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19–23 Dec 2024
Swatantrata Bhavan, Banaras Hindu University, Varanasi
Asia/Kolkata timezone

Explaining the Filamentary Structure Connecting the Radio Lobes of the Galaxy ESO 137−006

Not scheduled
20m
Swatantrata Bhavan, Banaras Hindu University, Varanasi

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Department of Physics, I.Sc., Banaras Hindu University, 221005 Varanasi, India
Oral Astroparticle physics and cosmology

Speaker

Toushif Alam (Indian Institute of Technology Kanpur)

Description

Filamentary structures in radio galaxies have been known for a few decades. Over the past few years, owing to the high resolution and sensitive images of the radio sky with telescopes such as the LOFAR and the MeerKAT, the number of radio galaxies found to harbor such structures has increased manyfold. ESO 137006 (coordinates 16:15:03.8 60:54:26; J2000) is a luminous radio galaxy as seen by Meerkat (L1.4GHz2×1032\, erg\,cm2\,Hz1; Sun 2009), lying at the center of the merging Norma galaxy cluster. This galaxy has been observed through X-ray telescope XMM-Newton with its EPN and EMOS modules.

An ellipsoidal shockwave generated at the center of a galaxy and moving orthogonal to the plane of the galaxy evolves to produce bubble-like structures over timescales of Millions of years and as it gets older, the collimated synchrotron threads (CSTs) may take its visible form as the remnant of the bubble. I have simulated the shockfront using blast wave equations and have given feasible explanations for this. The total synchrotron radiation behind the shock and ratio of the magnetic to the cosmic electron energy density is also calculated. An azimuthal profile is extracted using binned sectors in annulus form crossing the thread location of ESO 137-006 galaxy. The corresponding X-ray and radio photon counts are calculated from different regions and a count rate profile is made. A detailed explanation will be presented at the oral presentation.

Field of contribution Theory

Author

Toushif Alam (Indian Institute of Technology Kanpur)

Presentation materials

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