Publication details

Hitomi observations of the LMC SNR N 132 D: Highly redshifted X-ray emission from iron ejecta

Authors

AHARONIAN F. AKAMATSU H. AKIMOTO F. ALLEN SW ANGELINI L. AUDARD M. AWAKI H. AXELSSON M. BAMBA A. BAUTZ MW BLANDFORD R. BRENNEMAN LW BROWN GV BULBUL E. CACKETT EM CHERNYAKOVA M. CHIAO MP COPPI PS COSTANTINI E. DE PLAA J. DE VRIES CP DEN HERDER JW DONE C. DOTANI T. EBISAWA K. ECKART ME ENOTO T. EZOE Y. FABIAN AC FERRIGNO C. FOSTER AR FUJIMOTO R. FUKAZAWA Y. FURUZAWA A. GALEAZZI M. GALLO LC GANDHI P. GIUSTINI M. GOLDWURM A. LY Gu GUAINAZZI M. HABA Y. HAGINO K. HAMAGUCHI K. HARRUS IM HATSUKADE I. HAYASHI K. HAYASHI T. HAYASHIDA K. HIRAGA JS HORNSCHEMEIER A. HOSHINO A. HUGHES JP ICHINOHE Y. IIZUKA R. INOUE H. INOUE Y. ISHIDA M. ISHIKAWA K. ISHISAKI Y. IWAI M. KAASTRA J. KALLMAN T. KAMAE T. KATAOKA J. KATSUDA S. KAWAI N. KELLEY RL KILBOURNE CA KITAGUCHI T. KITAMOTO S. KITAYAMA T. KOHMURA T. KOKUBUN M. KOYAMA K. KOYAMA S. KRETSCHMAR P. KRIMM HA KUBOTA A. KUNIEDA H. LAURENT P. LEE SH LEUTENEGGER MA LIMOUSIN O. LOEWENSTEIN M. LONG KS LUMB D. MADEJSKI G. MAEDA Y. MAIER D. MAKISHIMA K. MARKEVITCH M. MATSUMOTO H. MATSUSHITA K. MCCAMMON D. MCNAMARA BR MEHDIPOUR M. MILLER ED MILLER JM MINESHIGE S. MITSUDA K. MITSUISHI I. MIYAZAWA T. MIZUNO T. MORI H. MORI K. MUKAI K. MURAKAMI H. MUSHOTZKY RF NAKAGAWA T. NAKAJIMA H. NAKAMORI T. NAKASHIMA S. NAKAZAWA K. NORUKAWA KK NOBUKAWA M. NODA H. ODAKA H. OHASHI T. OHNO M. OKAJIMA T. OTA N. OZAKI M. PAERELS F. PALTANI S. PETRE R. PINTO C. PORTER FS POTTSCHMIDT K. REYNOLDS CS SAFI-HARB S. SAITO S. SAKAI K. SASAKI T. SATO G. SATO K. SATO R. SATO T. SAWADA M. SCHARTEL N. SERLEMITSOS PJ SETA H. SHIDATSU M. SIMIONESCU A. SMITH RK SOONG Y. STAWARZ L. SUGAWARA Y. SUGITA S. SZYMKOWIAK A. TAJIMA H. TAKAHASHI H. TAKAHASHI T. TAKEDA S. TAKEI Y. TAMAGAWA T. TAMURA T. TANAKA T. TANAKA Y. TANAKA YT TASHIRO MS TAWARA Y. TERADA Y. TERASHIMA Y. TOMBESI F. TOMIDA H. TSUBOI Y. TSUJIMOTO M. TSUNEMI H. TSURU TG UCHIDA H. UCHIYAMA H. UCHIYAMA Y. UEDA S. UEDA Y. UNO S. URRY CM URSINO E. WATANABE S. WERNER Norbert WILKINS DR WILLIAMS BJ YAMADA S. YAMAGUCHI H. YAMAOKA K. YAMASAKI NY YAMAUCHI M. YAMAUCHI S. YAQOOB T. YATSU Y. YONETOKU D. ZHURAVLEVA I. ZOGHBI A.

Year of publication 2018
Type Article in Periodical
Magazine / Source PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.1093/pasj/psx151
Keywords ISM: individual objects (N 132 D); ISM: supernova remnants; instrumentation: spectrographs; methods: observational; X-rays: individual (N 132 D)
Description We present Hitomi observations of N 132 D, a young, X-ray bright, O-rich core-collapse supernova remnant in the Large Magellanic Cloud (LMC). Despite a very short observation of only 3.7 ks, the Soft X-ray Spectrometer (SXS) easily detects the line complexes of highly ionized S K and Fe K with 16-17 counts in each. The Fe feature is measured for the first time at high spectral resolution. Based on the plausible assumption that the Fe K emission is dominated by He-like ions, we find that the material responsible for this Fe emission is highly redshifted at similar to 800 km s(-1) compared to the local LMC interstellar medium (ISM), with a 90% credible interval of 50-1500 km s(-1) if a weakly informative prior is placed on possible line broadening. This indicates (1) that the Fe emission arises from the supernova ejecta, and (2) that these ejecta are highly asymmetric, since no blueshifted component is found. The S K velocity is consistent with the local LMC ISM, and is likely from swept-up ISM material. These results are consistent with spatial mapping that shows the He-like Fe concentrated in the interior of the remnant and the S tracing the outer shell. The results also show that even with a very small number of counts, direct velocity measurements from Doppler-shifted lines detected in extended objects like supernova remnants are now possible. Thanks to the very low SXS background of similar to 1 event per spectral resolution element per 100 ks, such results are obtainable during short pointed or slew observations with similar instruments. This highlights the power of high-spectral-resolution imaging observations, and demonstrates the new window that has been opened with Hitomi and will be greatly widened with future missions such as the X-ray Astronomy Recovery Mission (XARM) and Athena.

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