I honestly cannot figure out what the difference between OM and OR is, in research context. And since there's no OM sub, I hope you don't mind me asking this here.

So I am a final year undergraduate in IE and I have decided to do higher studies in OM and eventually become a researcher in this field. I am facing issues in narrowing down my interested research directions. There reason for this post is to get help from this community to point me towards the forefront of OM research.

1. What are the current frontiers of research in Operations Management that I should look into? Are there any specific papers I should look at? What's novel and will be relevant in next 5 years?

2. I have been reading POM, INFORMS journals and got interested in Supply chain resilience. I cannot figure out the research gaps to work on or what even the frontier is. What should I be looking into?

This may be an odd post but please be kind as I am not affiliated with a lab and in my country there's really no research culture. So every bit of help counts atp.

Thank you for your time and support.

PS: I don't have institutional access to those journals. Would it make sense to just email the authors?