<｜begin▁of▁sentence｜>### Instruction:
As an assistant to a professor of computer science specializing in network analysis, you've been tasked with exploring community structures within a collaboration network of astrophysics researchers. The collaboration data is stored in a file named "astro-ph.gml". To accomplish this, you're asked to utilize the Divide and Conquer Strategy (DCS) community detection algorithm available in the cdlib library. Once the communities are identified, you're further requested to generate a JSON representation of these communities for further analysis.
### Response:
from cdlib import algorithms
import networkx as nx
G = nx.read_gml('astro-ph.gml')
coms = algorithms.dcs(G)
coms_json = coms.to_json()
<|EOT|>
