Discovery of Interacting Molecular Gas toward the TeV Gamma-Ray Peak of the SNR G 347.3-0.5 Discovery of Interacting Molecular Gas toward the TeV Gamma-Ray Peak of the SNR G 347.3-0.5

Access this Article

Search this Article

Author(s)

Abstract

Supernova remnants ( = SNR) are suggested to be sites of cosmic-ray acceleration. In particular, it has been an issue of keen interest whether cosmic ray protons are being accelerated in a SNR which emits TeV γ-rays. A crucial observational test for this is to find dense molecular gas towards the SNR, because such molecular gas can best verify the existence of cosmic-ray protons via pion decay to γ-rays. Here, we show that new high-resolution mm-wave observations of interstellar CO molecule have revealed molecular gas at 1kpc distance interacting with the TeV γ-ray SNR G 347.3 - 0.5, and that a molecular cloud of ˜ 200 solar masses is clearly associated with the TeV γ-ray peak, providing strong evidence for proton acceleration. We have estimated the total energy of accelerated protons to be ˜ 1048 erg, which corresponds to an acceleration efficiency of ˜ 0.001, posing an observational constraint on the proton acceleration.

Journal

  • Publications of the Astronomical Society of Japan

    Publications of the Astronomical Society of Japan 55(5), L61-L64, 2003-10-25

    The Astronomical Society of Japan

References:  17

  • <no title>

    ARIKAWA Y.

    PASJ 51, L7, 1999

    Cited by (1)

  • <no title>

    BERTSCH D. L.

    ApJ 416, 587, 1993

    Cited by (1)

  • <no title>

    BRAND J.

    A&A 275, 67, 1993

    Cited by (1)

  • <no title>

    CLEARY M. N.

    A&AS 36, 95, 1979

    Cited by (1)

  • <no title>

    DAME T. M.

    ApJ 547, 792, 2001

    Cited by (1)

  • <no title>

    HARTMAN R. C.

    ApJS 123, 79, 1999

    Cited by (1)

  • <no title>

    KOYAMA K.

    PASJ 49, L7, 1997

    Cited by (1)

  • <no title>

    KOYAMA K.

    Nature 378, 255, 1995

    Cited by (1)

  • <no title>

    MATSUNAGA K.

    PASJ 53, 1003, 2001

    Cited by (1)

  • <no title>

    MORIGUCHI Y.

    PASJ 53, 1025, 2001

    Cited by (1)

  • <no title>

    PFEFFERMANN E.

    Rontgen from the Universe 267, 1996

    Cited by (1)

  • <no title>

    SLANE P.

    ApJ 525, 357, 1999

    Cited by (1)

  • <no title>

    TANIMORI Y.

    Proc. 27th int. Cosmic Ray Conf., 2001 6, 2465, 2001

    Cited by (1)

  • <no title>

    UCHIYAMA Y.

    A&A 400, 567, 2003

    Cited by (1)

  • <no title>

    WANG Z.-R.

    A&A 318, L59, 1997

    Cited by (1)

  • <no title>

    WHITE G. J.

    A&A 173, 337, 1987

    Cited by (1)

  • <no title>

    ENOMOTO R.

    Nature 416, 823, 2002

    Cited by (9)

Cited by:  3

Codes

  • NII Article ID (NAID)
    10023928456
  • NII NACSIS-CAT ID (NCID)
    AA1082896X
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    00046264
  • NDL Article ID
    6721565
  • NDL Source Classification
    ZM33(科学技術--宇宙科学)
  • NDL Call No.
    Z53-A296
  • Data Source
    CJP  CJPref  NDL  IR 
Page Top