A Supernova Explosion Inside a Molecular Cloud

https://www.nrao.edu/archives/plugins/Dropbox/files/w44_supernova_explo_hi.jpg

Description

W44 is one of the best example of an interacting supernova remnant with its parent molecular cloud. Radio continuum measurements indicate an elongated shell-like structure with a remarkable network of filaments and arcs across the face of this remnant (Giacani et al.1977). Recent near-IR, molecular hydrogen and 4.5 micron images using {Spitzer Space Observatory} show similar filamentary structure suggesting the presence of shocked molecular gas along the synchrotron-emitting radio filaments (Reach et al. 2006). X-ray observations show diffuse emission from the central region of this remnant (Rho et al. 1994). References: Reach, W. T., Rho, J. et al. 2006, AJ, 131, 1479 Rho, J., Petre, R., Schlegel, E. M., Hester, J. 1994, ApJ, 430, 757 Giacani, E. B., Dubner, G. M. et al. 1997, AJ, 113, 1379
A radio image in red color is constructed by the "author" from archival 20cm data by combining data from observations taken in the C and D-array configurations. The original radio image is published by Giacani et al. (1997). An X-ray image in blue color is based on ROSAT observations (Rho et al. 1994). An Infrared image in green color based on SPITZER observations (Reach et al. 2006) shows the distribution of molecular gas as the remnant interacts with its parent cloud.

Creator

Legacy Astronomical Images

Rights

NRAO/AUI/NSF does not hold full copyright for this image. Contact the archivist for details.

Type

Legacy Astronomical Image

Object Name

W44

Telescope

Very Large Array (VLA)

Type of Observation

continuum

Center of Image

RA 18:56:2.000, Dec: 1:21:57.000 (J2000)

Field of View

0.750000 x 0.666667 degrees

Notes

Contact the archivist for a high resolution tif of this image.

Series

Galactic Sources Series

Unit

Supernova Remnants Unit

Citation

Legacy Astronomical Images, “A Supernova Explosion Inside a Molecular Cloud,” NRAO Archives, accessed December 3, 2021, https://www.nrao.edu/archives/items/show/33525.