تقرير
Tracking galaxy evolution through low frequency radio continuum observations using SKA and Citizen-science Research using Multi-wavelength data
| العنوان: | Tracking galaxy evolution through low frequency radio continuum observations using SKA and Citizen-science Research using Multi-wavelength data |
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| المؤلفون: | Hota, Ananda, Konar, Chiranjib, Stalin, C. S., Vaddi, Sravani, Mohanty, Pradeepta K., Dabhade, Pratik, Bhoga, Sai Arun Dharmik, Rajoria, Megha, Sethi, Sagar |
| سنة النشر: | 2016 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Astrophysics of Galaxies |
| الوصف: | We present a review on galaxy black hole co-evolution through merger, star formation and AGN-jet feedback. We highlight results on transitional galaxies (e.g. NGC1482, NGC6764, NGC3801, Speca, RAD-18 etc.) which has data from Giant Meterwave Radio Telescope (GMRT) and other sub-mm, IR, optical, UV and X-ray telescopes. The `smoking gun' relic-evidences of past AGN-jet feedback which is believed to have quenched star formation in transitional galaxies are still missing. Relic radio lobes, as old as a few hundred Myr, can be best detected at low radio frequencies with the GMRT, LOFAR and in future SKA. However, similar relic evidences of quasar activities, known as `Hanny's Voorwerp' discovered by Galaxy Zoo in optical data, are only around a few tens of thousand years old. More discoveries are needed to match these time-scales with time since the decline of star formation in transitional galaxies. Such faint fuzzy relic emissions in optical and angular-scale sensitive radio interferometric images can be discovered most efficiently by citizen-scientists but with a formal training. We describe RAD@home, the only Indian citizen-science research project in astronomy which takes such a modified approach. We present interesting objects, discovered from the TIFR GMRT Sky Survey (TGSS) by 69 trained citizen-scientists or e-astronomers, like relic radio lobes, episodic radio galaxies, jet-galaxy interaction, bent radio galaxy in filament etc.. This model can provide an equal opportunity of academic-growth to people even in the under-developed regions where we always need to establish our optical and radio telescopes. This can expand the research-activity of city-based research-institutes beyond their four brick walls, and alleviate various socio-economic and geo-political constraints on growth of citizens located in remote areas. #RADatHomeIndia #ABCDresearch Comment: To appear in Journal of Astrophysics and Astronomy (JOAA) special issue on "Science with the SKA: an Indian perspective". Currently under review. Please help RAD@home and like our Facebook page https://www.facebook.com/RADatHomeIndia/ Compact pdf version of the paper for colour-printing can be found at https://drive.google.com/file/d/0B6Ya4Y3GPJSZZHNNTkVwdVVYSW8/view?usp=sharing |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/s12036-016-9415-8 |
| URL الوصول: | http://arxiv.org/abs/1610.09798 |
| رقم الأكسشن: | edsarx.1610.09798 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/s12036-016-9415-8 |
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