Which sci-fi novel am I thinking of?

[LeoSayer]

I remember reading a book a few years which I'd like to read again but I've forgotten the name...

It was set hundreds of years in the future when man was able to travel to many different parts of the galaxy but there was no sign of alien life anywhere. In desperation, we artificially set off 3 supernovae in order to attract the attention of beings in other parts of galaxy and beyond.

Does anyone know the name?

[LeoSayer]

That's the one!

Cheers Judas

[LeoSayer]

Will do, just loaded onto my Kindle.