Evidence for intrinsic absorption in the Swift X-ray afterglows

S. Campana; P. Romano; S. Covino; D. Lazzati; A. De Luca; G. Chincarini; A. Moretti; G. Tagliaferri; G. Cusumano; V. Mangano; V. La Parola; T. Mineo; P. Giommi; M. Perri; M. Capalbi; L. A. Antonelli; D. N. Burrows; J. E. Hill; J. L. Racusin; J. A. Kennea; D. C. Morris; C. Pagani; J. A. Nousek; J. P. Osborne; M. R. Goad; K. L. Page; A. P. Beardmore; O. Godet; P. T. O'Brien; A. A. Wells; L. Angelini; N. Gehrels

doi:10.1063/1.2207928

Evidence for intrinsic absorption in the Swift X-ray afterglows

S. Campana, P. Romano, S. Covino, D. Lazzati, A. De Luca, G. Chincarini, A. Moretti, G. Tagliaferri, G. Cusumano, V. Mangano, V. La Parola, T. Mineo, P. Giommi, M. Perri, M. Capalbi, L. A. Antonelli, D. N. Burrows, J. E. Hill, J. L. Racusin, J. A. KenneaD. C. Morris, C. Pagani, J. A. Nousek, J. P. Osborne, M. R. Goad, K. L. Page, A. P. Beardmore, O. Godet, P. T. O'Brien, A. A. Wells, L. Angelini, N. Gehrels

Astronomy & Astrophysics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Gamma-ray burst (GRB) progenitors are observationally linked to the death of massive stars. X-ray studies of the GRB afterglows can deepen our knowledge of the ionization status and metal abundances of the matter in the GRB environment. Moreover, the presence of local matter can be inferred through its fingerprints in the X-ray spectrum, i.e. the presence of absorption higher than the Galactic value. A few studies based on BeppoSAX and XMM-Newton found evidence of higher than Galactic values for the column density in a number of GRB afterglows. Here we report on a systematic analysis of 17 GRBs observed by Swift up to April 15, 2005. We observed a large number of GRBs with an excess of column density. Our sample, together with previous determinations of the intrinsic column densities for GRBs with known redshift, provides evidence for a distribution of absorption consistent with that predicted for randomly occurring GRB within molecular clouds.

Original language	English (US)
Title of host publication	GAMMA-RAY BURSTS IN THE SWIFT ERA
Subtitle of host publication	Sixteenth Maryland Astrophysics Conference
Pages	408-413
Number of pages	6
DOIs	https://doi.org/10.1063/1.2207928
State	Published - May 19 2006
Event	GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference - Washington, D.C., United States Duration: Nov 29 2005 → Dec 2 2005

Publication series

Name	AIP Conference Proceedings
Volume	836
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference
Country/Territory	United States
City	Washington, D.C.
Period	11/29/05 → 12/2/05

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1063/1.2207928

Cite this

Campana, S., Romano, P., Covino, S., Lazzati, D., De Luca, A., Chincarini, G., Moretti, A., Tagliaferri, G., Cusumano, G., Mangano, V., La Parola, V., Mineo, T., Giommi, P., Perri, M., Capalbi, M., Antonelli, L. A., Burrows, D. N., Hill, J. E., Racusin, J. L., ... Gehrels, N. (2006). Evidence for intrinsic absorption in the Swift X-ray afterglows. In GAMMA-RAY BURSTS IN THE SWIFT ERA: Sixteenth Maryland Astrophysics Conference (pp. 408-413). (AIP Conference Proceedings; Vol. 836). https://doi.org/10.1063/1.2207928

@inproceedings{6c4600753a724053a8a2dd36e0d74b31,

title = "Evidence for intrinsic absorption in the Swift X-ray afterglows",

abstract = "Gamma-ray burst (GRB) progenitors are observationally linked to the death of massive stars. X-ray studies of the GRB afterglows can deepen our knowledge of the ionization status and metal abundances of the matter in the GRB environment. Moreover, the presence of local matter can be inferred through its fingerprints in the X-ray spectrum, i.e. the presence of absorption higher than the Galactic value. A few studies based on BeppoSAX and XMM-Newton found evidence of higher than Galactic values for the column density in a number of GRB afterglows. Here we report on a systematic analysis of 17 GRBs observed by Swift up to April 15, 2005. We observed a large number of GRBs with an excess of column density. Our sample, together with previous determinations of the intrinsic column densities for GRBs with known redshift, provides evidence for a distribution of absorption consistent with that predicted for randomly occurring GRB within molecular clouds.",

author = "S. Campana and P. Romano and S. Covino and D. Lazzati and {De Luca}, A. and G. Chincarini and A. Moretti and G. Tagliaferri and G. Cusumano and V. Mangano and {La Parola}, V. and T. Mineo and P. Giommi and M. Perri and M. Capalbi and Antonelli, {L. A.} and Burrows, {D. N.} and Hill, {J. E.} and Racusin, {J. L.} and Kennea, {J. A.} and Morris, {D. C.} and C. Pagani and Nousek, {J. A.} and Osborne, {J. P.} and Goad, {M. R.} and Page, {K. L.} and Beardmore, {A. P.} and O. Godet and O'Brien, {P. T.} and Wells, {A. A.} and L. Angelini and N. Gehrels",

year = "2006",

month = may,

day = "19",

doi = "10.1063/1.2207928",

language = "English (US)",

isbn = "0735403260",

series = "AIP Conference Proceedings",

pages = "408--413",

booktitle = "GAMMA-RAY BURSTS IN THE SWIFT ERA",

note = "GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference ; Conference date: 29-11-2005 Through 02-12-2005",

