000205482 001__ 205482
000205482 005__ 20181203023755.0
000205482 0247_ $$2doi$$a10.1103/PhysRevLett.113.251301
000205482 022__ $$a0031-9007
000205482 02470 $$2ISI$$a000346383900002
000205482 037__ $$aARTICLE
000205482 245__ $$aUnidentified Line in X-Ray Spectra of the Andromeda Galaxy and Perseus Galaxy Cluster
000205482 260__ $$bAmer Physical Soc$$c2014$$aCollege Pk
000205482 269__ $$a2014
000205482 300__ $$a6
000205482 336__ $$aJournal Articles
000205482 520__ $$aWe report a weak line at 3.52 +/- 0.02 keV in x-ray spectra of the Andromeda galaxy and the Perseus galaxy cluster observed by the metal-oxide-silicon (MOS) and p-n (PN) CCD cameras of the XMM-Newton telescope. This line is not known as an atomic line in the spectra of galaxies or clusters. It becomes stronger towards the centers of the objects; is stronger for Perseus than for M31; is absent in the spectrum of a deep "blank sky" data set. Although for each object it is hard to exclude that the feature is due to an instrumental effect or an atomic line, it is consistent with the behavior of a dark matter decay line. Future (non-) detections of this line in multiple objects may help to reveal its nature.
000205482 700__ $$uLeiden Univ, Inst Lorentz Theoret Phys, NL-2333 CA Leiden, Netherlands$$aBoyarsky, A.
000205482 700__ $$0243898$$g171152$$uEcole Polytech Fed Lausanne, FSB ITP LPPC, CH-1015 Lausanne, Switzerland$$aRuchayskiy, O.
000205482 700__ $$uBogolyubov Inst Theoret Phys, UA-03680 Kiev, Ukraine$$aIakubovskyi, D.
000205482 700__ $$aFranse, J.$$uLeiden Univ, Inst Lorentz Theoret Phys, NL-2333 CA Leiden, Netherlands
000205482 773__ $$j113$$tPhysical Review Letters$$k25
000205482 909C0 $$xU10869$$0252301$$pLPPC
000205482 909CO $$pSB$$particle$$ooai:infoscience.tind.io:205482
000205482 937__ $$aEPFL-ARTICLE-205482
000205482 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000205482 980__ $$aARTICLE