresh, Joshi, Bhal Chandra, Susobhanan, Abhimanyu, Chalumeau, Aurélien, Hisano, Shinnosuke, K. , Nobleson, Arumugam, Swetha, Kharbanda, Divyansh, Singha, Jaikhomba, Tarafdar, Pratik, Arumugam, P., Bagchi, Manjari, Bathula, Adarsh, Dandapat, Subhajit, Dey, Lankeswar, Dwivedi, Churchil, Girgaonkar, Raghav, Gopakumar, A., Gupta, Yashwant, Kikunaga, Tomonosuke, Krishnakumar, M. A., Liu, Kuo, Maan, Yogesh, Manoharan, P. K., Paladi, Avinash Kumar, Rana, Prerna, Shaifullah, Golam M., Takahashi, Keitaro |
| بيانات النشر: | American Physical Society country:US 2023 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The Indian Pulsar Timing Array (InPTA) collaboration has recently made its first official data release (DR1) for a sample of 14 pulsars using 3.5 years of uGMRT observations. We present the results of single-pulsar noise analysis for each of these 14 pulsars using the InPTA DR1. For this purpose, we consider white noise, achromatic red noise, dispersion measure (DM) variations, and scattering variations in our analysis. We apply Bayesian model selection to obtain the preferred noise models among these for each pulsar. For PSR J1600-3053, we find no evidence of DM and scattering variations, while for PSR J1909-3744, we find no significant scattering variations. Properties vary dramatically among pulsars. For example, we find a strong chromatic noise with chromatic index ∼2.9 for PSR J1939+2134, indicating the possibility of a scattering index that does not agree with that expected for a Kolmogorov scattering medium consistent with similar results for millisecond pulsars in past studies. Despite the relatively short time baseline, the noise models broadly agree with the other PTAs and provide, at the same time, well-constrained DM and scattering variations. |
| مصطلحات الفهرس: | Astrophysic, High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics, info:eu-repo/semantics/article |
| URL: | info:eu-repo/semantics/altIdentifier/wos/WOS:001057754800006 volume:108 issue:2 journal:PHYSICAL REVIEW D |
| الاتاحة: | Open access content. Open access content |
| ملاحظة: | STAMPA English |
| Other Numbers: | ITBAO oai:boa.unimib.it:10281/460341 10.1103/physrevd.108.023008 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85164938432 1427430791 |
| المصدر المساهم: | BICOCCA OPEN ARCH From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1427430791 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |