Radio Emission From Low-mass Active Galactic Nuclei

الموضوعات

علوم بحتة وطبيعية

الملخص

Massive black holes of a few million to billion solar masses lurk at the centers of the most present-day massive galaxies but their origin is still unknown. The low mass galaxies (M* ~ 3x10 9 Mʘ ) hosting black holes with masses ranging from 10 3 to 10 5 Mʘ are ideal laboratories to test the models of black hole formation and they may help in understanding the co-evolution of central black holes with their host galaxies. In this thesis, we have developed a detailed theoretical model/framework to estimate the radio emission from low-mass active galactic nuclei (AGN). We also compute the contribution of radio emission from HII regions and supernova remnants in the host galaxy. Our estimated radio fluxes for AGN of 10 5 -10 7 Mʘ range from 0.6-2000 nJy at redshift 10 assuming the Eddington limited accretion. The most recent observations by the James Webb Space Telescope (JWST) have unveiled the presence of low-mass AGN at high redshift. We predict that these newly observed sources can be detected in radio with upcoming radio telescopes such as the next-generation Very Large Array (ngVLA) and the Square Kilometer Array (SKA) for integration times of 1-100 hours. These observations will unambiguously confirm the existence of AGN.

روابط وملفات

التعريف والنوع

رقم الوثيقة

fa4901ec-8b92-4633-9637-887d51d5d0ae

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2325465_2.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Ammara Aftab","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Mohammad Abdul Latif","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Radio Emission From Low-mass Active Galactic Nuclei

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

Mohammad Abdul Latif

الإعداد

Ammara Aftab

الاقتباسات الببليوغرافية