▁below ▁ 1 ▁Me V . ▁They ▁have ▁not ▁yet ▁been ▁observed ▁due ▁to ▁experimental ▁noise ▁( background ). ▁Ult ra - p ure ▁sc int ill ator ▁detect ors ▁have ▁the ▁potential ▁to ▁pro be ▁the ▁flux ▁predicted ▁by ▁the ▁SS M . ▁This ▁detection ▁could ▁be ▁possible ▁already ▁in ▁B ore x ino ; ▁the ▁next ▁scientific ▁occasions ▁will ▁be ▁in ▁S NO + ▁and , ▁on ▁the ▁longer ▁term , ▁in ▁L EN A ▁and ▁J UN O , ▁three ▁detect ors ▁that ▁will ▁be ▁larger ▁but ▁will ▁use ▁the ▁same ▁principles ▁of ▁B ore x ino . ▁ ▁Future ▁experiments ▁While ▁radio chem ical ▁experiments ▁have ▁in ▁some ▁sense ▁observed ▁the ▁pp ▁and ▁Be 7 ▁neut r inos ▁they ▁have ▁measured ▁only ▁integral ▁flux es . ▁The ▁" hol y ▁gra il " ▁of ▁solar ▁neut r ino ▁experiments ▁would ▁detect ▁the ▁Be 7 ▁neut r inos ▁with ▁a ▁det ector ▁that ▁is ▁sensitive ▁to ▁the ▁individual ▁neut r ino ▁energ ies . ▁ ▁This ▁experiment ▁would ▁test ▁the ▁MS W ▁hypothesis ▁by ▁searching ▁for ▁the ▁turn - on ▁of ▁the ▁MS W ▁effect . ▁Some ▁ex otic ▁models ▁are ▁still ▁capable ▁of ▁explaining ▁the ▁solar ▁neut r ino ▁def ic it , ▁so ▁the ▁observation ▁of ▁the ▁MS W ▁turn ▁on ▁would , ▁in ▁effect , ▁finally ▁solve ▁the ▁solar ▁neut r ino ▁problem . ▁ ▁Core ▁temperature ▁prediction ▁The ▁flux ▁of ▁bor on - 8 ▁neut r inos ▁is ▁highly ▁sensitive ▁to ▁the ▁temperature ▁of ▁the ▁core