A dataset provided by the European Space Agency

Name OT2_alopezse_3
Title Mapping the cosmic ray ionisation rate across the Northern end of the Orion A iant molecular cloud


DOI https://doi.org/10.5270/esa-ulwz78w
Author European Space Agency
Description Cosmic rays (CR) are ubiquitous in the Galaxy and have the important
role of ionizing the dens gas of the ISM. New Herschel observations
have shown the huge diagnostic power of the OH+ fundamental
transition to measure the CR ionization rate in diffuse clouds. Based
on previous serendipity observations toward OMC2-FIR4 within the
KP CHESS, we discovered a tenuous foreground cloud absorbing the
fundamental OH+ line. Similarly, Gupta et al. (2010) found an OH+
absorption component at a similar velocity towards Orion KL and
estimated a large CR ionization rate more than 10 times larger than
the average value observed in diffuse clouds . We propose here to
roughly map the CR ionization rate in the direction of the OMC2 and
OMC3 complex to understand its extent, nature, and, finally, the source
of ionization.
Publication Herschel CHESS discovery of the fossil cloud that gave birth to the Trapezium and Orion KL . López-Sepulcre A. et al. . Astronomy & Astrophysics, Volume 549, id.A114, 9 pp. . 549 . 10.1051\/0004-6361\/201219416 . 2013A&A...549A.114L ,
Instrument HIFI_HifiPoint_dbs
Temporal Coverage 2012-02-22T16:15:13Z/2012-02-22T16:32:15Z
Version SPG v14.1.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2012-08-22T16:15:13Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012, Mapping The Cosmic Ray Ionisation Rate Across The Northern End Of The Orion A Iant Molecular Cloud, SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-ulwz78w