Abstract
The hot interstellar medium (ISM) has far-reaching effect upon thestructure of galaxies. Although ISM heating processes are fairly wellunderstood, after decades of study, the processes that cool the hotinterstellar medium remain obscure. The EURD spectrograph was designed tomeasure the diffuse cosmic background from 350 to 1100 Å in order tostudy the hot ISM and the mechanisms by which it sheds its energy. Wepresent the first analysis of EURD observations of the cosmic background.These EURD observations have proven to be far more sensitive than previouswork; compared to previous results, we have improved the limits to theintensity of 450 to 900 Å line emission from the ISM by one to twoorders of magnitude. Our limit to OVI 1032 Å / 1038 Å doublet of 7900ph s-1 cm-2 str-1 is the lowest yet reported. The EURDlimits to line emission are less intense than predicted by a varietytheoretical models of the local ISM.
Similar content being viewed by others
References
Bloch, J.J., Jahoda, K., Juda, M., McCammon, D., Sanders, W.T. and Snowden, S.L.: 1986, Astrophys. J. 308, L59.
Bowyer, S., Edelstein, J. and Lampton, M.: 1997, Astrophys. J. 485, 52.
Bowyer, S., Lampton, M., Peltoniemi, J. and Roos, M.: 1995, Phys. Rev. D B25, 3214.
Breitschwerdt, D. and Schmutzler, T.: 1994, Nature 371, 774.
Breitschwerdt, D. and Schmutzler, T.: 1999, Astron. Astrophys. 347, 650.
Breitschwerdt, D.: 2001, this volume.
Chakrabarti, S., Paresce, F., Bowyer, S. and Kimble, R.: 1983, J. Gen. Relativ. 88, 4898.
Cox, D.P. and Reynolds, R.J.: 1987, Annu. Rev. Astron. Astrophys. 25, 303.
Dixon, W.V.D., Davidsen, A.F. and Ferguson, H.C.: 1996, Astrophys. J. 465, 288.
Dere, K.P., Landi, E., Mason, H.E., Monsignori Fossi, B.C. and Young, P.R.: 1997, Astron. Astrophys. Suppl. 125, 149.
Edelstein, J., Lampton, M. and Bowyer, S.: 1999, Astrophys. J., submitted.
Feldman, P., Davidson, A., Blair, W., Bowers, C., Durrance, S., Kriss, G., Ferguson, H., Kimble, R. and Long, K.: 1992, Geophys. Res. Lett. 19, 453.
Flynn, B.C., Vallerga, J.V., Gladstone, G.R. and Edelstein, J.: 1998, Geophys. Res. Lett. 25, 3253.
Holberg, J.B.: 1986, Astrophys. J. 311, 969.
Jelinsky, P., Vallerga, J.V. and Edelstein, J.: 1995, Astrophys. J. 442, 653.
Jenkins, E.B.: 1978a, Astrophys. J. 219, 845.
Jenkins, E.B.: 1978b, Astrophys. J. 220, 107.
Korpela, E.J., Bowyer, S. and Edelstein, J.: 1998, 495, 317.
Labov, S.E. and Bowyer, S.: 1991, Astrophys. J. 371, 810.
López-Moreno, J.J., Morales, C., Gómez, J.F., Trapero, J., Bowyer, S., Edelstein, J., Lampton, M. and Korpela, E.: 1998, Geophys. Res. Lett. 25, 2937.
Martin, C. and Bowyer, S.: 1989, Astrophys. J. 338, 677.
Morales, C.: 1999, Astrophys. J., submitted.
Murthy, J., Hall, D., Earl, M. and Henry, R.C.: 1999, Astrophys. J., in press.
Sciama, D.W.: 1994, Modern Cosmology and the Dark Matter Problem, Cambridge University Press, New York.
Slavin, J.D.: 1989, Astrophys. J. 346, 718.
Slavin, J.D. and Cox, D.P.: 1993, Astrophys. J. 417, 187.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Edelstein, J., Bowyer, S., Korpela, E.J. et al. EURD observations of interstellar radiation. Astrophysics and Space Science 276, 177–185 (2001). https://doi.org/10.1023/A:1011621626714
Issue Date:
DOI: https://doi.org/10.1023/A:1011621626714