Study of A1367 Cluster by Curve Fitting Variations

Publication Issue: 
Volume 39, Issue 1, 2018
Page No: 
10017
Date Received: 
Sunday, December 17, 2017
Authors' Name: 
Zamri Zainal Abidin
Zainol Abidin Ibrahim
Low Wei Yew
Muhammad Mustaqim Mezan
Danial Ahmad Ariffin Lee
Christine Jordan
Authors' Affiliation and Address: 
Radio Cosmology Laboratory Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
The School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL
Abstract: 
We investigate the possible gain spectrum of the A1367 cluster or more commonly known as the Leo cluster using different polynomial fitting techniques in DRAWSPEC. For one of the aspects of the research on the possible mass of dark matter in the Leo cluster, the mass of neutral hydrogen (M_HI) is to be determined using gain analysis in the DRAWSPEC programme, prior to using the virialized mass of the Leo cluster to determine the mass of dark matter in the cluster. This investigation is significant because by using different polynomial fittings, one set of data could yield different gain, thus providing different M_HI, ultimately affecting the calculation of mass of dark matter in a cluster. In this paper, we present a comparison between different gain spectrum and using different polynomial fittings and we conclude that the result yields different M_HI by using different curve fitting techniques.
Manuscript: 
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