Dear astro/science friends - question: If someone is writing a paper as a SINGLE author, what is the 1st/3rd tense personal pronoun used?

"We present.."

"I present.."

"Our results.."

"My results.."

I've seen a variety of these examples, so am wondering what is the standard?

It's not for me and I can certainly work it out in writing an article, but am a bit confused how this works for science results being presented in their own science papers.

Ive seen all of the examples above ....