Bounds for the Radio Number of Mesh Derived Architecture

Zagreb radio index or coindex of a graph is defined based on the optimal radio labelling of the graph, where optimal refers to the labeling with a span equal to the radio number of the graph. We have defined the first and second Zagreb radio coindex, third Zagreb radio index, and coindex and calculated its value for some famous graphs. Furthermore, we established a certain relationship between Zagreb radio indices and the coindices of graphs.

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RADIO NUMBER OF TRANSFORMATION GRAPHS OF A PATH

Journal of applied mathematics & informatics ◽

10.14317/jami.2017.059 ◽

2017 ◽

Vol 35 (1_2) ◽

pp. 59-74

Author(s):

S. YOGALAKSHMI ◽

B. SOORYANARAYANA ◽

RAMYA RAMYA

Keyword(s):

Radio Number

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The AGN content of deep radio surveys and radio emission in radio-quiet AGN. Why every astronomer should care about deep radio fields

Proceedings of the International Astronomical Union ◽

10.1017/s1743921314003391 ◽

2013 ◽

Vol 9 (S304) ◽

pp. 79-85

Author(s):

P. Padovani ◽

M. Bonzini ◽

N. Miller ◽

K. I. Kellermann ◽

V. Mainieri ◽

...

Keyword(s):

Star Formation ◽

Radio Emission ◽

Radio Galaxies ◽

X Ray ◽

Star Forming ◽

Luminosity Functions ◽

Radio Number ◽

Source Populations ◽

Number Counts ◽

Quasars And Radio Galaxies

AbstractWe present our very recent results on the sub-mJy radio source populations at 1.4 GHz based on the Extended Chandra Deep Field South VLA survey, which reaches ~ 30 μJy, with details on their number counts, evolution, and luminosity functions. The sub-mJy radio sky turns out to be a complex mix of star-forming galaxies and radio-quiet AGN evolving at a similar, strong rate and declining radio-loud AGN. While the well-known flattening of the radio number counts below 1 mJy is mostly due to star-forming galaxies, these sources and AGN make up an approximately equal fraction of the sub-mJy sky. Our results shed also light on a fifty-year-old issue, namely radio emission from radio-quiet AGN, and suggest that it is closely related to star formation, at least at z ~ 1.5 − 2. The implications of our findings for future, deeper radio surveys, including those with the Square Kilometre Array, are also discussed. One of the main messages, especially to non-radio astronomers, is that radio surveys are reaching such faint limits that, while previously they were mainly useful for radio quasars and radio galaxies, they are now detecting mostly star-forming galaxies and radio-quiet AGN, i.e., the bulk of the extragalactic sources studied in the infrared, optical, and X-ray bands.

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On the radio number for corona of paths and cycles

AKCE International Journal of Graphs and Combinatorics ◽

10.1016/j.akcej.2019.06.006 ◽

2020 ◽

Vol 17 (1) ◽

pp. 269-275

Author(s):

Niranjan P.K. ◽

Srinivasa Rao Kola

Keyword(s):

Radio Number

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