Kuongorora kwokutanga kweiyi afterglow kwakanga kusina kubudirira, zvikurukuru nokuti zvakaoma kucherechedza nzvimbo yekuputika pamhepo yakareba pakarepo mushure mekuputika kwokutanga. Kuputika uku kwakauya muna February 1997 apo satellite BeppoSAX yakaona gamma-ray burst (GRB 970228) uye apo X-ray kamera yakanongedzerwa kunzvimbo iyo kuputika kwakanga kwabva, yakaona kupera kweX-ray.
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