}

Campana, S, Romano, P, Covino, S, Lazzati, D, De Luca, A, Chincarini, G, Moretti, A, Tagliaferri, G, Cusumano, G, Mangano, V, La Parola, V, Mineo, T, Giommi, P, Perri, M, Capalbi, M, Antonelli, LA, Burrows, DN, Hill, JE, Racusin, JL, Kennea, JA, Morris, DC, Pagani, C, Nousek, JA, Osborne, JP, Goad, MR, Page, KL, Beardmore, AP, Godet, O, O'Brien, PT, Wells, AA, Angelini, L & Gehrels, N 2006, Evidence for intrinsic absorption in the Swift X-ray afterglows. in GAMMA-RAY BURSTS IN THE SWIFT ERA: Sixteenth Maryland Astrophysics Conference. AIP Conference Proceedings, vol. 836, pp. 408-413, GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference, Washington, D.C., United States, 11/29/05. https://doi.org/10.1063/1.2207928

TY - GEN

T1 - Evidence for intrinsic absorption in the Swift X-ray afterglows

AU - Campana, S.

AU - Romano, P.

AU - Covino, S.

AU - Lazzati, D.

AU - De Luca, A.

AU - Chincarini, G.

AU - Moretti, A.

AU - Tagliaferri, G.

AU - Cusumano, G.

AU - Mangano, V.

AU - La Parola, V.

AU - Mineo, T.

AU - Giommi, P.

AU - Perri, M.

AU - Capalbi, M.

AU - Antonelli, L. A.

AU - Burrows, D. N.

AU - Hill, J. E.

AU - Racusin, J. L.

AU - Kennea, J. A.

AU - Morris, D. C.

AU - Pagani, C.

AU - Nousek, J. A.

AU - Osborne, J. P.

AU - Goad, M. R.

AU - Page, K. L.

AU - Beardmore, A. P.

AU - Godet, O.

AU - O'Brien, P. T.

AU - Wells, A. A.

AU - Angelini, L.

AU - Gehrels, N.

PY - 2006/5/19

Y1 - 2006/5/19

N2 - Gamma-ray burst (GRB) progenitors are observationally linked to the death of massive stars. X-ray studies of the GRB afterglows can deepen our knowledge of the ionization status and metal abundances of the matter in the GRB environment. Moreover, the presence of local matter can be inferred through its fingerprints in the X-ray spectrum, i.e. the presence of absorption higher than the Galactic value. A few studies based on BeppoSAX and XMM-Newton found evidence of higher than Galactic values for the column density in a number of GRB afterglows. Here we report on a systematic analysis of 17 GRBs observed by Swift up to April 15, 2005. We observed a large number of GRBs with an excess of column density. Our sample, together with previous determinations of the intrinsic column densities for GRBs with known redshift, provides evidence for a distribution of absorption consistent with that predicted for randomly occurring GRB within molecular clouds.

AB - Gamma-ray burst (GRB) progenitors are observationally linked to the death of massive stars. X-ray studies of the GRB afterglows can deepen our knowledge of the ionization status and metal abundances of the matter in the GRB environment. Moreover, the presence of local matter can be inferred through its fingerprints in the X-ray spectrum, i.e. the presence of absorption higher than the Galactic value. A few studies based on BeppoSAX and XMM-Newton found evidence of higher than Galactic values for the column density in a number of GRB afterglows. Here we report on a systematic analysis of 17 GRBs observed by Swift up to April 15, 2005. We observed a large number of GRBs with an excess of column density. Our sample, together with previous determinations of the intrinsic column densities for GRBs with known redshift, provides evidence for a distribution of absorption consistent with that predicted for randomly occurring GRB within molecular clouds.

UR - http://www.scopus.com/inward/record.url?scp=33845577725&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33845577725&partnerID=8YFLogxK

U2 - 10.1063/1.2207928

DO - 10.1063/1.2207928

M3 - Conference contribution

AN - SCOPUS:33845577725

SN - 0735403260

SN - 9780735403260

T3 - AIP Conference Proceedings

SP - 408

EP - 413

BT - GAMMA-RAY BURSTS IN THE SWIFT ERA

T2 - GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference

Y2 - 29 November 2005 through 2 December 2005

ER -

Evidence for intrinsic absorption in the Swift X-ray afterglows

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